Table of Contents

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PREFACE
This Service Manual describes the
technical features and servicing
procedures for the KYMCO B&W 50.
Section 1 contains the precautions for
all operations stated in this manual.
Read them carefully before any
operation is started.
Section 2 is the removal/installation
procedures for the frame covers which
are subject to higher removal/installation
frequency during maintenance and
servicing operations.
Section 3 describes the inspection/
adjustment procedures, safety rules and
service information for each part, starting
from periodic maintenance.
Sections 5 through 12 give instructions
for disassembly, assembly and adjustment
of engine parts. Section 13 is the
removal/ installation of chassis. Section
15 states the testing and measuring
methods of electrical equipment.
Most sections start with an assembly or
system illustration and troubleshooting
for the section. The subsequent pages
give detailed procedures for the section.
°Ø
The information and contents included in
this manual may be different from the
motorcycle in case specifications are
changed.
KWANG YANG MOTOR CO., LTD.
OVERSEAS SALES DEPARTMENT
OVERSEAS SERVICE SECTION
www.PlanDeGraissage.org
BET & WIN 50

TABLE OF CONTENTS

SHOCK ABSORBER/FRONT FORK
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Summary of Contents for KYMCO BET & WIN 50

  • Page 1: Table Of Contents

    TABLE OF CONTENTS GENERAL INFORMATION This Service Manual describes the technical features and servicing EXHAUST MUFFLER/FRAME COVERS procedures for the KYMCO B&W 50. INSPECTION/ADJUSTMENT LUBRICATION SYSTEM Section 1 contains the precautions for all operations stated in this manual. ENGINE REMOVAL/INSTALLATION...
  • Page 2: General Information

    . GENERAL INFORMATION BET & WIN 50 __________________________________________________________________________________ __________________________________________________________________________________ __________________________________________________________________________________ __________________________________________________________________________________ __________________________________________________________________________________ GENERAL INFORMATION __________________________________________________________________________________ ENGINE SERIAL NUMBER------------------------------------------- 1- 1 SPECIFICATIONS ------------------------------------------------------ 1- 2 SERVICE PRECAUTIONS--------------------------------------------- 1- 3 TORQUE VALUES ----------------------------------------------------- 1-13 SPECIAL TOOLS ------------------------------------------------------- 1-14 LUBRICATION POINTS----------------------------------------------- 1-15 WIRING DIAGRAM ---------------------------------------------------- 1-21 TROUBLESHOOTING ------------------------------------------------- 1-22 www.PlanDeGraissage.org...
  • Page 3: Engine Serial Number

    . GENERAL INFORMATION BET & WIN 50 ENGINE SERIAL NUMBER Vehicle Identification Serial Number Location of Engine Serial Number Location of Frame Serial Number www.PlanDeGraissage.org...
  • Page 4: General Information

    . GENERAL INFORMATION BET & WIN 50 Cooling Type Water cooling SPECIFICATIONS Name & Model No. B&W50 Overall length 1940mm Overall width 740mm Overall height 1173mm Air cleaner type & No Sponge wet Wheel base 1352mm Gear oil capacity 0.12 liters Engine type 2-stroke Water cooled...
  • Page 5: Service Precautions

     When tightening bolts or nuts, begin with larger-diameter to smaller ones at several times, and tighten to the specified torque diagonally.  Use genuine parts and lubricants. KYMCO KYMCO KYMCO  When servicing the motorcycle, be sure to use special tools for removal and installation.
  • Page 6  After reassembly, check all parts for proper tightening and operation.  When two persons work together, pay attention to the mutual working safety. KYMCO  Disconnect the battery negative (-) terminal before operation.  When using a spanner or other tools, make sure not to damage the motorcycle surface.
  • Page 7 . GENERAL INFORMATION BET & WIN 50  If the fuse is burned out, find the cause Confirm and repair it. Replace it with a new one Capacity according to the specified capacity.  After operation, terminal caps shall be installed securely.
  • Page 8 . GENERAL INFORMATION BET & WIN 50 Tighten the bands so that only the insulated surfaces contact the wire harnesses.  The connector shall be inserted completely. Snapping!  If the double connector has a lock, lock it at the correct position. ...
  • Page 9 . GENERAL INFORMATION BET & WIN 50 projected ends of bolts and screws.  After clamping, check each wire to make sure it is secure.  Do not squeeze wires against the weld or its clamp.  After clamping, check each harness to make sure that it is not interfering with any moving or sliding parts.
  • Page 10 . GENERAL INFORMATION BET & WIN 50  Route harnesses so they are neither pulled tight nor have excessive slack. Do not pull too tight!  Protect wires and harnesses with electrical tape or tube if they contact a sharp edge or corner. ...
  • Page 11 . GENERAL INFORMATION BET & WIN 50  After routing, check that the wire harnesses are not twisted or kinked.  Wire harnesses routed along with handlebar should not be pulled tight, have excessive slack or interfere with adjacent or surrounding parts in all steering positions.
  • Page 12 . GENERAL INFORMATION BET & WIN 50  Symbols: The following symbols represent the servicing methods and cautions included in this service manual. : Apply engine oil to the specified points. (Use designated engine oil for Engine Oil lubrication.) : Apply grease for Grease lubrication.
  • Page 13 . GENERAL INFORMATION BET & WIN 50 SERVICE INFORMATION ENGINE Standard (mm) Service Limit (mm) Item B&W50 B&W50 Cylinder head warpage 0.10  Piston O.D.(5mm from bottom of piston 38.955 38.970 38.90 skirt) Cylinder-to- piston clearance 0.10 Piston pin hole I.D. 12.002 12.008 12.03...
  • Page 14 . GENERAL INFORMATION BET & WIN 50 Throttle grip free play 2_ 6mm Jet needle clip notch notch FRAME Standard (mm) Service Limit (mm) Item B&W50 B&W50 Axle shaft runout  Radial Front wheel rim runout Axial Front shock absorber spring free length 221.5 204.3 Rear wheel rim runout...
  • Page 15: Torque Values

    . GENERAL INFORMATION BET & WIN 50 TORQUE VALUES ENGINE Item Thread dia. (mm) Torque (N-m) Remarks Cylinder head bolt BF7x115 14.7_ 16.7 (cold) Clutch drive plate nut 34.3_ 39.2 Clutch outer nut NH10 34.3_ 44.1 Drive face nut NH12 49.0_ 58.8 Oil check bolt 9.8_ 14.7...
  • Page 16: Special Tools

    . GENERAL INFORMATION BET & WIN 50 5mm bolt, nut 4.4_ 5.9 5mm screw 3.43_ 4.9 6mm bolt, nut 7.8_ 11.8 6mm screw, SH bolt 6.86_ 10.8 8mm bolt, nut 17.6_ 24.5 6mm flange bolt, nut 9.8_ 13.7 10mm bolt, nut 29.4_ 39.2 8mm flange bolt, nut 23.5_ 29.4...
  • Page 17: Lubrication Points

    . GENERAL INFORMATION BET & WIN 50 LUBRICATION POINTS ENGINE Lubrication Points Lubricant Remarks Crankcase sliding & movable parts JASO-FC or API-TC Cylinder movable parts Transmission gear (final gear) SAE-90# Kick starter spindle bushing Grease Drive pulley movable parts Grease Starter pinion movable parts Grease FRAME...
  • Page 18 . GENERAL INFORMATION BET & WIN 50 Grease Engine Oil Main Stand Pivot Rear Brake Control Cable Brake Master Cylinders Rear Stop Switch Front Stop Switch Speedometer Cable Throttle Cable Reserve Cap Water Hose Radiator Horn 1-16 www.PlanDeGraissage.org...
  • Page 19 . GENERAL INFORMATION BET & WIN 50 Ignition Switch Water Hose Resistors Front Brake Fluid Tube Fuse Tank 1-17 www.PlanDeGraissage.org...
  • Page 20 . GENERAL INFORMATION BET & WIN 50 Regulator/ Rectifier Reserve Cap Water Hose Speedometer Rear Brake Cable Control Cable 1-18 www.PlanDeGraissage.org...
  • Page 21 . GENERAL INFORMATION BET & WIN 50 Oil Meter Fuel Pump Fuel Pump Vacuum Tube Fuel Filter Fuel Tank Breather Tube Ignition Coil Thermostat 1-19 www.PlanDeGraissage.org...
  • Page 22 . GENERAL INFORMATION BET & WIN 50 Throttle Cable Water Hose Oil Tube Spark Plug Cap 1-20 www.PlanDeGraissage.org...
  • Page 23: Wiring Diagram

    . GENERAL INFORMATION BET & WIN 50 WIRING DIAGRAM 1-21 www.PlanDeGraissage.org...
  • Page 24: Troubleshooting

    . GENERAL INFORMATION BET & WIN 50 TROUBLESHOOTING ENGINE WILL NOT START OR IS HARD TO START Inspection/Adjustment Probable Cause Symptom Check if fuel reaches carburetor by loosening drain screw.  Empty fuel tank  Clogged float valve Fuel reaches Fuel does not ...
  • Page 25 Wait for 30 minutes . GENERAL INFORMATION BET & WIN 50 and then remove the carbu-retor auto choke circuit hose and blow the hose with mouth. Not clogged Clogged  Faulty auto bystarter ENGINE STOPS IMMEDIATELY AFTER IT STARTS Inspection/Adjustment Symptom Probable Cause Check if fuel reaches...
  • Page 26 . GENERAL INFORMATION BET & WIN 50  Faulty CDI unit or A.C. Correct timing Incorrect timing generator  A.C.G. flywheel not aligned Check carburetor air screw adjustment.  Mixture too rich (turn Correctly adjusted Incorrectly adjusted screw out)  Mixture too lean (turn screw in) Inspection/Adjustment...
  • Page 27 . GENERAL INFORMATION BET & WIN 50 ENGINE LACKS POWER Inspection/Adjustment Symptom Probable Cause Start engine and accelerate lightly for observation.  Clogged air cleaner Engine speed does  Clogged fuel filter Engine speed not increase  Clogged exhaust increases sufficiently muffler ...
  • Page 28 . GENERAL INFORMATION BET & WIN 50  Mixture too lean  Poor quality fuel Engine does not Engine overheats  Excessive carbon build- overheats up in combustion chamber  Ignition timing too early Rapidly accelerate or run at high speed ...
  • Page 29 . GENERAL INFORMATION BET & WIN 50  Broken auto bystarter Not clogged Clogged wire  Faulty auto bystarter Connect auto bystarter wire to battery. Wait for 5 minutes, then connect a hose to fuel enriching circuit and then blow the hose with mouth.
  • Page 30 . GENERAL INFORMATION BET & WIN 50  Clogged Not clogged Faulty auto bystarter CLUTCH, DRIVE AND DRIVEN PULLEYS Symptom Probable Cause  Worn or slipping drive belt  Broken ramp plate  Broken driven face spring Engine starts but ...
  • Page 31 . GENERAL INFORMATION BET & WIN 50  Oil or grease fouled drive belt There is abnormal  Worn drive belt noise  Weak driven face spring or smell while running  Worn or seized driven pulley bearings STEERING HANDLEBAR DOES NOT TRACK STRAIGHT Symptom Probable Cause (Front and rear tire pressures are normal)
  • Page 32 . GENERAL INFORMATION BET & WIN 50  Worn brake linings Index mark on brake  Worn brake cam contacting area panel aligns with wear indicator arrow brake shoes  Worn brake cam  Worn brake drum  Worn brake linings Brake squeaks ...
  • Page 33 . GENERAL INFORMATION BET & WIN 50  Broken or shorted wire Float up = Light off Float down = Light on meter 2. Motor oil is sufficient but the indicator light remains on (Ignition switch ON) Inspection/Adjustment Symptom Probable Cause Check connectors for proper connection.
  • Page 34 . GENERAL INFORMATION BET & WIN 50  Incorrectly connected connector  Broken or shorted wire in fuel gauge 2. Pointer fluctuates or swings (Ignition switch ON) Inspection/Adjustment Symptom Probable Cause Check battery circuit by operating turn signals and horn. ...
  • Page 35 . GENERAL INFORMATION BET & WIN 50  Faulty starter motor  Faulty wire harness 2. Starter motor turns slowly or idles Symptom Probable Cause Inspection/Adjustmen Check battery circuit by operating turn signals. Signals operate Signals dim, remain  Weak or dead battery properly on or don‘t operate...
  • Page 36 . EXHAUST MUFFLER/FRAME COVERS BET & WIN 50 __________________________________________________________________________________ __________________________________________________________________________________ __________________________________________________________________________________ __________________________________________________________________________________ __________________________________________________________________________________ EXHAUST MUFFLER/FRAME COVERS __________________________________________________________________________________ SERVICE INFORMATION -------------------------------------------- 2- 1 TROUBLESHOOTING ------------------------------------------------- 2- 1 FRAME COVERS REMOVAL----------------------------------------- 2- 2 EXHAUST MUFFLER REMOVAL ----------------------------------- 2- 6 www.PlanDeGraissage.org...
  • Page 37: Service Information

    . EXHAUST MUFFLER/FRAME COVERS BET & WIN 50 SERVICE INFORMATION GENERAL INSTRUCTIONS • When removing frame covers, don’t pull them by force because the cover joint claws may be damaged. • Make sure to route cables and harnesses according to the Cable & Harness Routing. TORQUE VALUES Exhaust muffler lock bolt 34.3N-m...
  • Page 38: Exhaust Muffler/Frame Covers

    . EXHAUST MUFFLER/FRAME COVERS BET & WIN 50 FRAME COVERS REMOVAL REAR CARRIER & HAND RAIL Bolts/Nuts REMOVAL Remove the met-in box: First remove the two bolts and two nuts attaching the met-in box. Remove the battery, CDI and fuse. Remove the met-in box.
  • Page 39 . EXHAUST MUFFLER/FRAME COVERS BET & WIN 50 Screws Remove the right and left screws on the rear part of the frame body cover. Disconnect the seat lock wire. Remove the frame body cover. Screw Side Cover Remove the midst screw attaching the right and left side covers.
  • Page 40 . EXHAUST MUFFLER/FRAME COVERS BET & WIN 50 Screws FLOOR BOARD REMOVAL Nuts Bolts Remove the floor mat. Remove the center cover. (  2-3) Remove the ten screws and four screws attaching the front right and left side covers. Remove the two bottom cover adjusting screws.
  • Page 41 . EXHAUST MUFFLER/FRAME COVERS BET & WIN 50 Key Moldings BACK COVER REMOVAL Remove the front cover. Remove the key moldings. Remove the fuel cap moldings. Remove the back cover bolt. Bolts Fuel Cap Moldings Remove the screws attaching fuel tank inlet tube join.
  • Page 42: Exhaust Muffler Removal

    . EXHAUST MUFFLER/FRAME COVERS BET & WIN 50 Screws Bolts BOTTOM COVER REMOVAL Remove the side stand. Remove the four bolts attaching the bottom cover. Remove the bottom cover. Bottom Cover Side Stand Bolts FRONT FENDER REMOVAL Remove the two bolts attaching the fender. Remove the front fender cover.
  • Page 43 . EXHAUST MUFFLER/FRAME COVERS BET & WIN 50 www.PlanDeGraissage.org...
  • Page 44 . INSPECTION/ADJUSTMENT BET & WIN 50 __________________________________________________________________________________ __________________________________________________________________________________ __________________________________________________________________________________ __________________________________________________________________________________ __________________________________________________________________________________ INSPECTION/ADJUSTMENT __________________________________________________________________________________ SERVICE INFORMATION -------------------------------------------- 3- 1 INSPECTION AND MAINTENANCE SCHEDULE ---------------- 3- 2 FUEL LINE/FUEL FILTER ------------------------------------------- 3- 5 THROTTLE OPERATION --------------------------------------------- 3- 5 AIR CLEANER ---------------------------------------------------------- 3- 6 SPARK PLUG ----------------------------------------------------------- 3- 7 IGNITION TIMING----------------------------------------------------- 3- 7 CYLINDER COMPRESSION ------------------------------------------ 3- 8...
  • Page 45: Inspection/Adjustment

    . INSPECTION/ADJUSTMENT BET & WIN 50 SERVICE INFORMATION GENERAL °I WARNING •Before running the engine, make sure that the working area is well-ventilated. Never run the engine in a closed area. The exhaust contains poisonous carbon monoxide gas which may cause death to people. •Gasoline is extremely flammable and is explosive under some conditions.
  • Page 46: Inspection And Maintenance Schedule

    . INSPECTION/ADJUSTMENT BET & WIN 50 INSPECTION AND MAINTENANCE SCHEDULE (Note) 1. °≥ means time for inspection. 2. °∏ means regular replacement for the specified parts. This inspection and maintenance schedule is based upon average riding conditions. Machines subjected to serve use, or ridden in unusually dusty areas, require more frequent servicing.
  • Page 47 . INSPECTION/ADJUSTMENT BET & WIN 50 Frequency Inspection & Maintenance Item Judgment Standards Remarks Every 6 Every 12 Preride month months months Tire crack and damage °≥ °≥ °≥ Groove Depth: Tire groove and Front: 0.8mm °≥ °≥ °≥ abnormal wear Rear : 0.8mm Imbedded objects, °≥...
  • Page 48 . INSPECTION/ADJUSTMENT BET & WIN 50 Loose connection and Wires °≥ damage Frequency Inspection & Maintenance Item Judgment Standards Remarks Every 6 Every 12 Preride month months months Performance and abnormal °≥ °≥ noise Conditions at low and high °≥ °≥...
  • Page 49: Fuel Line/Fuel Filter

    . INSPECTION/ADJUSTMENT BET & WIN 50 Remove carbon deposits on combustion chamber, °≥ breather hole and exhaust muffler FUEL LINE/FUEL FILTER Remove the center cover. Check the fuel lines and replace any parts which show signs of deterioration, damage or leakage.
  • Page 50: Air Cleaner

    . INSPECTION/ADJUSTMENT BET & WIN 50 CHANGE INTERVAL More frequent replacement is required when riding in unusually dusty or rainy areas. °Ø The air cleaner element has a • viscous type paper element. Do not clean it with compressed air. Be sure to install the air cleaner •...
  • Page 51: Spark Plug

    . INSPECTION/ADJUSTMENT BET & WIN 50 Remove the two timing cap bolts and the timing cap. SPARK PLUG Remove the frame center cover. Remove the spark plug cap and spark plug. Check the spark plug for wear and fouling deposits. Clean any fouling deposits with a spark plug cleaner or a wire brush.
  • Page 52: Cylinder Compression

    . INSPECTION/ADJUSTMENT BET & WIN 50 “F” Mark Check the ignition timing with a timing light. When the engine is running at the specified idle speed, the ignition timing is correct if the “F” mark on the flywheel aligns with the index mark on the crankcase cover.
  • Page 53: Final Reduction Gear Oil

    . INSPECTION/ADJUSTMENT BET & WIN 50 Maintenance Schedule. Oil Check Bolt Hole/Oil Filler FINAL REDUCTION GEAR OIL °Ø • Place the motorcycle on its main stand on level ground. Stop the engine and remove the oil check bolt. The oil level shall be at the oil check bolt hole. If the oil level is low, add the recommended oil SAE90# to the proper level.
  • Page 54: Headlight Aim

    . INSPECTION/ADJUSTMENT BET & WIN 50 and tilt the motorcycle to the right and the coolant will drain more easily. Drain the coolant in the reserve tank. Reinstall the drain hoses. Fill the radiator with the specified coolant. °Ø • The coolant freezing point should be 5¢J lower than the temperature of the riding area.
  • Page 55: Brake System

    . INSPECTION/ADJUSTMENT BET & WIN 50 Radiator Tank Start the engine and check if there is no bubbles in the coolant and the coolant level is stable. Reinstall the radiator cap. If there are bubbles in the coolant, bleed air from the system.
  • Page 56 . INSPECTION/ADJUSTMENT BET & WIN 50 °m Brake Drum Wear/Damage°n Check the brake drum appearance for damage. Check if the brake lining wear is within the specified service limit. Check the brake operation for abnormal noise and brake drum inside for wear or damage. Adjusting Nuts Front Brake BRAKE FLUID...
  • Page 57: Nuts/Bolts/Fasteners

    . INSPECTION/ADJUSTMENT BET & WIN 50 oil leaks, looseness or damage. Jack the rear wheel off the ground and move the rear wheel sideways with force to see if the engine hanger bushings are worn. Replace the engine hanger bushings if there is any looseness.
  • Page 58 . INSPECTION/ADJUSTMENT BET & WIN 50 If the oil pump is not synchronized properly, the following will occur: • Excessive white smoke or hard starting due to pump control lever excessively open •Seized piston due to pump control lever insufficiently open LUBRICATION SYSTEM °m Oil Filter Cleaning°n Disconnect the oil tube at the oil pump side...
  • Page 59 . INSPECTION/ADJUSTMENT BET & WIN 50 Adjusting Nut Pump Body Index Mark 3-15 www.PlanDeGraissage.org...
  • Page 60: Lubrication System

    . LUBRICATION SYSTEM BET & WIN 50 __________________________________________________________________________________ __________________________________________________________________________________ __________________________________________________________________________________ __________________________________________________________________________________ __________________________________________________________________________________ LUBRICATION SYSTEM __________________________________________________________________________________ SERVICE INFORMATION............4-1 TROUBLESHOOTING.............. 4-1 OIL PUMP REMOVAL ............. 4-2 OIL PUMP INSPECTION............4-2 OIL PUMP INSTALLATION.............4-3 OIL PUMP BLEEDING............. 4-4 OIL TANK ................4-5 www.PlanDeGraissage.org...
  • Page 61: Service Information

    . LUBRICATION SYSTEM BET & WIN 50 SERVICE INFORMATION GENERAL INSTRUCTIONS • Use care when removing and installing the oil pump not to allow dust and dirt to enter the engine and oil line. • Do not attempt to disassemble the oil pump. •...
  • Page 62: Oil Pump Removal

    . LUBRICATION SYSTEM BET & WIN 50 Oil Pump Control Cable OIL PUMP REMOVAL °Ø Do not allow foreign matters to enter the crankcase. Before removing the oil pump, clean the oil pump and crankcase surfaces. Remove the met-in box. (  2-2) Oil Inlet Line Oil Outlet Line Disconnect the oil pump control cable from...
  • Page 63: Lubrication System

    . LUBRICATION SYSTEM BET & WIN 50 OIL PUMP INSTALLATION °Ø • Lubricate the O-ring with grease or engine oil before installation. • Make sure that the oil pump is inserted into the crankcase. • Apply molybdenum disulfide or grease to the pump pinion.
  • Page 64: Oil Pump Bleeding

    . LUBRICATION SYSTEM BET & WIN 50 OIL PUMP BLEEDING Oil Pump Oil Outlet Line °Ø • Air in the oil lines will block oil flow and result in severe engine damage. • Bleed air from the oil lines and oil pump whenever the oil lines or pump have been removed or there is air in the oil lines.
  • Page 65: Oil Tank

    . LUBRICATION SYSTEM BET & WIN 50 Oil Meter OIL TANK OIL TANK REMOVAL Remove the seat and met-in box. (  2-2) Remove the battery. Remove the battery cover screw and the battery cover. Remove the oil meter connector. Remove the two bolts attaching the oil tank.
  • Page 66 . ENGINE REMOVAL/INSTALLATION BET & WIN 50 __________________________________________________________________________________ __________________________________________________________________________________ __________________________________________________________________________________ __________________________________________________________________________________ __________________________________________________________________________________ ENGINE REMOVAL/INSTALLATION __________________________________________________________________________________ SERVICE INFORMATION............5-1 ENGINE REMOVAL..............5-2 ENGINE INSTALLATION............5-4 www.PlanDeGraissage.org...
  • Page 67 . ENGINE REMOVAL/INSTALLATION BET & WIN 50 SERVICE INFORMATION GENERAL INSTRUCTIONS • Parts requiring engine removal for servicing: Crankcase Crankshaft TORQUE VALUES Engine mounting bolt 44.1_ 53.9N-m Engine hanger bracket bolt 44.1_ 53.9N-m Rear shock absorber lower mount bolt 23.5_ 29.4N-m Rear shock absorber upper mount bolt 34.3_ 44.1N-m www.PlanDeGraissage.org...
  • Page 68: Engine Removal/Installation

    . ENGINE REMOVAL/INSTALLATION BET & WIN 50 Air Cleaner Case Band ENGINE REMOVAL Remove the frame body cover. (  2-2) Remove the two bolts attaching the air cleaner case. Loosen the band between the air cleaner and carburetor to remove the air cleaner case. Remove the carburetor cap.
  • Page 69 . ENGINE REMOVAL/INSTALLATION BET & WIN 50 Rear Brake Cable Remove the rear brake adjusting nut and disconnect the brake cable from the crankcase. Remove the rear brake cable clamp and rear brake cable. Remove the cooling tube band on the left crankcase cover and disconnect the cooling tube.
  • Page 70 . ENGINE REMOVAL/INSTALLATION BET & WIN 50 ENGINE HANGER BRACKET INSPECTION Inspect the stopper rubbers and bushings for damage and replace with new ones if necessary. Bushings Stopper Rubbers ENGINE INSTALLATION Install the engine in the reverse order of removal. °Ø...
  • Page 71 . CYLINDER HEAD/CYLINDER/PISTON BET & WIN 50 __________________________________________________________________________________ __________________________________________________________________________________ __________________________________________________________________________________ __________________________________________________________________________________ __________________________________________________________________________________ CYLINDER HEAD/CYLINDER/PISTON __________________________________________________________________________________ SERVICE INFORMATION............6-1 TROUBLESHOOTING.............. 6-1 CYLINDER HEAD..............6-2 CYLINDER/PISTON..............6-4 www.PlanDeGraissage.org...
  • Page 72: Cylinder Head/Cylinder/Piston

    . CYLINDER HEAD/CYLINDER/PISTON BET & WIN 50 SERVICE INFORMATION GENERAL INSTRUCTIONS • The cylinder head, cylinder and piston can be serviced with the engine installed in the frame. • Before disassembly, clean the engine to prevent dust from entering the engine. •...
  • Page 73: Cylinder Head

    . CYLINDER HEAD/CYLINDER/PISTON BET & WIN 50 Spark Plug Cap CYLINDER HEAD REMOVAL Remove the rear carrier. Remove the frame body cover. (  2-2) Drain the coolant. Disconnect the thermosensor wire from the thermosensor. Disconnect the water hose from the thermostat housing.
  • Page 74 . CYLINDER HEAD/CYLINDER/PISTON BET & WIN 50 COMBUSTION CHAMBER Combustion Chamber DECABONIZING Remove the carbon deposits from the combustion chamber °Ø Avoid damaging the combustion chamber wall and cylinder mating surface. Mating Surface CYLINDER HEAD INSPECTION Check the cylinder head for warpage with a straight edge and feeler gauge.
  • Page 75: Cylinder/Piston

    . CYLINDER HEAD/CYLINDER/PISTON BET & WIN 50 Cylinder head Bolts Cylinder Head Bolts Installation Install and tighten the cylinder head bolts diagonally in 2 or 3 times. Torque: 14.7_ 16.66N-m Install the spark plug. Torque: 10.78_ 16.66N-m Spark Plug Cylinder Head CYLINDER/PISTON CYLINDER REMOVAL Remove the met-in box and seat.
  • Page 76 . CYLINDER HEAD/CYLINDER/PISTON BET & WIN 50 Spread each piston ring and remove by lifting it up at a point just opposite the gap. Remove the expander. CYLINDER/PISTON INSPECTION Check the cylinder and piston for wear or damage. Clean carbon deposits from the exhaust port area.
  • Page 77 . CYLINDER HEAD/CYLINDER/PISTON BET & WIN 50 Inspect the top of the cylinder for warpage. Service Limit: 0.10mm replace if over °Ø The cylinder has an A mark or no mark on it. When replacing the cylinder with a new one, use a cylinder having the same mark as the old one.
  • Page 78 . CYLINDER HEAD/CYLINDER/PISTON BET & WIN 50 Measure the piston pin hole I.D. Service Limit: 12.03mm replace if over Measure the piston pin O.D. Service Limit: 11.98mm replace if below Measure the piston-to-piston pin clearance. Service Limit: 0.03mm replace if over Feeler Gauge Piston Ring PISTON RING INSPECTION...
  • Page 79 . CYLINDER HEAD/CYLINDER/PISTON BET & WIN 50 Install the frame covers. PISTON/CYLINDER INSTALLATION First install the expander in the second ring Piston groove. Top Ring (1st Ring) Then install the top and second rings in their respective ring grooves. The piston rings should be pressed into the grooves with even force.
  • Page 80 . CYLINDER HEAD/CYLINDER/PISTON BET & WIN 50 www.PlanDeGraissage.org...
  • Page 81: Kick Starter/Drive Pulley/ Clutch/Driven Pulley

    . KICK STARTER/DRIVE PULLEY/ CLUTCH/DRIVEN PULLEY BET & WIN 50 __________________________________________________________________________________ __________________________________________________________________________________ __________________________________________________________________________________ __________________________________________________________________________________ __________________________________________________________________________________ KICK STARTER/DRIVE PULLEY/ CLUTCH/DRIVEN PULLEY __________________________________________________________________________________ SERVICE INFORMATION............7- 1 TROUBLESHOOTING.............. 7- 1 KICK STARTER............... 7- 2 DRIVE BELT ................7- 6 DRIVE PULLEY............... 7- 8 STARTER PINION ..............
  • Page 82 . KICK STARTER/DRIVE PULLEY/ CLUTCH/DRIVEN PULLEY Bet & Win 50 SERVICE INFORMATION GENERAL INSTRUCTIONS • Avoid getting grease and oil on the drive belt and pulley faces. SPECIFICATIONS Standard (mm) Service Limit (mm) B&W50 Item B&W50 SF10DA Drive pulley collar O.D. 20.01 20.025 19.97...
  • Page 83 . KICK STARTER/DRIVE PULLEY/ CLUTCH/DRIVEN PULLEY BET & WIN 50 Left Crankcase Cover KICK STARTER LEFT CRANKCAS E COVER REMOVAL Remove the drive belt cooling air tube connector circlip. Remove the nine left crankcase cover bolts, left crankcase cover and dowel pins. Inspect the left crankcase cover seal rubber for damage or deterioration.
  • Page 84 . KICK STARTER/DRIVE PULLEY/ CLUTCH/DRIVEN PULLEY Bet & Win 50 Remove the kick starter spindle and return Kick Starter Spindle spring from the left crankcase cover. Remove the kick starter spindle bushing. Return Spring KICK STARTER SPINDLE INSPECTION Spindle Return Spring Inspect the kick starter spindle and gear for wear or damage.
  • Page 85 . KICK STARTER/DRIVE PULLEY/ CLUTCH/DRIVEN PULLEY BET & WIN 50 Inspect the kick starter spindle and driven Kick Starter Spindle Forcing Part gear forcing parts for wear or damage. Kick Starter Driven Gear Forcing Part KICK STARTER INSTALLATION Install the kick starter spindle bushing and return spring onto the left crankcase cover.
  • Page 86 . KICK STARTER/DRIVE PULLEY/ CLUTCH/DRIVEN PULLEY Bet & Win 50 First install the washer and then the circlip onto the kick starter spindle. Install the kick lever. Circlip Washer Dowel Pins LEFT CRANKCASE COVER INSTALLATION First install the dowel pins and then the seal rubber.
  • Page 87 . KICK STARTER/DRIVE PULLEY/ CLUTCH/DRIVEN PULLEY BET & WIN 50 DRIVE BELT Remove the left crankcase cover. INSPECTION Check the drive belt for cracks, separation or abnormal or excessive wear. Measure the drive belt width. Service Limit: SH10CA: 17mm replace if below °Ø...
  • Page 88 . KICK STARTER/DRIVE PULLEY/ CLUTCH/DRIVEN PULLEY Bet & Win 50 Clutch/Driven Pulley Remove the drive belt from the clutch/ driven pulley. DRIVE BELT INSTALLATION Drive Belt Turn the driven pulley clockwise and lift it up to expand the drive belt groove and then install a new drive belt.
  • Page 89 . KICK STARTER/DRIVE PULLEY/ CLUTCH/DRIVEN PULLEY BET & WIN 50 DRIVE PULLEY Drive Pulley Face Starting Ratchet REMOVAL Hold the drive pulley with the holder and remove the 17mm drive face nut. Remove the starting ratchet, 17mm washer and drive pulley face. 17mm Drive Face Nut Movable Drive Face MOVABLE DRIVE FACE...
  • Page 90 . KICK STARTER/DRIVE PULLEY/ CLUTCH/DRIVEN PULLEY Bet & Win 50 Remove the weight rollers. Weight Roller MOVABLE DRIVE FACE INSPECTION Check each weight roller for wear or damage. Measure each roller O.D. Service Limit: 12.4mm replace if below Movable Drive Face DRIVE PULLEY INSTALLATION Install the drive pulley collar and movable drive face onto the crankshaft.
  • Page 91 . KICK STARTER/DRIVE PULLEY/ CLUTCH/DRIVEN PULLEY BET & WIN 50 Install the drive belt on the crankshaft. Drive Pulley Face Install the drive face, starting ratchet and washer, then tighten the 17mm drive face nut. Torque: 34.3_ 39.2N-m °Ø Keep grease or oil off the drive belt and drive pulley faces.
  • Page 92 . KICK STARTER/DRIVE PULLEY/ CLUTCH/DRIVEN PULLEY Bet & Win 50 CLUTCH/DRIVEN PULLEY Clutch Outer 14mm Clutch Outer Nut CLUTCH/DRIVEN PULLEY REMOVAL Remove the drive pulley. (  7-6) Hold the clutch outer with the universal holder and remove the 14mm clutch outer nut.
  • Page 93 . KICK STARTER/DRIVE PULLEY/ CLUTCH/DRIVEN PULLEY BET & WIN 50 Remove the seal collar. Seal Collar Driven Pulley Oil Seal Pull out the guide roller pins from the driven pulley and then remove the O-rings and oil seal from the driven pulley. O-rings Guide Roller Pin CLUTCH/DRIVEN PULLEY...
  • Page 94 . KICK STARTER/DRIVE PULLEY/ CLUTCH/DRIVEN PULLEY Bet & Win 50 Check the clutch shoes for wear or damage. Measure the clutch lining thickness. Service Limit: 2.0mm replace if below Measure the driven face spring free length. Service Limit: 82.6mm replace if below Check the driven face assembly for wear or damage.
  • Page 95 . KICK STARTER/DRIVE PULLEY/ CLUTCH/DRIVEN PULLEY BET & WIN 50 DRIVEN PULLEY FACE BEARING Inner Bearing REPLACEMENT Check the needle bearings in the driven face and replace them if they have excessive play, damage or abnormal noise. Drive the inner bearing out of the driven pulley face.
  • Page 96 . KICK STARTER/DRIVE PULLEY/ CLUTCH/DRIVEN PULLEY Bet & Win 50 Bearing Driver Pilot Drive in a new needle bearing into the driven face with the mark facing up. Outer Driver Driven Pulley Oil Seal CLUTCH/DRIVEN PULLEY AS SEMBLY First install the movable driven face onto the driven face.
  • Page 97 . KICK STARTER/DRIVE PULLEY/ CLUTCH/DRIVEN PULLEY BET & WIN 50 Set the driven pulley, driven face spring and clutch assembly onto the clutch spring compressor. Compress the tool and install the 28mm drive plate nut. Tighten the 28mm nut to the specified torque.
  • Page 98 . FINAL REDUCTION BET & WIN 50 __________________________________________________________________________________ __________________________________________________________________________________ __________________________________________________________________________________ __________________________________________________________________________________ __________________________________________________________________________________ FINAL REDUCTION __________________________________________________________________________________ SERVICE INFORMATION............8-1 TROUBLESHOOTING.............. 8-1 FINAL REDUCTION DISASSEMBLY........8-2 FINAL REDUCTION INSPECTION........... 8-2 FINAL REDUCTION ASSEMBLY..........8-5 www.PlanDeGraissage.org...
  • Page 99: Service Information

    . FINAL REDUCTION BET & WIN 50 SERVICE INFORMATION Specified Oil: SAE90# At disassembly: 0.12 liter At change: 0.09 liter SPECIAL TOOLS Bearing remover set, 12mm Bearing remover set, 15mm Crankcase assembly collar Crankcase assembly shaft Bearing outer driver, 37x40mm Bearing outer driver, 32x35mm Bearing driver pilot, 17mm Bearing driver pilot, 15mm...
  • Page 100: Final Reduction Disassembly

    . FINAL REDUCTION BET & WIN 50 Bolts FINAL REDUCTION DISASSEMBLY Remove the rear wheel. (  14-2) Remove the left crankcase cover. (  7-2) Remove the clutch/driven pulley. (  7-11) Drain the transmission gear oil into a clean container.
  • Page 101: Final Reduction Inspection

    . FINAL REDUCTION BET & WIN 50 Inspect the final gear and final shaft for wear, damage or seizure. Drive Shaft Bearing Check the left crankcase bearings for excessive play and inspect the oil seal for wear or damage. Final Shaft Bearing Countershaft Bearing Drive Shaft Bearing Final Shaft...
  • Page 102 . FINAL REDUCTION BET & WIN 50 Drive Shaft Bearing BEARING REPLACEMENT (Transmission Case Cover) Remove the transmission case cover bearings using the bearing remover. Remove the final shaft oil seal. Bearing Remover Set Bearing Outer Driver Handle A Drive new bearings into the transmission case cover.
  • Page 103 . FINAL REDUCTION BET & WIN 50 Drive new bearings into the left crankcase. Install a new drive shaft oil seal. Bearing Outer Driver FINAL REDUCTION ASSEMBLY Install the drive shaft into the left crankcase. Drive Shaft Install the countershaft gear into the left crankcase.
  • Page 104 . FINAL REDUCTION BET & WIN 50 Dowel Pins Install the final gear and final shaft into the left crankcase. Install the dowel pins and a new gasket. Final Shaft Install the transmission case cover. Transmission Case Cover Install and tighten the transmission case cover bolts.
  • Page 105 . FINAL REDUCTION BET & WIN 50 After installation, fill the transmission case with the specified oil. °Ø • Place the motorcycle on its main stand on level ground. • Check the sealing washer for wear or damage. Specified Gear Oil: SAE90# Oil Capacity: at disassembly: 0.12 liter at change: 0.09 liter...
  • Page 106 . A.C. GENERATOR BET & WIN 50 __________________________________________________________________________________ __________________________________________________________________________________ __________________________________________________________________________________ __________________________________________________________________________________ __________________________________________________________________________________ A.C. GENERATOR __________________________________________________________________________________ SERVICE INFORMATION............9-1 A.C. GENERATOR REMOVAL..........9-2 A.C. GENERATOR INSTALLATION ........9-4 www.PlanDeGraissage.org...
  • Page 107 . A.C. GENERATOR BET & WIN 50 SERVICE INFORMATION GENERAL INSTRUCTIONS • All A.C. generator maintenance and inspection can be made with the engine installed. • Refer to Section 15 for A.C. generator inspection. TORQUE VALUE Flywheel nut : 34.3_ 39.2N-m SPECIAL TOOLS Flywheel puller Universal holder...
  • Page 108: . A.c. Generator

    . A.C. GENERATOR BET & WIN 50 Bolts A.C. GENERATOR REMOVAL Disconnect the water hoses from the right crankcase cover. Remove the three bolts attaching the right crankcase cover and the cover. Hold the flywheel with an universal holder and then remove the flywheel nut. Universal Holder www.PlanDeGraissage.org...
  • Page 109 . A.C. GENERATOR BET & WIN 50 Remove the A.C. generator flywheel using Lock Nut Wrench the flywheel puller. Flywheel Puller Remove the A.C. generator wire connector. A.C. Generator Wire Connector Remove the two pulser coil bolts and pulser Stator Wire Clamp coil from the right crankcase.
  • Page 110 . A.C. GENERATOR BET & WIN 50 A.C. GENERATOR INSTALLATION A.C. Generator Wire Connector Install the A.C. generator stator and pulser coil wire clamp onto the right crankcase, and then install the pulser coil. Connect the A.C. generator wire connector. Clean the taper hole in the flywheel off any Woodruff Key burrs and dirt.
  • Page 111 . CRANKCASE/CRANKSHAFT BET & WIN 50 __________________________________________________________________________________ __________________________________________________________________________________ __________________________________________________________________________________ __________________________________________________________________________________ __________________________________________________________________________________ CRANKCASE/CRANKSHAFT __________________________________________________________________________________ SERVICE INFORMATION............10-1 TROUBLESHOOTING.............. 10-1 CRANKCASE SEPARATION ............ 10-2 CRANKSHAFT REMOVAL............10-2 CRANKSHAFT INSPECTION ........... 10-3 CRANKSHAFT INSTALLATION..........10-4 CRANKCASE ASSEMBLY ............10-6 10-0 www.PlanDeGraissage.org...
  • Page 112: Crankcase/Crankshaft

    . CRANKCASE/CRANKSHAFT BET & WIN 50 SERVICE INFORMATION GENERAL INSTRUCTIONS • This section covers crankcase separation to service the crankshaft. • The following parts must be removed before separating the crankcase. Engine (  Section 5) Driven pulley (  Section 7) Carburetor ( ...
  • Page 113: Crankcase Separation

    . CRANKCASE/CRANKSHAFT BET & WIN 50 CRANKCASE SEPARATION Remove the crankcase attaching bolts. Bolts Crankcase Puller Attach the crankcase puller on the right crankcase and remove the right crankcase from the left crankcase. Crankcase Puller CRANKSHAFT REMOVAL Attach the crankcase puller on the left crankcase and remove the crankshaft from the left crankcase.
  • Page 114: Crankshaft Inspection

    . CRANKCASE/CRANKSHAFT BET & WIN 50 Remove the remaining bearing on the crankshaft side using the universal bearing puller. °Ø When separating the crankcase, the oil seals must be removed. Replace the oil seals with new ones. Universal Bearing Puller CRANKSHAFT INSPECTION Measure the connecting rod big end side clearance.
  • Page 115: Crankshaft Installation

    . CRANKCASE/CRANKSHAFT BET & WIN 50 Measure the crankshaft runout. Service Limit 0.150mm 0.100mm replace if over replace if over Play Check the crankshaft bearings for excessive play. The bearings must be replaced if they are Play noisy or have excessive play. Axial Radial CRANKSHAFT INSTALLATION...
  • Page 116 Pilot, 20mm Install the crankshaft into the left crankcase. Crankcase Assembly Tool °Ø • Apply KYMCO ULTRA motor oil or molybdenum disulfide to the crank- shaft bearings and connecting rod big end. • Apply grease to the lip of the oil seal and then install it.
  • Page 117: Crankcase Assembly

    . CRANKCASE/CRANKSHAFT BET & WIN 50 Dowel Pins CRANKCASE ASSEMBLY Install the dowel pins and a new gasket to the crankcase mating surface. Assemble the crankcase halves. Crankcase Assembly Tool The distance between the right crankcase oil seal and crankcase surface is about 12.5±0.5 °Ø...
  • Page 118 . CRANKCASE/CRANKSHAFT BET & WIN 50 The distance between the left crankcase oil seal and crankcase surface is about 1.0mm. Oil Seal 1.0mm Install and tighten the crankcase attaching bolts. °Ø After assembly, check the crankshaft for smooth operation. 10-7 www.PlanDeGraissage.org...
  • Page 119 . COOLING SYSTEM BET & WIN 50 __________________________________________________________________________________ __________________________________________________________________________________ __________________________________________________________________________________ __________________________________________________________________________________ __________________________________________________________________________________ COOLING SYSTEM __________________________________________________________________________________ SERVICE INFORMATION -------------------------------------------- 11- 1 TROUBLESHOOTING ------------------------------------------------- 11- 1 RADIATOR -------------------------------------------------------------- 11- 3 WATER PUMP ---------------------------------------------------------- 11- 5 THERMOSENSOR ------------------------------------------------------ 11-11 THERMOSTAT---------------------------------------------------------- 11-12 11-0 www.PlanDeGraissage.org...
  • Page 120: Cooling System

    . COOLING SYSTEM BET & WIN 50 SERVICE INFORMATION GENERAL INSTRUCTIONS • The water pump must be serviced after removing the engine. Other cooling system service can be done with the engine installed in the frame. • The engine must be cool before servicing the cooling system. When the coolant temperature is over 100¢J, never remove the radiator cap to release the pressure because the boiling coolant may cause danger.
  • Page 121 1.095 1.093 1.091 1.088 1.085 1.082 1.079 1.076 1.073 1.070 1.067 1.100 1.098 1.095 1.092 1.089 1.086 1.083 1.080 1.077 1.074 1.071 COOLANT MIXTURE (WITH ANTI-RUST AND ANTI-FREEZING EFFECTS) Freezing Point Mixing Rate KYMCO SIGMA Coolant Concentrate Distilled Water -9¢J -15¢J 360cc 825cc -25¢J...
  • Page 122: Radiator

    . COOLING SYSTEM BET & WIN 50 RADIATOR Front Upper Cover RADIATOR INSPECTION Remove the front upper cover. (  2-3) Remove the front lower cover. (  2-3) Front Lower Cover Inspect the radiator soldered joints and Radiator seams for leaks. Blow dirt out from between core fins with compressed air.
  • Page 123 . COOLING SYSTEM BET & WIN 50 Loosen the hose band and disconnect the Upper Hose upper and lower hose from the radiator. Lower Hose Radiator Remove the two bolts and two nuts on the radiator. Nuts Bolts RADIATOR INSTALLATION Install the radiator on the radiator bracket with the two bolts and two nuts.
  • Page 124: Water Pump

    . COOLING SYSTEM BET & WIN 50 Connect the upper and lower hoses and Upper Hoses secure them with hose bands. Radiator Bracket Overflow Tube Connect the overflow tube and secure with the tube clamp. Connect the air vent tube to the radiator filler.
  • Page 125 . COOLING SYSTEM BET & WIN 50 WATER PUMP/IMPELLER REMOVAL Remove the engine from the frame. (  5-2) Remove the three bolts and the water pump cover, gasket and two dowel pins. Bolts Water Pump Cover Remove the water pump impeller. °Ø...
  • Page 126 . COOLING SYSTEM BET & WIN 50 Inspect the mechanical (water) seal and seal Mechanical Seal Seal Washer (Porcelain) washer for wear or damage. °Ø The mechanical seal and seal washer must be replace as a set. Impeller WATER PUMP SHAFT REMOVAL Bolts Bolts Disconnect the water hose from the right...
  • Page 127 . COOLING SYSTEM BET & WIN 50 WATER PUMP BEARING/ Water Pump Assembly MECHANICAL S EAL REMOVAL Remove the water pump shaft inside bearing. Inside Bearing Water Pump Assembly Drive the mechanical seal out of the water pump assembly from the outer. Mechanical Seal (Water Seal) Outer Bearing...
  • Page 128 . COOLING SYSTEM BET & WIN 50 Water Pump Assembly WATER PUMP BEARING/ MECHANICAL S EAL INS TALLATION Drive a new water pump shaft outer bearing into the water pump assembly from the inside. Drive a new water pump shaft inside bearing into the water pump assembly from the inside.
  • Page 129 . COOLING SYSTEM BET & WIN 50 Install the dowel pins and then install the water pump assembly to the right Water Pump Assembly crankcase. Tighten the three bolts to secure the water pump assembly. Install the two timing cap bolts and the timing cap.
  • Page 130: Thermosensor

    . COOLING SYSTEM BET & WIN 50 Thermosensor THERMOSENSOR THERMOSENSOR REMOVAL Remove the seat, met-in box and frame body cover. Drain the coolant. Disconnect the thermosensor wire. Remove the thermosensor. Thermosensor Wire THERMOSENSOR INSPECTION Thermosenso Suspend the thermosensor in a pan of water over a burner and measure the resistance through the sensor as the water heats up.
  • Page 131: Thermostat

    . COOLING SYSTEM BET & WIN 50 THERMOSTAT Thermostat Housing Screws THERMOSTAT REMOVAL Remove the seat, met-in box and frame body cover. Drain the coolant. Disconnect the water hose from the thermostat housing. Water Hose Remove the two screws and separate the thermostat housing cover .
  • Page 132 . COOLING SYSTEM BET & WIN 50 THERMOSTAT INSTALLATION The installation sequence is the reverse of removal. Fill the cooling system with the specified coolant. (  3-10) Thermostat Housing 11-13 www.PlanDeGraissage.org...
  • Page 133 . CARBURETOR/FUEL PUMP/ BET & WIN 50 FUEL TANK __________________________________________________________________________________ __________________________________________________________________________________ __________________________________________________________________________________ __________________________________________________________________________________ __________________________________________________________________________________ CARBURETOR/FUEL PUMP/ FUEL TANK __________________________________________________________________________________ SERVICE INFORMATION............12- 1 TROUBLESHOOTING.............. 12- 1 THROTTLE VALVE DISASSEMBLY ........12- 2 THROTTLE VALVE INSTALLATION........12- 3 CARBURETOR REMOVAL............12- 4 AUTO BYSTARTER..............
  • Page 134: Service Information

    . CARBURETOR/FUEL PUMP/ BET & WIN 50 FUEL TANK SERVICE INFORMATION GENERAL INSTRUCTIONS • When working with gasoline, keep away from sparks and flames.. • Note the locations of O-rings when disassembling and replace them with new ones during assembly. •...
  • Page 135: Throttle Valve Disassembly

    . CARBURETOR/FUEL PUMP/ BET & WIN 50 FUEL TANK THROTTLE VALVE DISASSEMBLY Remove the rear carrier. (  2-3) Remove the met-in box. (  2-4) Loosen the carburetor cap and remove the throttle valve. Carburetor Cap Throttle Disconnect the throttle cable from the Valve throttle valve.
  • Page 136: Throttle Valve Installation

    . CARBURETOR/FUEL PUMP/ BET & WIN 50 FUEL TANK Throttle Remove the jet needle by removing the Valve needle clip. Check the jet needle and throttle valve for wear or damage. Needle Clip Jet Needle Spring Rubber Seal Carburetor Cap THROTTLE VALVE INSTALLATION Install the jet needle on the throttle valve...
  • Page 137: Carburetor

    . CARBURETOR/FUEL PUMP/ BET & WIN 50 FUEL TANK Groove Install the throttle valve by aligning the groove in the throttle valve with the throttle stop screw. Throttle Stop Screw Carburetor Cap Tighten the carburetor cap. After installation, perform the following adjustments and inspections.
  • Page 138: Auto Bystarter

    . CARBURETOR/FUEL PUMP/ BET & WIN 50 FUEL TANK Remove the two carburetor lock nuts. Bolt Remove the carburetor and water hose. Water Hose AUTO BYSTARTER AUTO BYSTARTER INSPECTION Measure the resistance between the auto bystarter wire terminals. Resistance: 5Ω (10 minutes minimum after stopping the engine) If the resistance exceeds 5Ω, replace the...
  • Page 139 . CARBURETOR/FUEL PUMP/ BET & WIN 50 FUEL TANK Connect the auto bystarter yellow wire to the battery positive (+) terminal and green/ black wire to the battery negative (-) terminal and wait 5 minutes. Connect a hose to the fuel enriching circuit and blow the hose with mouth.
  • Page 140: Float Chamber

    . CARBURETOR/FUEL PUMP/ BET & WIN 50 FUEL TANK AUTO BYSTARTER INSTALLATION Auto Bystarter Install the auto bystarter into the carburetor body until it bottoms.. Install the set plate and then tighten the two screws. Screws Set Plate FLOAT CHAMBER Screws Bolt Remove the two float chamber screws and...
  • Page 141 . CARBURETOR/FUEL PUMP/ BET & WIN 50 FUEL TANK FLOAT/FLOAT VALVE INSPECTION Float Valve Inspect the float for damage or fuel inside the float. Check the float valve seat for wear or damage. Float Seat JETS/SCREWS REMOVAL Main Jet Before removing the throttle stop screw or air screw, record the number of rotations until it seats lightly.
  • Page 142: Float Level Inspection

    . CARBURETOR/FUEL PUMP/ BET & WIN 50 FUEL TANK Main Jet Needle Jet holder FLOAT CHAMBER ASSEMBLY Install the main jet and needle jet holder. Install the air screw and throttle stop screw according to the rotations recorded. °Ø If the air screw must be replaced, be sure to perform the air screw adjustment again.
  • Page 143: Carburetor Installation

    . CARBURETOR/FUEL PUMP/ BET & WIN 50 FUEL TANK O-rings CARBURETOR INSTALLATION °Ø When installation, do not allow foreign particles to enter the carburetor. Check the carburetor insulator and O-ring for wear or damage. Install the carburetor and insulator onto the intake manifold and tighten the two lock nuts.
  • Page 144: Reed Valve

    . CARBURETOR/FUEL PUMP/ BET & WIN 50 FUEL TANK Bolts REED VALVE REMOVAL Remove the rear carrier. Remove the frame body cover. Remove the four intake manifold bolts and gasket. Remove the reed valve and gasket. Intake Manifold Reed Stopper INSPECTION Reeds Check the reed valve for damaged or weak...
  • Page 145 . CARBURETOR/FUEL PUMP/ BET & WIN 50 FUEL TANK Outlet Tube FUEL PUMP REMOVAL Remove the frame center cover. Disconnect the fuel pump inlet, outlet and vacuum tubes. Remove the two fuel pump attaching bolts and the fuel pump. Vacuum Tube Fuel Strainer Inlet Tube FUEL PUMP DISASSEMBLY...
  • Page 146 . CARBURETOR/FUEL PUMP/ BET & WIN 50 FUEL TANK FUEL PUMP INSPECTION Diaphragm Inspect the fuel pump diaphragms A and B for damage. Inspect each gasket for damage. Gaskets Inspect the suction valve, outlet valve and Outlet Relief Valve Suction Valve relief valve in the fuel pump body for damage, cracks or foreign matters.
  • Page 147 . CARBURETOR/FUEL PUMP/ BET & WIN 50 FUEL TANK FUEL PUMP INSTALLATION Outlet Tube Fuel Pump Inlet Tube Install the fuel pump and secure it with the two bolts. Connect the fuel pump inlet, outlet and vacuum tubes. Install the seat, met-in box and frame center cover.
  • Page 148 . CARBURETOR/FUEL PUMP/ BET & WIN 50 FUEL TANK FUEL STRAINER REMOVAL Remove the fuel strainer from the fuel tank. INSPECTION Inspect if the fuel strainer is clogged and clean it with compressed air. °Ø • When removing the fuel strainer, do not allow flames or sparks near the working area and drain the residual gasoline into a container.
  • Page 149 . STEERING HANDLEBAR/FRONT WHEEL/FRONT BET & WIN 50 BRAKE/FRONT SHOCK ABSORBER/FRONT FORK __________________________________________________________________________________ __________________________________________________________________________________ __________________________________________________________________________________ __________________________________________________________________________________ __________________________________________________________________________________ STEERING HANDLEBAR/FRONT WHEEL/FRONT BRAKE/FRONT SHOCK ABSORBER/FRONT FORK __________________________________________________________________________________ SERVICE INFORMATION -------------------------------------------- 13- 1 TROUBLESHOOTING ------------------------------------------------- 13- 2 STEERING HANDLEBAR--------------------------------------------- 13- 3 FRONT WHEEL--------------------------------------------------------- 13- 5 FRONT BRAKE --------------------------------------------------------- 13- 8 BRAKE CALIPER------------------------------------------------------- 13-11 FRONT SHOCK ABSORBER------------------------------------------ 13-14...
  • Page 150 . STEERING HANDLEBAR/FRONT WHEEL/FRONT BET & WIN 50 BRAKE/FRONT SHOCK ABSORBER/FRONT FORK SERVICE INFORMATION GENERAL INSTRUCTIONS • Remove the motorcycle frame covers before removing the front wheel, steering handlebar, front shock absorber and front fork. Jack the motorcycle front wheel off the ground and be careful to prevent the motorcycle from falling down.
  • Page 151: Steering Handlebar/Front Wheel/Front

    . STEERING HANDLEBAR/FRONT WHEEL/FRONT BET & WIN 50 BRAKE/FRONT SHOCK ABSORBER/FRONT FORK TROUBLESHOOTING Hard steering (heavy) Front wheel wobbling • Excessively tightened steering stem top • Bent rim cone race • Loose front axle • Broken steering balls • Bent spoke plate •...
  • Page 152: Steering Handlebar/Front Wheel/Front Brake/Front

    . STEERING HANDLEBAR/FRONT WHEEL/FRONT BET & WIN 50 BRAKE/FRONT SHOCK ABSORBER/FRONT FORK Brake Master Cylinders STEERING HANDLEBAR REMOVAL Remove the handlebar front and rear covers. (  2-7) Remove the front brake master cylinder attaching bolts. Remove the front upper cover. (  2-3) Remove the front lower cover.
  • Page 153 . STEERING HANDLEBAR/FRONT WHEEL/FRONT BET & WIN 50 BRAKE/FRONT SHOCK ABSORBER/FRONT FORK INSTALLATION Install the handlebar onto the steering stem and install the handlebar lock nut and bolt. Tighten the bolt to the specified torque. Torque: 39.2_ 49.0N-m Lock Nut Bolt Throttle Grip Throttle Cable...
  • Page 154: Front Wheel

    . STEERING HANDLEBAR/FRONT WHEEL/FRONT BET & WIN 50 BRAKE/FRONT SHOCK ABSORBER/FRONT FORK FRONT WHEEL REMOVAL Jack the motorcycle front wheel off the ground. Remove the front axle nut to pull out the axle. Remove the front wheel and the speedometer gear unit.
  • Page 155 . STEERING HANDLEBAR/FRONT WHEEL/FRONT BET & WIN 50 BRAKE/FRONT SHOCK ABSORBER/FRONT FORK FRONT WHEEL BEARING Remove the side collar and dust seal. Turn the inner race of each bearing with your finger to see if they turn smoothly and quietly. Also check if the outer race fits tightly in the hub.
  • Page 156 . STEERING HANDLEBAR/FRONT WHEEL/FRONT BET & WIN 50 BRAKE/FRONT SHOCK ABSORBER/FRONT FORK Pack all bearing cavities with grease. Driver Handle Drive in the left bearing. Install the distance collar. Drive in the right bearing. °Ø Do not allow the bearings to tilt •...
  • Page 157 . STEERING HANDLEBAR/FRONT WHEEL/FRONT BET & WIN 50 BRAKE/FRONT SHOCK ABSORBER/FRONT FORK FRONT BRAKE Holder Bolts BRAKE MASTER CYLINDER REM OVAL Remove the handlebar covers. (  2-7) First drain the brake fluid from the hydraulic brake system. Disconnect the front stop switch wire connector.
  • Page 158 . STEERING HANDLEBAR/FRONT WHEEL/FRONT BET & WIN 50 BRAKE/FRONT SHOCK ABSORBER/FRONT FORK INSPECTION Measure the brake master cylinder I.D. Inspect the master cylinder for scratches or cracks. Service Limit: 12.75mm Measure the brake master cylinder piston O.D. Service Limit: 12.645mm Before assembly, inspect the lst and 2nd rubber cups for wear.
  • Page 159 . STEERING HANDLEBAR/FRONT WHEEL/FRONT BET & WIN 50 BRAKE/FRONT SHOCK ABSORBER/FRONT FORK Place the brake master cylinder on the handlebar and install the holder with the “up” mark facing up. Also align the punch mark with the holder joint seam. First tighten the upper bolt and then tighten the lower bolt.
  • Page 160: Brake Caliper

    . STEERING HANDLEBAR/FRONT WHEEL/FRONT BET & WIN 50 BRAKE/FRONT SHOCK ABSORBER/FRONT FORK BRAKE FLUID BLEEDING Keep the handlebar upright and remove the brake reservoir cover and diaphragm. Add the specified brake fluid to the upper limit. °Ø • Do not allow dust or water to enter the brake system during refilling.
  • Page 161 . STEERING HANDLEBAR/FRONT WHEEL/FRONT BET & WIN 50 BRAKE/FRONT SHOCK ABSORBER/FRONT FORK Dowel Pin Remove the piston from the brake caliper. If necessary, use compressed air to squeeze out the piston through the brake fluid inlet opening and place a shop towel under the caliper to avoid contamination caused by the removed piston.
  • Page 162 . STEERING HANDLEBAR/FRONT WHEEL/FRONT BET & WIN 50 BRAKE/FRONT SHOCK ABSORBER/FRONT FORK Check the caliper cylinder for scratches or wear and measure the cylinder bore. Service Limit: 25.45mm ASSEMBLY Clean all removed parts. Apply silicon grease to the piston and oil seal.
  • Page 163: Front Shock Absorber

    . STEERING HANDLEBAR/FRONT WHEEL/FRONT BET & WIN 50 BRAKE/FRONT SHOCK ABSORBER/FRONT FORK Fluid Tube Bolt Brake Caliper Brake Fluid Tube Connect the brake fluid tube to the brake caliper and tighten the fluid tube bolt. Torque: 24.5_ 34.3N-m Fill the brake reservoir with the specified brake fluid and bleed air from the brake system.
  • Page 164 . STEERING HANDLEBAR/FRONT WHEEL/FRONT BET & WIN 50 BRAKE/FRONT SHOCK ABSORBER/FRONT FORK Circlip Set the front shock absorber in a vise. Remove the damper rod hex bolt and copper washer. Pull out the front shock absorber tube. °Ø After the hex bolt is removed, place a container under the front shock absorber to drain the engine oil from it.
  • Page 165 . STEERING HANDLEBAR/FRONT WHEEL/FRONT BET & WIN 50 BRAKE/FRONT SHOCK ABSORBER/FRONT FORK Measure the front shock absorber spring free length. Service Limit: 233mm replace if below ASSEMBLY Install the damper spring onto the damper rod and then install them into the front shock absorber tube.
  • Page 166 . STEERING HANDLEBAR/FRONT WHEEL/FRONT BET & WIN 50 BRAKE/FRONT SHOCK ABSORBER/FRONT FORK Hex Bolt Circlip Dust Boot Install the oil seal Install the circlip. Install the dusts seal and dust boot. Dust Seal INSTALLATION Install the front shock absorbers onto the front fork.
  • Page 167: Front Fork

    . STEERING HANDLEBAR/FRONT WHEEL/FRONT BET & WIN 50 BRAKE/FRONT SHOCK ABSORBER/FRONT FORK FRONT FORK REMOVAL Remove the handlebar covers. (  2-6) Remove the steering handlebar. (  13-4) Remove the front upper cover. (  2-5) Remove the front lower cover. (  2-5) Remove the front inner fender.
  • Page 168 . STEERING HANDLEBAR/FRONT WHEEL/FRONT BET & WIN 50 BRAKE/FRONT SHOCK ABSORBER/FRONT FORK Bottom Cone Race BALL RACE REPLACEMENT Ball Race Remover Drive out the ball races. Drive in new ball races. Outer Driver °Ø Be sure to drive the ball races into place completely.
  • Page 169 . STEERING HANDLEBAR/FRONT WHEEL/FRONT BET & WIN 50 BRAKE/FRONT SHOCK ABSORBER/FRONT FORK Ball Race Apply grease to the top cone race and install Tighten the top cone race and then turn the steering stem right and left several times to make steel balls contact each other closely.
  • Page 170: Rear Brake/Rear Brake Drun/Rear Shock Absorber

    . REAR BRAKE/REAR FORK/REAR BET & WIN 50 WHEEL/REAR SHOCK ABSORBER __________________________________________________________________________________ __________________________________________________________________________________ __________________________________________________________________________________ __________________________________________________________________________________ __________________________________________________________________________________ REAR BRAKE/REAR BRAKE DRUN/ REAR SHOCK ABSORBER __________________________________________________________________________________ SERVICE INFORMATION -------------------------------------------- 14-1 TROUBLESHOOTING ------------------------------------------------- 14-1 REAR WHEEL ---------------------------------------------------------- 14-2 REAR BRAKE DRUM -------------------------------------------------- 14-3 REAR SHOCK ABSORBER-------------------------------------------- 14-5 14-0 www.PlanDeGraissage.org...
  • Page 171: Service Information

    . REAR BRAKE/REAR FORK/REAR BET & WIN 50 WHEEL/REAR SHOCK ABSORBER SERVICE INFORMATION GENERAL INSTRUCTIONS • When performing the services stated in this section, the engine and exhaust muffler must be cold to avoid scalding. • During servicing, keep oil or grease off the brake pads and brake disk. SPECIFICATIONS Item Standard (mm)
  • Page 172: Rear Wheel

    . REAR BRAKE/REAR FORK/REAR BET & WIN 50 WHEEL/REAR SHOCK ABSORBER REAR WHEEL REMOVAL Remove the exhaust muffler. (  2-6) Remove the rear axle nut to remove the rear wheel. Rear Axle Nut INSPECTION Measure the rear wheel rim runout. Service Limits: Radial: 2.0mm replace if over Axial:...
  • Page 173: Rear Brake Drum

    . REAR BRAKE/REAR FORK/REAR BET & WIN 50 WHEEL/REAR SHOCK ABSORBER REAR BRAKE DRUM Remove the rear wheel. (  14-3) Inspect the rear brake drum. Measure the rear brake drum I.D. Service Limit: 95.5mm replace if over BRAKE LINING INSPECTION Measure the brake lining thickness.
  • Page 174 . REAR BRAKE/REAR FORK/REAR BET & WIN 50 WHEEL/REAR SHOCK ABSORBER Remove the brake arm bolt to remove the Brake Arm Bolt Wear Indicator Plate brake arm, wear indicator plate and felt seal. Remove the brake cam. Brake Arm Brake Cam REAR BRAKE ASSEMBLY Apply grease to the anchor pin and brake shoe moving parts.
  • Page 175: Rear Shock Absorber

    . REAR BRAKE/REAR FORK/REAR BET & WIN 50 WHEEL/REAR SHOCK ABSORBER Brake Arm Brake Cable Install the brake arm pin. Connect the brake cable and install the adjusting nut. Install the rear wheel. Adjust the rear brake lever free play. (  3-12) Brake Arm Pin Adjusting Nut REAR SHOCK ABSORBER...
  • Page 176 . REAR BRAKE/REAR FORK/REAR BET & WIN 50 WHEEL/REAR SHOCK ABSORBER DISASSEMBLY Disassemble the left rear shock absorbers using the rear shock absorber remover. Rear Shock Absorber Remover INSPECTION Inspect the damper rod for bending or damage. Inspect the damper for oil leaks. Inspect the damper rubber for deterioration or damage.
  • Page 177 . REAR BRAKE/REAR FORK/REAR BET & WIN 50 WHEEL/REAR SHOCK ABSORBER ASSEMBLY Assemble the rear shock absorbers in the reverse order of disassembly. INSTALLATION Install the rear shock absorbers in the reverse order of removal. Torque: Upper Mount Bolt: 39.2N-m Lower Mount Bolt: 19.6_ 29.4N-m Lower Mount Bolts 14-7...
  • Page 178 . ELECTRICAL EQUIPMENT BET & WIN 50 __________________________________________________________________________________ __________________________________________________________________________________ __________________________________________________________________________________ __________________________________________________________________________________ __________________________________________________________________________________ ELECTRICAL EQUIPMENT __________________________________________________________________________________ SERVICE INFORMATION............15- 1 TROUBLESHOOTING.............. 15- 1 CHARGING SYSTEM............... 15- 3 BATTERY................15- 4 IGNITION SYSTEM ..............15- 7 STARTING SYSTEM..............15-11 15-0 www.PlanDeGraissage.org...
  • Page 179: Electrical Equipment

    . ELECTRICAL EQUIPMENT BET & WIN 50 SERVICE INFORMATION GENERAL INSTRUCTIONS • It is not necessary to check the battery electrolyte or fill with distilled water. • Remove the battery from the motorcycle for charging. Do not remove the electrolyte cap.. •...
  • Page 180: Ignition System

    . ELECTRICAL EQUIPMENT BET & WIN 50 IGNITION SYSTEM No spark at plug Engine starts but turns poorly • Faulty spark plug • Ignition primary circuit • Poorly connected, broken or shorted wire óFaulty ignition coil óBetween A.C. generator and CDI unit óPoorly connected wire or connector óBetween CDI unit and ignition coil •...
  • Page 181 . ELECTRICAL EQUIPMENT BET & WIN 50 CHARGING SYSTEM 5. 9Ω 15-3 www.PlanDeGraissage.org...
  • Page 182 . ELECTRICAL EQUIPMENT BET & WIN 50 Battery Cover Screw BATTERY Remove the seat and met-in box. (  2-3) Remove the battery cover screw and the battery cover. Remove the battery. First disconnect the battery negative (-) cable and then the positive (+) cable. °Ø...
  • Page 183 . ELECTRICAL EQUIPMENT BET & WIN 50 PERFORMANCE TEST Warm up the engine. Remove the floor mat and battery cover. °Ø Use a fully charged battery to check the charging system output. Stop the engine and open the fuse box. Disconnect the wire lead from the fuse terminal.
  • Page 184 . ELECTRICAL EQUIPMENT BET & WIN 50 RESISTOR INSPECTION Remove the front upper/lower cover. (  2-3) Measure the resistance between the resistor B pink wire and ground. Measure the resistance between the resistor A green/black wire and ground. Resistances: Resistor A: 9.9_ 10.5Ω...
  • Page 185 . ELECTRICAL EQUIPMENT BET & WIN 50 IGNITION SYSTEM 15-7 www.PlanDeGraissage.org...
  • Page 186 . ELECTRICAL EQUIPMENT BET & WIN 50 IGNITION COIL INSPECTION Continuity Test °Ø This test is to inspect the continuity of ignition coil. Remove the met-in box. (  12-4) Measure the resistance between the ignition coil primary coil terminals. Resistance (20¢J): 0.153_ 0.187Ω...
  • Page 187 . ELECTRICAL EQUIPMENT BET & WIN 50 Ignition Coil Performance Test Remove the ignition coil. Ignition Coil Inspect the ignition coil with an ignition coil tester. °Ø Ignition Coil Tester AC 110V Follow the ignition coil tester manufac- 07508-0070100 6V/12V Watch Window Changeover turer‘s instructions.
  • Page 188 . ELECTRICAL EQUIPMENT BET & WIN 50 Black/ ° € ° € ° € Blue/Yellow White Green ° € ° € CDI UNIT INSPECTION Open the front tool box and remove the bolt. Unit Remove the front tool box. (  2-4) Disconnect the CDI coupler and remove the CDI unit.
  • Page 189 . ELECTRICAL EQUIPMENT BET & WIN 50 STARTING SYSTEM 15-11 www.PlanDeGraissage.org...
  • Page 190 . ELECTRICAL EQUIPMENT BET & WIN 50 STARTER RELAY INSPECTION Open the front tool box and remove the bolt. Remove the front tool box. (  2-4) Disconnect the starter relay coupler and then Starter Relay remove the starter relay. Connect the starter relay green/yellow terminal to the 12V battery positive (+) terminal and the relay yellow/red terminal to...
  • Page 191 . ELECTRICAL EQUIPMENT BET & WIN 50 Starter Motor STARTER MOTOR INSPECTION Starter Motor Battery (+) Terminal Connect a battery across the starter motor and check for its operation. °Ø 1. Do not turn the starter motor for a long time. 2.
  • Page 192 . INSTRUMENT/SWITCHES/LIGHTS BET & WIN 50 __________________________________________________________________________________ __________________________________________________________________________________ __________________________________________________________________________________ __________________________________________________________________________________ __________________________________________________________________________________ INSTRUMENT/SWITCHES/LIGHTS __________________________________________________________________________________ SERVICE INFORMATION............16-1 TROUBLESHOOTING.............. 16-1 FUEL UNIT................16-2 OIL METER ................16-3 SWITCHES ................16-4 STOP SWITCH INSPECTION ........... 16-6 BULB REPLACEMENT ............16-7 INSTRUMENT/HEADLIGHT............ 16-8 16-0 www.PlanDeGraissage.org...
  • Page 193: Instrument/Switches/Lights

    . INSTRUMENT/SWITCHES/LIGHTS BET & WIN 50 SERVICE INFORMATION GENERAL INSTRUCTIONS • Wires should be connected to other wires of the same color. Couplers must be connected to other couplers of the same color. • All plastic plugs have locking tabs that must be released before disconnecting, and must be aligned when reconnecting.
  • Page 194: Fuel Unit

    . INSTRUMENT/SWITCHES/LIGHTS BET & WIN 50 FUEL UNIT Fuel Unit °Ø No Smoking! REMOVAL Remove the frame body cover. (  2-3) Disconnect the fuel unit wire connectors. Turn the fuel unit retainer counterclockwise to remove it. °Ø Do not damage the fuel unit wire. Remove the fuel unit.
  • Page 195: Oil Meter

    . INSTRUMENT/SWITCHES/LIGHTS BET & WIN 50 INSTALLATION The installation sequence is the reverse of removal. °Ø • Align the tab on the fuel unit with the groove on the fuel tank. • Turn the retainer clockwise to secure it. Groove OIL METER Oil Meter Float...
  • Page 196: Switches

    . INSTRUMENT/SWITCHES/LIGHTS BET & WIN 50 Move the oil meter float up and down to see Oil Indicator Light if the oil indicator light will go out and come °Ø If the oil indicator light does not light, check for burned bulb, loose wire or connector.
  • Page 197 . INSTRUMENT/SWITCHES/LIGHTS BET & WIN 50 HEADLIGHT SWITCH INSPECTION Remove the handlebar lower cover. (  2-7) Disconnect the headlight switch wire coupler and check for continuity between wire terminals. Color Blue/White Yellow Brown Pink Symbol °≥ °≥ °≥ °≥ °≥...
  • Page 198: Stop Switch Inspection

    . INSTRUMENT/SWITCHES/LIGHTS BET & WIN 50 STARTER SWITCH INSPECTION Check for continuity between wire terminals. Push the starter button when measuring. Color Yellow/Red Green Symbol FREE PUSH °≥ °≥ Starter Switch HORN SWITCH INSPECTION Check for continuity between wire terminals. Push the horn button when measuring.
  • Page 199: Bulb Replacement

    . INSTRUMENT/SWITCHES/LIGHTS BET & WIN 50 Horn HORN INSPECTION Remove the front upper/lower cover. (  2-3) Disconnect the horn wire couplers. The horn is normal if it sounds when a 12V battery is connected across the horn wire terminals. FRONT TURN SIGNAL LIGHT REPLACEMENT Remove the turn signal light shell and the...
  • Page 200 . INSTRUMENT/SWITCHES/LIGHTS BET & WIN 50 INSTRUMENT REMOVAL Remove the front upper cover. (  2-5) Disconnect the instrument wire couplers and connectors. Disconnect the speedometer cable. Remove the four screws attaching instrument cover and leg shield. Remove the instruments. Screws SPEEDOMETER REMOVAL Screws...
  • Page 201: Evaporative/Exhaust Emission Control System

    . EVAPORATIVE/EXHAUST EMISSION CONTROL SYSTEM BET & WIN 50 __________________________________________________________________________________ __________________________________________________________________________________ __________________________________________________________________________________ __________________________________________________________________________________ __________________________________________________________________________________ EVAPORATIVE/EXHAUST EMISSION CONTROL SYSTEM __________________________________________________________________________________ EXHAUST EMISSION CONTROL SYSTEM ......17-1 EXHAUST MUFFLER .............. 17-2 EXHAUST EMISSION RELATED SYSTEM INSPECTION..17-3 17-0 www.PlanDeGraissage.org...
  • Page 202 . EVAPORATIVE/EXHAUST EMISSION CONTROL SYSTEM BET & WIN 50 EXHAUST EMISSION CONTROL SYSTEM The exhaust emission control system adopted by this model is an oxidizing catalytic converter which is located in the middle of the exhaust muffler to reduce pollutants in the exhaust emission.
  • Page 203 . EVAPORATIVE/EXHAUST EMISSION CONTROL SYSTEM BET & WIN 50 Exhaust Muffler Joint Lock EXHAUST MUFFLER REMOVAL Remove the two exhaust muffler joint lock nuts and two exhaust muffler lock bolts. Remove the exhaust muffler. °Ø • The temperature of exhaust muffler is very high.
  • Page 204 . EVAPORATIVE/EXHAUST EMISSION CONTROL SYSTEM BET & WIN 50 EXHAUST EMISSION RELATED SYSTEM INSPECTION Clean or replace the air cleaner. Clean and adjust the carburetor. Inspect the auto bystarter system. Clean and inspect the spark plug. Inspect the ignition system. EXHAUST EMISSION TEST AND ADJUSTMENT 1.

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