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Summary of Contents for Yamaha VINO 125
- Page 1 YJ125S SERVICE MANUAL LIT-11616-17-43 5YR-28197-10...
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Page 2: Electrical System
EAS00011 TABLE OF CONTENTS GENERAL INFORMATION INFO SPECIFICATIONS SPEC PERIODIC CHECKS AND ADJUSTMENTS CHASSIS CHAS ENGINE CARBURETOR CARB ELECTRICAL SYSTEM ELEC TROUBLESHOOTING TRBL SHTG... -
Page 3: Table Of Contents
INFO CHAPTER 1 GENERAL INFORMATION SCOOTER IDENTIFICATION ..............1-1 VEHICLE IDENTIFICATION NUMBER ..........1-1 MODEL LABEL .................. 1-1 IMPORTANT INFORMATION ..............1-2 PREPARATION FOR REMOVAL AND DISASSEMBLY ....1-2 REPLACEMENT PARTS ..............1-2 GASKETS, OIL SEALS AND O-RINGS ..........1-2 LOCK WASHERS/PLATES AND COTTER PINS ...... -
Page 4: General Information Scooter Identification
SCOOTER IDENTIFICATION INFO EAS00015 GENERAL INFORMATION SCOOTER IDENTIFICATION EAS00017 VEHICLE IDENTIFICATION NUMBER The vehicle identification number 1 is stamped into the steering head pipe. EAS00018 MODEL LABEL The model label 1 is affixed to the seat. This information will be needed to order spare parts. -
Page 5: Important Information
5. Keep all parts away from any source of fire. EAS00021 REPLACEMENT PARTS Use only genuine Yamaha parts for all replace- ments. Use oil and grease recommended by Yamaha for all lubrication jobs. Other brands may be similar in function and appearance, but infe- rior in quality. -
Page 6: Lock Washers/Plates And Cotter Pins
IMPORTANT INFORMATION INFO EAS00023 LOCK WASHERS/PLATES AND COTTER PINS After removal, replace all lock washers/plates 1 and cotter pins. After the bolt or nut has been tightened to specification, bend the lock tabs along a flat of the bolt or nut. EAS00024 BEARINGS AND OIL SEALS Install bearings and oil seals so that the... -
Page 7: Checking The Connections
CHECKING THE CONNECTIONS INFO EAS00026 CHECKING THE CONNECTIONS Check the leads, couplers, and connectors for stains, rust, moisture, etc. 1. Disconnect: 8 lead 8 coupler 8 connector 2. Check: 8 lead 8 coupler 8 connector Moisture Dry with an air blower. Rust/stains Connect and disconnect several times. -
Page 8: Special Tools
SPECIAL TOOLS INFO EAS00027 SPECIAL TOOLS The following special tools are necessary for complete and accurate tune-up and assembly. Use only the appropriate special tools as this will help prevent damage caused by the use of inappropri- ate tools or improvised techniques. Special tools, part numbers or both may differ depending on the country. - Page 9 SPECIAL TOOLS INFO Tool NO. Tool name / Function Illustration Fork seal driver weight 1 90890-01367 YM-A9409-7 Fork seal driver attachment(Ø30mm) 2 90890-01400 YM-A9409-3 This tool is used when installing the fork seal. 90890-01384 Oil seal guide YM-33299 This tool is used for protecting the oil seal lip when installing the secondary sliding sheave.
- Page 10 Illustration 90890-06754 Ignition checker YM-34487 This instrument is necessary for checking the ignition system components. 90890-85505 Yamaha bond NO.1215 ACC-11001-05-01 This sealant (bond) is used for crankcase mating surface, etc. 80890-04116 Valve guide remover (4.5 mm) YM-04116 This tool is used to remove or install the valve guides.
- Page 11 SPEC CHAPTER 2 SPECIFICATIONS GENERAL SPECIFICATIONS ..............2-1 ENGINE SPECIFICATIONS ..............2-2 CHASSIS SPECIFICATIONS ..............2-11 ELECTRICAL SPECIFICATIONS ............2-14 CONVERTION TABLE / GENERAL TIGHTENING TORQUE SPECIFICA- TIONS ....................2-18 TIGHTENING TORQUES................ 2-19 ENGINE TIGHTENING TORQUES ..........2-19 CHASSIS TIGHTENING TORQUES ..........2-21 LUBRICATION POINTS AND LUBRICANT TYPES ......
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Page 12: General Specifications
SPEC GENERAL SPECIFICATIONS SPECIFICATIONS GENERAL SPECIFICATIONS Item Standard Limit Model code 5YR1 (for USA) … 5YR2 (for CAN) … Dimensions Overall length 1755 mm (69.1 in) … Overall width 699 mm (27.5 in) … Overall height 1063 mm (41.8 in) …... -
Page 13: Engine Specifications
Wet sump … Recommended oil SAE20W40SE … -20˚ -10˚ 0˚ 10˚ 20˚ 30˚ 40˚ 50˚ Yamaha 4-cycle oil … EFERO X, Z, BX SAE 10W-30 SAE 10W-40 SAE 20W-40 SAE 20W-50 Quantity Periodic oil change 1.0L(0.92 lmp qt, 1.09 US qt) …... - Page 14 SPEC ENGINE SPECIFICATIONS Standard Limit Item Oil filter Oil filter type Wire mesh … Oil pump Oil pump type Trochoid … Inner rotor to outer rotor tip clearance 0.15 mm 0.23mm Outer rotor to pump housing clearance 0.013-0.036 mm 0.106mm Oil pump housing to inner rotor and outer 0.06-0.10 mm 0.17mm...
- Page 15 SPEC ENGINE SPECIFICATIONS Standard Limit Item Camshaft Drive system Chain drive (left) … Intake camshaft lobe dimensions Measurement A 26.153~26.253 mm 26.053 mm Measurement B 21.015~21.115 mm 20.915 mm Measurement C 5.203mm … Exhaust camshaft lobe dimensions Measurement A 26.153~26.253 mm 26.053 mm Measurement B 21.056~21.156 mm...
- Page 16 SPEC ENGINE SPECIFICATIONS Standard Limit Item Timing chain Model/number of links Morse 92RH2005 / 88 … Tensioning system Automatic … Valve, valve seats, valve guides Valve clearance (cold) Intake 0.08~0.12 mm … Exhaust 0.13~0.17 mm … Valve dimensions Head Diameter Face Width Seat Width Margin Thickness...
- Page 17 SPEC ENGINE SPECIFICATIONS Standard Limit Item Valve springs Free length Intake 37.30 mm 35.40 mm Exhaust 37.30 mm 35.40 mm Installed length (valve closed) Intake 25.77mm … Exhaust 25.77mm … Compressed spring force (installed) Intake 147±11N (15.0 ± 1.1 kgf/mm) …...
- Page 18 SPEC ENGINE SPECIFICATIONS Standard Limit Item Piston Piston-to-cylinder clearance 0.010~0.030 mm 0.150mm Diameter D 51.470~51.510 mm … Height H 3.5 mm … Piston pin bore (in the piston) Diameter 13.002~13.013 mm 13.043 mm Offset 0.35~0.65mm … Offset direction Intake side …...
- Page 19 SPEC ENGINE SPECIFICATIONS Standard Limit Item Rocker arm/rocker arm shaft Rocker arm inside diameter 10~10.015mm … Rocker arm shaft outside diameter 9.981~9.991 mm … Arm-to-shaft clearance 0.009~0.034 mm … Connecting rod Connecting rod length 97.95~98.05 mm … Small end inside diameter 13.015~13.028mm …...
- Page 20 SPEC ENGINE SPECIFICATIONS Standard Limit Item Clutch Clutch type Automatic centrifugal … Clutch shoe thickness 3.4 ± 0.1 mm 2.0mm Clutch shoe spring free length 28.0 ± 0.4 mm … Clutch housing inside diameter 120 ± 0.1 mm 120.3mm Compression spring free length 113.6 mm …...
- Page 21 SPEC ENGINE SPECIFICATIONS Standard Limit Item Throttle bodys Model (manufacturer) × quantity 5YR (SAFETY CONTROL … CABLE) × 2 Intake vacuum pressure 30.0kpa (238.6mmHg) … Throttle cable free play (at the flange of the 3~5mm … throttle grip) ID mark 5YR1 …...
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Page 22: Chassis Specifications
SPEC CHASSIS SPECIFICATIONS CHASSIS SPECIFICATIONS Standard Limit Item Frame Frame type Steel tube underbone … Caster angle 32 ° … Trail 75 mm … Front wheel Wheel type Cast wheel … Size 10 × MT2.15 … Material Aluminum … Wheel travel 59mm …... - Page 23 SPEC CHASSIS SPECIFICATIONS Standard Limit Item Front disc brake Brake type Single disc brake … Operation Right-hand operation … Brake lever free play (at lever end) 3~5mm … Recommended fluid DOT 4 … Brake disc Diameter x thickness 180.0 × 4.0 mm 180.0 ×...
- Page 24 SPEC CHASSIS SPECIFICATIONS Standard Limit Item Rear drum brake Brake type Drum brake … Operation Left-hand operation … Brake lever free play (at lever end) 10~20mm … Brake drum inside diameter 110 mm 111mm Lining thickness 4.0mm Front suspension Suspension type Telescopic …...
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Page 25: Electrical Specifications
SPEC ELECTRICAL SPECIFICATIONS ELECTRICAL SPECIFICATIONS Standard Limit Item System voltage … Ignition system Ignition system type C.D.I. … Ignition timing (B.T.D.C.) 5 °/1650 r/min (IDL) … Advancer type Digital … 304~456 Ω / WR-WL Pickup coil resistance /color … C.D.I. unit model (manufacturer) 5YR00(T-MORIC) …... - Page 26 SPEC ELECTRICAL SPECIFICATIONS Standard Limit Item Bulbs (voltage/wattage × quantity) Headlight 12 V 60 W/55 W × 1 … Tail/brake light 12 V 8W/27 W × 1 … Front turn signal light 12 V 10 W × 2 … Rear turn signal light 12 V 10 W ×...
- Page 27 SPEC ELECTRICAL SPECIFICATIONS Standard Limit Item Electric starting system System type Constant mesh … Starter motor Model (manufacturer) 4TE1 (T-MORIC) … Suction voltage … Power output 0.3 kW … Brushes Overall length 10.0 mm 3.5mm Quantity … Spring force 5.52~8.28 N …...
- Page 28 SPEC ELECTRICAL SPECIFICATIONS Standard Limit Item Fuel lever meter Type( manufacturer ) Moving magneto (CHAO LONG) … Fuse (amperage × quantity) Main fuse 10A×1 … Reserve fuse 10A×1 … 2-17...
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Page 29: Convertion Table / General Tightening Torque Specifica
CONVERTION TABLE / GENERAL TIGHTENING SPEC TORQUE SPECIFICATIONS EB201000 EAS00030 CONVERSION TABLE GENERAL TIGHTENING TORQUE All specification data in this manual are listed SPECIFICATIONS in SI and METRIC UNITS. This chart specifies tightening torques for stan- Use this table to convert METRIC unit data to dard fasteners with a standard ISO thread IMPERIAL unit data. -
Page 30: Tightening Torques
SPEC TIGHTENING TORQUES ENGINE TIGHTENING TORQUES Tightening Thread Part to be tightened ’ Part name torque Remarks size Nm m•kgf ft•lb Cylinder head and cylinder 15.9 12.5 1.25 Spark plug Cylinder head(timing chain side) Bolt Mainfold stud bolt Exhaust pipe stud bolt Breather assembly Bolt Stopper plate... - Page 31 SPEC TIGHTENING TORQUES Tightening Thread ’ Part to be tightened Part name torque Remarks size Nm m•kgf ft•lb 16.6 Drain bolt(engine oil ) V-belt case air filter element holder Screw Oil pipe Bolt Cylinder stud bolt (case1) 12.5 1.25 Cylinder stud bolt (case2) 12.5 1.25 Crankcase cover3...
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Page 32: Chassis Tightening Torques
SPEC TIGHTENING TORQUES CHASSIS TIGHTENING TORQUES Tightening Thread Part to be tightened torque Remarks size m•kgf ft•lb Frame and engine bracket 2 30.4 Engine bracket 2 and engine bracket 3 39.8 Engine bracket, engine and centerstand 23.1 Rear shock absorber and frame 21.7 Rear shock absorber and engine 13.0... -
Page 33: Engine Lubrication Points And Lubricant Types
SPEC LUBRICATION POINTS AND LUBRICANT TYPES ENGINE LUBRICATION POINTS AND LUBRICANT TYPES Lubrication Point Lubricant Oil seal lips O-ring (Except V-belt drive unit) Cylinder head tightening nut mounting surface Cylinder head stud bolt thread Cylinder head gasket dowel pin Crankshaft pin outside surface Connecting rod Piston outside and ring groove Piston pin outside surface... -
Page 34: Lubrication Points And Lubricant Types
SPEC LUBRICATION POINTS AND LUBRICANT TYPES Lubrication Point Lubricant Primary sheave inside, Collar, Solid bush, Secondary fixed inner surface BEL-RAY asembly lube Secondary sheave torque cam ditch BEL-RAY asembly lube Gasket (Cylinder head cover) Sealant Stopper guide (Cylinder head cover) Sealant Crankcase mating surfaces Sealant... -
Page 35: Chassis Lubrication Points And Lubrication Types
SPEC LUBRICATION POINTS AND LUBRICANT TYPES EAS00032 CHASSIS LUBRICATION POINTS AND LUBRICATION TYPES Lubrication Point Lubricant Front wheel oil seal lips Frame head pipe bearing (upper and lower) Frame head pipe dust seal lips ( lower) Tube guide (throttle grip) inner surface Brake lever and lever holder bolt sliding surface Sidestand and frame sliding surface Centerstand sliding surface and mounting bolt... - Page 36 Download the full PDF manual instantly. Our customer service e-mail: aservicemanualpdf@yahoo.com...
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Questions and answers
there is a nozzle in the back by back tire that looks like a gear box that it goes to. What fluid goes into there? My scooter has no power of taking off. You give it gas and it barely goes. Can you tell me what is wrong?
The Yamaha Vino 125 uses final gear oil for the gearbox. The recommended oil is SAE 20W40 SE Yamaha 4-cycle oil.
A lack of power when accelerating could be caused by several factors, including:
- Old or clogged fuel in the carburetor due to prolonged sitting.
- Dirty or faulty spark plug affecting ignition.
- Vacuum leaks reducing engine performance.
- Clogged air filter restricting airflow.
- Low compression due to engine wear.
- Worn drive belt or clutch components in the CVT transmission.
Checking and cleaning the fuel system, spark plug, and air filter, along with inspecting the CVT system, can help diagnose and fix the issue.
This answer is automatically generated