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Yamaha SR125 Owner's Manual

2001
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OWNER'S MANUAL
SR125
3MW-28199-E3

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  • Page 1 OWNER’S MANUAL SR125 3MW-28199-E3...
  • Page 3 Yamaha a reputation for dependability. Please take the time to read this manual thoroughly, so as to enjoy all your SR125’s advantages. The owner’s manual does not only instruct you in how to operate, inspect and maintain your motorcycle, but also in how to safeguard yourself and oth- ers from trouble and injury.
  • Page 4 This manual should be considered a permanent part of this motorcycle and should remain with it even if the motorcycle is subsequently sold. Yamaha continually seeks advancements in product design and quality. Therefore, while this manual contains the most current product information available at the time of printing, there may be minor discrepancies between your motorcycle and this manual.

  • Page 5: Important Manual Information

    IMPORTANT MANUAL INFORMATION EW000002 WARNING PLEASE READ THIS MANUAL CAREFULLY AND COMPLETELY BEFORE OPERATING THIS MOTORCYCLE.
  • Page 6 IMPORTANT MANUAL INFORMATION EAU03337 SR125 OWNER’S MANUAL © 2001 by Yamaha Motor Co., Ltd. 1st Edition, January 2001 All rights reserved. Any reprinting or unauthorized use without the written permission of Yamaha Motor Co., Ltd. is expressly prohibited. Printed in Japan.

  • Page 7: Table Of Contents

    TABLE OF CONTENTS EAU00009 GIVE SAFETY THE RIGHT OF WAY....1-1 PRE-OPERATION CHECKS .......4-1 Pre-operation check list........4-1 DESCRIPTION ............2-1 Left view .............2-1 OPERATION AND IMPORTANT RIDING Right view............2-2 POINTS..............5-1 Controls/Instruments ..........2-3 Starting the engine ..........5-1 Starting a warm engine ........5-3 Shifting ...............5-4 INSTRUMENT AND CONTROL FUNCTIONS ..3-1 Recommended shift points Main switch/steering lock ........3-1...
  • Page 8 TABLE OF CONTENTS Throttle cable free play adjustment....6-12 Turn signal and tail/brake light bulb Cam chain adjustment ........6-12 replacement..........6-30 Valve clearance adjustment......6-13 Front wheel removal ........6-30 Tires ..............6-13 Front wheel installation ........6-31 Wheels ............. 6-15 Rear wheel removal .........6-32 Clutch lever free play adjustment.....

  • Page 9: Give Safety The Right Of Way

    EAU00021 GIVE SAFETY THE RIGHT OF WAY Motorcycles are fascinating vehicles, which can give you an unsurpassed feeling of power and freedom. However, they also impose certain limits, which you must accept; even the best motorcycle does not ignore the laws of physics. Regular care and maintenance are essential for preserving your motorcycle’s value and operating condition.

  • Page 10: Description

    D ESCRIPTION EAU00026 Left view 1. Fuel tank cap (page 3-5) 5. Sidestand (page 3-9) 2. Fuel cock (page 3-6) 6. Starter (choke) knob (page 3-7) 3. Helmet holder (page 3-8) 7. Shift pedal (page 3-4) 4. Fuse box (page 6-28)

  • Page 11: Right View

    DESCRIPTION Right view 8. Seat (page 3-8) 12. Engine oil filler cap 9. Rear shock absorber spring 13. Rear brake pedal (page 3-5) preload adjusting ring (page 3-9) 14. Footrest 10. Tool kit (page 6-1) 15. Battery (page 6-26) 11. Air filter (page 6-10)

  • Page 12: Controls/Instruments

    DESCRIPTION Controls/Instruments 1. Clutch lever (page 3-4) 5. Right handlebar switches (page 3-3) 2. Left handlebar switches (page 3-2) 6. Front brake lever (page 3-4) 3. Speedometer (page 3-2) 7. Throttle grip (page 6-12) 4. Front brake fluid reservoir (page 6-20) 8.

  • Page 13: Instrument And Control Functions

    EAU00027 I NSTRUMENT AND CONTROL FUNCTIONS 1. Push 2. Turn EAU00029* EAU00040 Main switch/steering lock LOCK EW000016 The steering is locked in this position WARNING The main switch controls the ignition and all electrical circuits are switched and lighting systems. Its operation is Never turn the key to “OFF”...

  • Page 14: Indicator Lights

    INSTRUMENT AND CONTROL FUNCTIONS 1. Neutral indicator light “ ” 1. Reset knob 1. Lights switch 2. Turn indicator light “ ” 2. Tripmeter 2. Dimmer switch 3. High beam indicator light “ ” 3. Odometer 3. Turn signal switch 4.
  • Page 15 INSTRUMENT AND CONTROL FUNCTIONS EAU00127 EAU00143 Turn signal switch Start switch “ ” To signal a right-hand turn, push the The starter motor cranks the engine switch to “ ”. To signal a left-hand when pushing the start switch. turn, push the switch to “ ”.

  • Page 16: Clutch Lever

    INSTRUMENT AND CONTROL FUNCTIONS 1. Clutch lever 1. Shift pedal 1. Front brake lever EAU00152 EAU00157 EAU00158 Clutch lever Shift pedal Front brake lever The clutch lever is located on the left This motorcycle is equipped with a con- The front brake lever is located on the handlebar, and the ignition circuit cut- stant-mesh 5-speed transmission.

  • Page 17: Rear Brake Pedal

    INSTRUMENT AND CONTROL FUNCTIONS NOTE: This tank cap cannot be closed unless the key is in the lock. The key cannot be removed if the cap is not locked properly. EW000023 WARNING Be sure the cap is properly installed and locked in place before riding the 1.

  • Page 18: Fuel

    INSTRUMENT AND CONTROL FUNCTIONS EAU00185 OFF: closed position CAUTION: Always wipe off spilled fuel immedi- ately with a dry and clean soft cloth. Fuel may deteriorate painted surfac- es or plastic parts. EAU00191 Recommended fuel: 1. Filler tube 1. Arrow mark positioned over “OFF” Regular unleaded gasoline with a 2.

  • Page 19: Starter (Choke) Knob

    INSTRUMENT AND CONTROL FUNCTIONS ON: normal position RES: reserve position 1. Arrow mark positioned over “ON” 1. Arrow mark positioned over “RES” 1. Starter (choke) knob EAU03032 Starter (choke) knob With the lever in this position, fuel flows This indicates reserve. If you run out of Starting a cold engine requires a richer to the carburetor.

  • Page 20: Seat

    INSTRUMENT AND CONTROL FUNCTIONS 1. Bolt ( 2) 1. Seat holder 1. Lock 2. Projection 2. Open EAU01092 Seat To install the seat, insert the projection EAU00261 Helmet holder To remove the seat, remove the bolts. on the front of the seat into the holder To open the helmet holder, insert the and push down on the seat, then tight- key in the lock and turn it as shown.

  • Page 21: Rear Shock Absorber Adjustment

    CI-15E malfunction, return the motorcycle Hard Soft/Standard to a Yamaha dealer immediately for Adjusting position repair.

  • Page 22: Sidestand/Clutch Switch Operation Check

    WARNING Be sure to use the centerstand SIDESTAND SWITCH IS OK. during this inspection. If improper operation is noted, consult a Yamaha dealer. CD-08E TURN MAIN SWITCH TO “ON” AND THE ENGINE STOP SWITCH TO “ ”. TRANSMISSION IS IN GEAR AND SIDESTAND IS UP.

  • Page 23: Pre-Operation Checks

    EAU01114 P RE-OPERATION CHECKS Owners are personally responsible for their vehicle’s condition. Your motorcycle’s vital functions can start to deteriorate quickly and unexpectedly, even if it remains unused (for instance, if it is exposed to the elements). Any damage, fluid leak or loss of tire pressure could have serious consequences.
  • Page 24 PRE-OPERATION CHECKS ITEM CHECKS PAGE Center and sidestand • Check for smooth operation. 6-24 pivot • Lubricate if necessary. • Make sure that all nuts, bolts and screws are properly tightened. Chassis fasteners — • Tighten if necessary. • Check fuel level. Fuel 3-5 ~ 3-6 •...

  • Page 25: Operation And Important Riding Points

    Consult (Refer to page 3-10.) can be started only under one of the Yamaha dealer regarding any following conditions: control or function that you do The transmission is in neutral. not thoroughly understand. The sidestand is up, the transmis-...
  • Page 26 OPERATION AND IMPORTANT RIDING POINTS CF-31E TURN THE MAIN SWITCH TO "ON" AND THE ENGINE STOP SWITCH TO “ ”. IF THE TRANSMISSION IS IN NEUTRAL AND THE IF THE TRANSMISSION IS IN GEAR AND THE SIDESTAND IS DOWN, SIDESTAND IS UP, PUSH START SWITCH.

  • Page 27: Starting A Warm Engine

    7. After warming up the engine, turn the light does not come on, ask a the first time. off the starter (choke) completely. Yamaha dealer to inspect it. NOTE: 4. Turn on the starter (choke) and The engine is warm when it responds completely close the throttle grip.

  • Page 28: Shifting

    OPERATION AND IMPORTANT RIDING POINTS EC000048 EAU02941 Recommended shift points CAUTION: (for Switzerland only) Do not coast for long periods The recommended shift points are with the engine off, and do not shown in the table below. tow the motorcycle a long dis- CF-25E tance.

  • Page 29: Tips For Reducing Fuel Consumption

    OPERATION AND IMPORTANT RIDING POINTS EAU00424 EAU00436 Tips for reducing fuel Engine break-in consumption There is never a more important period in the life of your motorcycle than the Your motorcycle’s fuel consumption period between zero and 1,000 km. For depends to a large extent on your this reason we ask that you carefully riding style.

  • Page 30: Parking

    Do not operate it at EW000058 during the break-in period, consult a one set throttle position. WARNING Yamaha dealer immediately. The exhaust system is hot. Park the 150 ~ 500 km motorcycle in a place where pedes- Avoid...

  • Page 31: Periodic Maintenance And Minor Repair

    If you do not have necessary tools re- brication will keep your motorcycle in quired during a service operation, take the safest and most efficient condition your motorcycle to a Yamaha dealer for possible. Safety is an obligation of the service. motorcycle owner. The maintenance...

  • Page 32: Periodic Maintenance And Lubrication Chart

    The annual checks must be performed every year, except if a kilometer-based maintenance is performed instead. From 30,000 km, repeat the maintenance intervals starting from 6,000 km. Items marked with an asterisk should be performed by a Yamaha dealer as they require special tools, data and technical skills.
  • Page 33 PERIODIC MAINTENANCE AND MINOR REPAIR ODOMETER READING ( 1,000 km) ANNUAL ITEM CHECK OR MAINTENANCE JOB CHECK • Check runout, spoke tightness and for damage. Wheels • Tighten spokes if necessary. • Check tread depth and for damage. • Replace if necessary. Tires •...
  • Page 34 PERIODIC MAINTENANCE AND MINOR REPAIR ODOMETER READING ( 1,000 km) ANNUAL ITEM CHECK OR MAINTENANCE JOB CHECK Lights, signals and • Check operation. switches • Adjust headlight beam. EAU03541 NOTE: The air filter needs more frequent service if you are riding in unusually wet or dusty areas. Hydraulic brake service •...

  • Page 35: Panel Removal And Installation

    PERIODIC MAINTENANCE AND MINOR REPAIR 1. Panel A 1. Panel B EAU01122 EAU00494* Panel removal and installation Panels A and B The panels illustrated need to be re- To remove moved to perform some of the mainte- Pull outward on the areas shown. nance described in this chapter.

  • Page 36: Spark Plug

    Do not attempt to diagnose such prob- lems yourself. Instead, take the motor- cycle to a Yamaha dealer. You should periodically remove and inspect the...
  • Page 37 PERIODIC MAINTENANCE AND MINOR REPAIR Tightening torque: Spark plug: 17.5 Nm (1.75 m·kg) NOTE: If a torque wrench is not available when you are installing a spark plug, a good estimate of the correct torque is 1/4 to 1/2 turn past finger tight. Have the a.

  • Page 38: Oil Level Inspection

    PERIODIC MAINTENANCE AND MINOR REPAIR 2. With the engine stopped, check the oil level through the level win- dow located at the lower part of the right side crankcase cover. NOTE: Wait a few minutes until the oil level settles before checking. 3.
  • Page 39 PERIODIC MAINTENANCE AND MINOR REPAIR EC000071* Recommended oil: CAUTION: See page 8-1. Before reinstalling the oil drain bolt, Oil quantity: do not forget to install the O-ring, Total amount: compression spring, and oil strainer 1.3 L in position. Periodic oil change: 1.0 L Tightening torque: With oil filter replacement:...

  • Page 40: Air Filter

    PERIODIC MAINTENANCE AND MINOR REPAIR 1. Air filter 1. Rubber gasket 2. Steel net EAU01094 EC000085 Air filter 4. Apply the recommended oil to the CAUTION: The air filter should be cleaned at the entire surface of the filter and Make sure the air filter is prop- specified intervals.

  • Page 41: Carburetor Adjustment

    A diagnostic tachometer must be used adjustment. Most adjustments should for this procedure. be left to a Yamaha dealer who has the 1. Attach the tachometer. Start the professional knowledge and experi- engine and warm it up for a few ence to do so.

  • Page 42: Throttle Cable Free Play Adjustment

    To prevent this, the cam chain tensioner must be adjusted regularly. This adjustment, however, should be left to a professional Yamaha service technician. a. Free play 1. Adjusting nut 2. Locknut EAU00634 Throttle cable free play 1.

  • Page 43: Valve Clearance Adjustment

    Always check and adjust the tire pres- * Load is the total weight of cargo, rider, passenger and accessories. Yamaha service technician. sure before operating the motorcycle. EW000082 WARNING Tire inflation pressure should be...
  • Page 44 CYCLE. Make sure the total weight the side wall is cracked, contact a of the cargo, rider, passenger, and Yamaha dealer immediately and have accessories (fairing, saddlebags, the tire replaced. etc. if approved for this model) does...

  • Page 45: Wheels

    Brakes, tires, and related wheel If any abnormal condition exists in parts replacement should be a wheel, consult a Yamaha dealer. left to a Yamaha Service Techni- Do not attempt even small repairs cian. to the wheel. If a wheel is de-...

  • Page 46: Clutch Lever Free Play Adjustment

    PERIODIC MAINTENANCE AND MINOR REPAIR NOTE: If proper adjustment cannot be ob- tained or the clutch does not work cor- rectly, ask a Yamaha dealer to inspect the internal clutch mechanism. 1. Locknut 1. Locknut 2. Adjusting bolt 2. Adjusting bolt c.

  • Page 47: Rear Brake Pedal Height And Free Play Adjustment

    Have a Yamaha dealer inspect and EW000104 WARNING bleed the system if necessary. It is advisable to have a Yamaha dealer make this adjustment. 6-17...

  • Page 48: Brake Light Switch Adjustment

    PERIODIC MAINTENANCE AND MINOR REPAIR 1. Adjusting nut 1. Battery cover 1. Brake light switch 2. Screw 2. Adjusting nut Free play 3. Hold the switch body so it does not EAU01646 The free play at the end of the brake Brake light switch adjustment rotate while turning the adjusting pedal should be approximately 20 ~...

  • Page 49: Checking The Front Brake Pads And Rear Brake Shoes

    EAU01119 Front brake If the indicator reaches the wear limit Wear indicator grooves are provided line, ask a Yamaha dealer to replace on each brake pad. These indicators the shoes. allow checking of brake pad wear with- out disassembling the brake. Inspect the grooves.

  • Page 50: Inspecting The Brake Fluid Level

    The brake fluid should be replaced only seals may deteriorate, causing by trained Yamaha service personnel. leakage and poor brake perfor- Have the Yamaha dealer replace the mance. following components during periodic maintenance or when they are dam- Recommended brake fluid: DOT 4...

  • Page 51: Drive Chain Slack Check

    PERIODIC MAINTENANCE AND MINOR REPAIR 1. Inspection window 1. USABLE RANGE 2. Too tight EAU00746 3. Too loose Drive chain slack check 4. Chain slack is correct if the full end NOTE: of the chain link can be seen in the Spin the wheel several times and find usable range as shown in illustra- the tightest position of the chain.

  • Page 52: Drive Chain Slack Adjustment

    PERIODIC MAINTENANCE AND MINOR REPAIR 4. Tighten the wheel axle nut to the specified torque. Tightening torque: Wheel axle nut: 65 Nm (6.5 m·kg) 5. Adjust the brake pedal free play. EW000103 WARNING 1. Adjusting nut 1. Axle nut 2. Chain adjusting plate Check the operation of the brake EAU01533 Drive chain slack adjustment...

  • Page 53: Drive Chain Lubrication

    Then, spray any of the many a suitable all-purpose grease. a cable does not operate smoothly, ask brands of spray-type chain lubricant a Yamaha dealer to replace it. between both rows of side plates and on all center rollers. Recommended lubricant:...

  • Page 54: Brake And Shift Pedal Lubrication

    PERIODIC MAINTENANCE AND MINOR REPAIR EAU02984 EAU02985 EAU02965 Brake and shift pedal Brake and clutch lever Center and sidestand lubrication lubrication lubrication Lubricate the pivoting parts. Lubricate the pivoting parts. Lubricate the pivoting and mating joints. Recommended lubricant: Recommended lubricant: Check to see that the center and side- Engine oil Engine oil...

  • Page 55: Front Fork Inspection

    3. Push down hard on the handle- bars several times and check if the fork rebounds smoothly. EC000098 CAUTION: If any damage or unsmooth move- ment is found with the front fork, consult a Yamaha dealer. 6-25...

  • Page 56: Steering Inspection

    If electrolyte level is low. any free play can be felt, ask a Yamaha dealer to inspect and adjust the steer- ing. Inspection is easier if the front wheel is removed.
  • Page 57 PERIODIC MAINTENANCE AND MINOR REPAIR EC000099 EW000116 Replenishing the battery fluid CAUTION: WARNING A poorly maintained battery will cor- When inspecting the battery, be Battery electrolyte is poisonous and rode and discharge quickly. The bat- dangerous, causing severe burns, sure the breather hose is routed cor- tery fluid should be checked at least etc.

  • Page 58: Battery Storage

    Install a properly connected and is not new fuse of proper amperage. Turn on damaged or obstructed. the switches and see if the electrical device operates. If the fuse immediate- ly blows again, consult a Yamaha deal- 6-28...

  • Page 59: Headlight Bulb Replacement

    4. Put a new bulb into position and cover. secure it in place with the bulb 5. Install the bulb holder cover, con- holder. nector and headlight unit. Ask a Yamaha dealer to adjust the headlight beam if that adjustment is necessary. 6-29...

  • Page 60: Turn Signal And Tail/Brake Light Bulb Replacement

    WARNING 1. Remove the screws and the lens. socket. It is advisable to have a Yamaha 2. Push the bulb inward and turn it 4. Install the lens and the screws. dealer service the wheel.

  • Page 61: Front Wheel Installation

    PERIODIC MAINTENANCE AND MINOR REPAIR 1. Wheel axle 2. Pinch bolt 4. Push down hard on the handle- EAU01394 Front wheel installation 3. Loosen the pinch bolt. bars several times to check for 1. Install the speedometer gear unit 4. Remove the wheel axle. Make proper fork operation.

  • Page 62: Rear Wheel Removal

    PERIODIC MAINTENANCE AND MINOR REPAIR EAU01116* Rear wheel removal EW000122 WARNING It is advisable to have a Yamaha dealer service the wheel. Securely support the motor- cycle so there is no danger of it falling over. 1. Adjusting nut 1. Axle nut 1.

  • Page 63: Rear Wheel Installation

    Then install a new procedure for making checks. cotter pin. If your motorcycle requires any repair, bring it to a Yamaha dealer. The skilled Specified torque: technicians at a Yamaha dealership Brake torque rod bolt: have the tools, experience, and know- 25 Nm (2.5 m·kg)

  • Page 64: Troubleshooting Chart

    Remove spark plug and check electrodes. Engine doesn’t start, go to battery Dry. Ask a Yamaha dealer to inspect. check. 4. Battery Engine turns over Battery good. quickly. Engine doesn’t start, ask a Yamaha Use the electric starter.

  • Page 65: Motorcycle Care And Storage

    EAU01518 M OTORCYCLE CARE AND STORAGE Care Before cleaning Cleaning 1. Cover up the muffler outlet with a After normal use The exposure of its technology makes plastic bag. Remove dirt with warm water, a neutral a motorcycle charming but also vulner- 2.
  • Page 66 MOTORCYCLE CARE AND STORAGE ECA00010 Do not use any harsh chemical For motorcycles equipped with CAUTION: products on plastic parts. Be a windshield: Do not use strong Avoid using strong acidic wheel sure to avoid using cloths or cleaners or hard sponges as cleaners, especially on spoked sponges which have been in they...
  • Page 67 MOTORCYCLE CARE AND STORAGE After riding in the rain, near the sea or After cleaning EWA00001 WARNING on salt-sprayed roads 1. Dry the motorcycle with a chamois Make sure that there is no oil or wax Since sea salt or salt sprayed on the or an absorbing cloth.

  • Page 68: Storage

    NOTE: “OFF” position: Turn the fuel cock To prevent corrosion, avoid Consult a Yamaha dealer for advice on to “OFF”. damp cellars, stables (because what products to use. 4. Fill up the fuel tank and add fuel...
  • Page 69 MOTORCYCLE CARE AND STORAGE a. Remove the spark plug cap and 6. Lubricate all control cables and 9. Remove the battery and fully spark plug. the pivoting points of all levers and charge it. Store it in a cool, dry b.

  • Page 70: Specifications

    S PECIFICATIONS EAU01038 Specifications Model SR125 Engine oil Dimensions Type -20˚ -10˚ 0˚ 10˚ 20˚ 30˚ 40˚ 50˚C Overall length 2,020 mm SAE 10W/30 Overall width 775 mm SAE 10W/40 Overall height 1,100 mm SAE 15W/40 Seat height 745 mm...

  • Page 71: Specifications

    SPECIFICATIONS Fuel Gear ratio Type Regular unleaded gasoline 2.250 Fuel tank capacity 10.0 L 1.476 Fuel reserve amount 1.6 L 1.125 Carburetor 0.926 Type quantity Y24P 0.793 Manufacturer TEIKEI Chassis Spark plug Frame type Diamond Manufacturer/Type NGK / DR8EA Caster angle 26°45 0.6 ~ 0.7 mm Trail...
  • Page 72 SPECIFICATIONS Maximum load* 160 kg Suspension Air pressure (cold tire) Front Up to 90 kg load* Type Telescopic fork Front 175 kPa (1.75 kg/cm , 1.75 bar) Rear Rear 200 kPa (2.00 kg/cm , 2.00 bar) Type Swingarm 90 kg load ~ maximum load* Shock absorbers Front 175 kPa (1.75 kg/cm...
  • Page 73 SPECIFICATIONS Bulb voltage, wattage quantity Headlight 12 V, 60/55 W Auxiliary light 12 V, 4 W Tail/brake light 12 V, 5/21 W Turn signal light 12 V, 21 W Meter light 14 V, 3 W Neutral indicator light 12 V, 1.7 W High beam indicator light 12 V, 1.7 W Turn indicator light...

  • Page 74: How To Use The Conversion Table

    SPECIFICATIONS EAU01064 HOW TO USE THE CONVERSION TABLE CS-02E CONVERSION TABLE All specification data in this manual are listed in SI and METRIC TO IMPERIAL METRIC UNITS. Metric unit Multiplier Imperial unit Use this table to convert METRIC unit data to IMPERIAL m·kg 7.233 ft·lb...

  • Page 75: Consumer Information

    Record the key identification number, vehicle identification number and mod- el label information in the spaces pro- vided for assistance when ordering spare parts from a Yamaha dealer or for reference in case the vehicle is sto- len. 1. Key identification number 1.

  • Page 76: Model Label

    The model label is affixed to the frame under the seat. (See page 3-8 for seat removal procedures.) Record the infor- mation on this label in the space pro- vided. This information will be needed to order spare parts from your Yamaha dealer.
  • Page 78 YAMAHA MOTOR CO., LTD. PRINTED ON RECYCLED PAPER PRINTED IN JAPAN 2001 · 2 - 0.3 1 CR...

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