Yamaha SR125 Owner'S Manual Download Page 37

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PERIODIC MAINTENANCE AND MINOR REPAIR

6-7

Installation

1. Measure the electrode gap with a

wire thickness gauge and, if nec-
essary, adjust the gap to specifica-
tion.

2. Clean the gasket surface. Wipe off

any grime from the threads.

3. Install the spark plug and tighten it

to the specified torque.

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
spark plug tightened to the specified
torque as soon as possible.

4. Install the spark plug cap.

a. Spark plug gap

Spark plug gap:

0.6 ~ 0.7 mm

Tightening torque:

Spark plug:

17.5 Nm (1.75 m·kg)

E_3mw.book Page 7 Monday, February 5, 2001 9:54 AM

Summary of Contents for SR125

Page 1: ...3MW 28199 E3 OWNER S MANUAL SR125 ...

Page 2: ...F_5eb_Toc0 fm Page 2 Wednesday February 2 2000 2 02 PM ...

Page 3: ...o 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 In addition the many tips given in this manual will help to keep your motorcycle in the best possible condition If you have any further questions do not hesitate to con tact your Yamaha dea...

Page 4: ...t be taken to avoid damage to the motorcycle NOTE A NOTE provides key information to make procedures easier or clearer NOTE 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 informa...

Page 5: ...IMPORTANT MANUAL INFORMATION EW000002 WARNING PLEASE READ THIS MANUAL CAREFULLY AND COMPLETELY BEFORE OPERATING THIS MOTORCYCLE E_3mw book Page 2 Monday February 5 2001 9 54 AM ...

Page 6: ...NUAL 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 E_3mw book Page 3 Monday February 5 2001 9 54 AM ...

Page 7: ...9 Sidestand 3 9 Sidestand clutch switch operation check 3 10 PRE OPERATION CHECKS 4 1 Pre operation check list 4 1 OPERATION AND IMPORTANT RIDING POINTS 5 1 Starting the engine 5 1 Starting a warm engine 5 3 Shifting 5 4 Recommended shift points for Switzerland only 5 4 Tips for reducing fuel consumption 5 5 Engine break in 5 5 Parking 5 6 PERIODIC MAINTENANCE AND MINOR REPAIR 6 1 Tool kit 6 1 Per...

Page 8: ...tion 6 23 Brake and shift pedal lubrication 6 24 Brake and clutch lever lubrication 6 24 Center and sidestand lubrication 6 24 Front fork inspection 6 25 Steering inspection 6 26 Wheel bearings 6 26 Battery 6 26 Fuse replacement 6 28 Headlight bulb replacement 6 29 Turn signal and tail brake light bulb replacement 6 30 Front wheel removal 6 30 Front wheel installation 6 31 Rear wheel removal 6 32 ...

Page 9: ...f even small amounts of alcohol there is a tendency to take dangerous risks Protective clothing is as essential for the motorcycle rider as seat belts are for car drivers and passengers Always wear a complete motorcycle suit whether made of leather or tear resistant synthetic materials with protectors sturdy boots motorcycle gloves and a properly fitting helmet Optimum protective wear however shou...

Page 10: ...ON Left view 1 Fuel tank cap page 3 5 2 Fuel cock page 3 6 3 Helmet holder page 3 8 4 Fuse box page 6 28 5 Sidestand page 3 9 6 Starter choke knob page 3 7 7 Shift pedal page 3 4 E_3mw book Page 1 Monday February 5 2001 9 54 AM ...

Page 11: ... 8 9 Rear shock absorber spring preload adjusting ring page 3 9 10 Tool kit page 6 1 11 Air filter page 6 10 12 Engine oil filler cap 13 Rear brake pedal page 3 5 14 Footrest 15 Battery page 6 26 E_3mw book Page 2 Monday February 5 2001 9 54 AM ...

Page 12: ...t handlebar switches page 3 2 3 Speedometer page 3 2 4 Front brake fluid reservoir page 6 20 5 Right handlebar switches page 3 3 6 Front brake lever page 3 4 7 Throttle grip page 6 12 8 Main switch steering lock page 3 1 E_3mw book Page 3 Monday February 5 2001 9 54 AM ...

Page 13: ...cked in this position and all electrical circuits are switched off The key can be removed in this po sition To lock the steering turn the handle bars all the way to the left While push ing the key into the main switch turn it from OFF to LOCK and remove it To release the lock turn the key to OFF while pushing EW000016 WARNING Never turn the key to OFF or LOCK when the motorcycle is moving The elec...

Page 14: ...an be reset to 0 with the reset knob Use the tripmeter to estimate how far you can ride on a tank of fuel This in formation will enable you to plan fuel stops in the future EAU00118 Handlebar switches EAU00134 Lights switch Turning the light switch to turns on the auxiliary light meter lights and taillight Turning the light switch to turns the headlight on also EAU00121 Dimmer switch Turn the swit...

Page 15: ...witch to sound the horn EAU00138 Engine stop switch The engine stop switch is a safety de vice for use in an emergency such as when the motorcycle overturns or if trouble occurs in the throttle system Turn the switch to to start the en gine In case of emergency turn the switch to to stop the engine EAU00143 Start switch The starter motor cranks the engine when pushing the start switch EC000005 CAU...

Page 16: ...oth clutch oper ation Refer to the engine starting pro cedures for a description of the ignition circuit cut off system EAU00157 Shift pedal This motorcycle is equipped with a con stant mesh 5 speed transmission The shift pedal is located on the left side of the engine and is used in com bination with the clutch when shifting EAU00158 Front brake lever The front brake lever is located on the right...

Page 17: ...e released and the cap can be opened To close Push the tank cap into position with the key inserted To remove the key turn it counterclockwise to the original posi tion 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 motorcycle 1...

Page 18: ...el may deteriorate painted surfac es or plastic parts EAU00191 NOTE If knocking or pinging occurs use a dif ferent brand of gasoline or higher oc tane grade EAU03050 Fuel cock The fuel cock supplies fuel from the tank to the carburetor while filtering it also The fuel cock has three positions OFF With the lever in this position fuel will not flow Always return the lever to this position when the e...

Page 19: ...oppor tunity Be sure to set the lever back to ON after refueling EAU03032 Starter choke knob Starting a cold engine requires a richer air fuel mixture which is supplied by the starter choke Move the knob in direction a to turn on the starter choke Move the knob in direction b to turn off the starter choke 1 Arrow mark positioned over ON ON normal position 1 Arrow mark positioned over RES RES reser...

Page 20: ...e that the seat is securely fit ted EAU00261 Helmet holder To open the helmet holder insert the key in the lock and turn it as shown To lock the helmet holder turn the key to its original position EW000030 WARNING Never ride with a helmet in the hel met holder The helmet may hit ob jects causing loss of control and possibly an accident 1 Bolt 2 1 Seat holder 2 Projection 1 Lock 2 Open E_3mw book P...

Page 21: ...ycle must not be ridden when the sidestand is down The sidestand is located on the left side of the frame Refer to page 5 1 for an explanation of this sys tem EW000044 WARNING This motorcycle must not be operat ed with the sidestand in the down position If the stand is not properly retracted it could contact the ground and distract the operator re sulting in a possible loss of control Yamaha has d...

Page 22: ...ure to use the centerstand during this inspection If improper operation is noted consult a Yamaha dealer CD 08E CD 08E TURN MAIN SWITCH TO ON AND THE ENGINE STOP SWITCH TO TRANSMISSION IS IN GEAR AND SIDESTAND IS UP PULL IN CLUTCH LEVER AND PUSH START SWITCH ENGINE WILL START SIDESTAND IS DOWN ENGINE WILL STALL SIDESTAND SWITCH IS OK CLUTCH SWITCH IS OK E_3mw book Page 10 Monday February 5 2001 9 ...

Page 23: ... brake fluid if necessary 6 16 6 20 Rear brake Check operation condition and free play Adjust if necessary Clutch Check operation condition and free play Adjust if necessary 6 16 Throttle grip and housing Check for smooth operation Lubricate if necessary 6 23 Engine oil Check oil level Fill with oil if necessary 6 8 6 9 Drive chain Check chain slack and condition Adjust if necessary 6 21 6 23 Whee...

Page 24: ...y have it inspected and repaired before operating the motorcycle Center and sidestand pivot Check for smooth operation Lubricate if necessary 6 24 Chassis fasteners Make sure that all nuts bolts and screws are properly tightened Tighten if necessary Fuel Check fuel level Fill with fuel if necessary 3 5 3 6 Lights signals and switches Check for proper operation 6 29 6 30 Battery Check fluid level F...

Page 25: ... ventila tion Before starting out always be sure the sidestand is up Failure to retract the sidestand com pletely can result in a serious accident when you try to turn a corner EAU03011 Starting the engine NOTE This motorcycle is equipped with an ig nition circuit cut off system The engine can be started only under one of the following conditions The transmission is in neutral The sidestand is up ...

Page 26: ...E SIDESTAND IS DOWN PUSH START SWITCH THE ENGINE WILL START RETRACT THE SIDESTAND AND PUT THE TRANSMISSION IN GEAR IF THE TRANSMISSION IS IN GEAR AND THE SIDESTAND IS UP PULL IN THE CLUTCH LEVER AND PUSH THE START SWITCH THE ENGINE WILL START THE MOTORCYCLE CAN BE RIDDEN THE MOTORCYCLE CAN BE RIDDEN E_3mw book Page 2 Monday February 5 2001 9 54 AM ...

Page 27: ...s then try again Each attempt should be as short as possible to preserve the bat tery Do not crank the engine more than 10 seconds on any one attempt 6 After starting the engine move the starter choke to the halfway posi tion NOTE For maximum engine life never accel erate hard with a cold engine 7 After warming up the engine turn off the starter choke completely NOTE The engine is warm when it res...

Page 28: ...ith gears in neu tral the transmission is only properly lubricated when the engine is running Inadequate lubrication may damage the transmission Always use the clutch when changing gears The engine transmission and driveline are not designed to withstand the shock of forced shifting and can be damaged by shifting without using the clutch EAU02941 Recommended shift points for Switzerland only The r...

Page 29: ...nstead of let ting it idle for an extended length of time i e in traffic jams at traffic lights or railroad crossings EAU00436 Engine break in There is never a more important period in the life of your motorcycle than the period between zero and 1 000 km For this reason we ask that you carefully read the following material Because the engine is brand new you must not put an excessive load on it fo...

Page 30: ...re to replace the engine oil 1 000 km and beyond Avoid prolonged full throttle operation Vary speed occasionally EC000049 CAUTION If any engine trouble should occur during the break in period consult a Yamaha dealer immediately EAU00457 Parking When parking the motorcycle stop the engine and remove the ignition key Turn the fuel cock to OFF whenever stopping the engine EW000058 WARNING The exhaust...

Page 31: ... motor cycle service this work should be done by a Yamaha dealer EAU01175 Tool kit The tool kit is located behind panel A See page 6 5 for panel removal and installation procedures The tools pro vided in the owner s tool kit are to as sist you in the performance of periodic maintenance However some other tools such as a torque wrench are also necessary to perform the maintenance correctly The serv...

Page 32: ...NNUAL CHECK 1 6 12 18 24 1 Fuel line Check fuel hoses for cracks or damage 2 Spark plug Check condition Clean and regap Replace 3 Valves Check valve clearance Adjust 4 Timing chain Check chain tension Adjust 5 Air filter element Clean Replace 6 Battery Check electrolyte level and specific gravity Make sure that the breather hose is properly routed 7 Clutch Check operation Adjust 8 Front brake Chec...

Page 33: ...ing play and steering for roughness Lubricate with lithium soap based grease Every 24 000 km 16 Chassis fasteners Make sure that all nuts bolts and screws are properly tightened 17 Sidestand centerstand Check operation Lubricate 18 Sidestand switch Check operation 19 Front fork Check operation and for oil leakage 20 Shock absorber assemblies Check operation and shock absorbers for oil leakage 21 C...

Page 34: ...rect the brake fluid level Every two years replace the internal components of the brake master cylinder and caliper and change the brake fluid Replace the brake hoses every four years and if cracked or damaged _ 26 Lights signals and switches Check operation Adjust headlight beam NO ITEM CHECK OR MAINTENANCE JOB ODOMETER READING 1 000 km ANNUAL CHECK 1 6 12 18 24 E_3mw book Page 4 Monday February ...

Page 35: ...ved to perform some of the mainte nance described in this chapter Refer to this section each time a panel has to be removed or reinstalled EAU00494 Panels A and B To remove Pull outward on the areas shown To install Place the panel in its original position 1 Panel A 1 Panel B E_3mw book Page 5 Monday February 5 2001 9 54 AM ...

Page 36: ... electrode is a medi um to light tan color for a motorcycle that is being ridden normally 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 spark plug because heat and deposits will cause any spark plug to slowly break down and erode If electrode ero sion becomes excessive or if carbon and other deposit...

Page 37: ...park plug and tighten it to the specified torque 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 spark plug tightened to the specified torque as soon as possible 4 Install the spark plug cap a Spark plug gap Spark plug gap 0 6 0 7 mm Tightening torque Spark plug 17 5 Nm 1 75 m kg E_3mw...

Page 38: ...ttles before checking 3 The oil level should be between the maximum level and minimum level marks If the level is low fill the engine with sufficient oil to raise it to the specified level Engine oil replacement and oil filter element cleaning 1 Warm up the engine for a few min utes 2 Stop the engine Place an oil pan under the engine and remove the oil filler cap 3 Remove the drain bolt and drain ...

Page 39: ...all the oil fill er cap and tighten EC000066 CAUTION Do not put in any chemical addi tives Engine oil also lubricates the clutch and additives could cause clutch slippage Be sure no foreign material en ters the crankcase 9 Start the engine and warm up for a few minutes While warming up check for oil leakage If oil leakage is found stop the engine immedi ately and check for the cause 10 Stop the en...

Page 40: ... and clean it with solvent After cleaning remove the remaining solvent by squeezing the air filter 4 Apply the recommended oil to the entire surface of the filter and squeeze out the excess oil It should be wet but not dripping 5 Install the air filter in its case 6 Install panel A EC000085 CAUTION Make sure the air filter is prop erly seated in the filter case The engine should never be run witho...

Page 41: ...1168 Idle speed adjustment NOTE A diagnostic tachometer must be used for this procedure 1 Attach the tachometer Start the engine and warm it up for a few minutes at approximately 1 000 to 2 000 r min Occasionally rev the engine to 4 000 to 5 000 r min The engine is warm when it quick ly responds to the throttle 2 Set the idle to the specified engine speed by adjusting the throttle stop screw Turn ...

Page 42: ...the locknut 2 Turn the adjusting nut in direction a to increase free play and in direction b to decrease free play 3 Tighten the locknut EAU00636 Cam chain adjustment The cam chain becomes loose with use resulting in improper valve timing and engine noise To prevent this the cam chain tensioner must be adjusted regularly This adjustment however should be left to a professional Yamaha service techn...

Page 43: ...sure before operating the motorcycle EW000082 WARNING Tire inflation pressure should be checked and adjusted when the temperature of the tire equals the ambient air temperature Tire infla tion pressure must be adjusted ac cording to total weight of cargo rider passenger and accessories fairing saddlebags etc if approved for this model and vehicle speed CE 32E Maximum load 160 kg Cold tire pressure...

Page 44: ...oved for this model does not exceed the maximum load of the motorcycle Operation of an over loaded motorcycle could cause tire damage an accident or even injury Tire inspection Always check the tires before operating the motorcycle If center tread depth reaches the limit as shown if the tire has a nail or glass fragments in it or if the side wall is cracked contact a Yamaha dealer immediately and ...

Page 45: ...rmance long service and safe operation note the following Always inspect the wheels before a ride Check for cracks bends or warpage of the wheel Be sure the spokes are tight and undamaged If any abnormal condition exists in a wheel consult a Yamaha dealer Do not attempt even small repairs to the wheel If a wheel is de formed or cracked it must be re placed Tires and wheels should be bal anced when...

Page 46: ...the locknut 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 EAU00696 Front brake lever free play adjustment The free play at the front brake lever should be 2 5 mm 1 Loosen the locknut 2 Turn the adjusting bolt in direction a to increase free play or in direction b to decrease free play 3 After adjust...

Page 47: ...ealer inspect and bleed the system if necessary EAU01105 Rear brake pedal height and free play adjustment EW000104 WARNING It is advisable to have a Yamaha dealer make this adjustment Pedal height The pedal height should be adjusted so that the top of brake pedal is aligned with the top of footrest 1 Loosen the locknut 2 Turn the adjusting bolt in direction a to raise the brake ped al or in direct...

Page 48: ...e light switch is activated by the brake pedal and is properly ad justed when the brake light comes on just before braking takes effect Adjust the brake light switch as follows 1 Remove panel A 2 Remove the battery cover by re moving the screw 3 Hold the switch body so it does not rotate while turning the adjusting nut 4 Turn the adjusting nut in direction a to make the brake light come on earlier...

Page 49: ...f brake pad wear with out disassembling the brake Inspect the grooves If they have almost disap peared ask a Yamaha dealer to re place the pads EAU00727 Rear brake Apply the brake and inspect the wear indicator If the indicator reaches the wear limit line ask a Yamaha dealer to replace the shoes 1 Wear indicator groove 2 2 Brake pads 1 Wear limit 2 Wear indicator E_3mw book Page 19 Monday February...

Page 50: ... brake fluid Mixing fluids may result in a harmful chemical reaction and lead to poor brake performance Be careful that water does not en ter the master cylinder when refill ing Water will significantly lower the boiling point of the fluid and may result in vapor lock Brake fluid may deteriorate paint ed surfaces or plastic parts Al ways clean up spilled fluid immediately Have a Yamaha dealer chec...

Page 51: ... the chain case by the following procedure 1 Place the motorcycle on the cen terstand 2 Put the transmission in neutral 3 While looking in the inspection window rotate the rear wheel 4 Chain slack is correct if the full end of the chain link can be seen in the usable range as shown in illustra tion 5 If any portion of the top or bottom of the chain link end is hidden ad just the chain 1 Inspection...

Page 52: ...djusting plate to exactly the same position to maintain correct axle alignment EC000096 CAUTION Too little chain slack will overload the engine and other vital parts Keep the slack within the specified limits 4 Tighten the wheel axle nut to the specified torque 5 Adjust the brake pedal free play EW000103 WARNING Check the operation of the brake light after adjusting the rear brake 1 Adjusting nut ...

Page 53: ...ry it and immediately lubricate it to prevent it from rusting EAU02962 Cable inspection and lubrication EW000112 WARNING Damage to the outer housing of ca bles may lead to internal rusting and interfere with the cable movement Replace damaged cables as soon as possible to prevent unsafe condi tions Lubricate the cables and cable ends If a cable does not operate smoothly ask a Yamaha dealer to repl...

Page 54: ...ver lubrication Lubricate the pivoting parts EAU02965 Center and sidestand lubrication Lubricate the pivoting and mating joints Check to see that the center and side stand move up and down smoothly Recommended lubricant Engine oil Recommended lubricant Engine oil Recommended lubricant Engine oil E_3mw book Page 24 Monday February 5 2001 9 54 AM ...

Page 55: ...over Check for scratches or damage on the inner tube and excessive oil leakage from the front fork Operation check 1 Place the motorcycle on a level place 2 Hold the motorcycle in an upright position and apply the front brake 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 co...

Page 56: ...ection is easier if the front wheel is removed EW000115 WARNING Securely support the motorcycle so there is no danger of it falling over EAU01144 Wheel bearings If there is play in the front or rear wheel hub or if the wheel does not turn smoothly have a Yamaha dealer in spect the wheel bearings EAU01647 Battery Remove panel A See page 6 5 for re moval and installation procedures Check the level o...

Page 57: ... minutes and get prompt medical attention Batteries produce explosive gases Keep sparks flame cigarettes etc away Ventilate when charging or using in an enclosed space Always shield your eyes when working near batteries KEEP OUT OF REACH OF CHIL DREN Replenishing the battery fluid A poorly maintained battery will cor rode and discharge quickly The bat tery fluid should be checked at least once a m...

Page 58: ...the breather hose is properly connected and is not damaged or obstructed EAU01307 Fuse replacement The fuse is located behind panel B See page 6 5 for panel removal and installation procedures If the fuse is blown turn off the main switch and the switch of the circuit in question Install a new fuse of proper amperage Turn on the switches and see if the electrical device operates If the fuse immedi...

Page 59: ... it is on as it is hot Do not touch the bulb until it cools down 4 Put a new bulb into position and secure it in place with the bulb holder ECA00040 CAUTION Avoid touching the glass part of the bulb Keep it free from oil other wise the transparency of the glass life of the bulb and luminous flux will be adversely affected If oil gets on the bulb thoroughly clean it with a cloth moistened with alco...

Page 60: ...nto the socket 4 Install the lens and the screws EC000108 CAUTION Do not over tighten the screws as the lens may break EAU00866 Front 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 Place the motorcycle on the cen terstand 2 Remove the speedometer cable from the front wheel side 1 S...

Page 61: ...Lift up the wheel between the front fork legs and guide the brake disc between the brake pads Make sure the slot in the speedometer gear unit fits over the stopper on the front fork outer tube 3 Install the wheel axle and let the motorcycle down 4 Push down hard on the handle bars several times to check for proper fork operation 5 Tighten the wheel axle to the specified torque 6 Install the pinch ...

Page 62: ...e cotter pin and nut Then remove the brake torque rod bolt from the brake shoe plate 3 Remove the brake adjusting nut and brake rod from the brake cam lever 4 Loosen the chain adjusting plates on each side 5 Remove the axle nut 6 Pull out the rear axle 7 Push the wheel forward and re move the drive chain 8 Remove the wheel assembly 1 Adjusting nut 2 Brake rod 3 Brake torque rod 4 Cotter pin 1 Axle...

Page 63: ...oubleshooting Although Yamaha motorcycles receive a rigid inspection before shipment from the factory trouble may occur during operation Any problem in the fuel compression or ignition systems can cause poor starting and loss of power The trouble shooting chart describes a quick easy procedure for making checks If your motorcycle requires any repair bring it to a Yamaha dealer The skilled technici...

Page 64: ...is compression No compression Go to ignition check Ask a Yamaha dealer to inspect Remove spark plug and check electrodes 3 Ignition Wet Dry Wipe clean with dry cloth and correct spark gap or replace spark plug Ask a Yamaha dealer to inspect Engine doesn t start ask a Yamaha dealer to inspect Engine doesn t start go to battery check Open throttle half way and start the engine Use the electric start...

Page 65: ...re cleaning 1 Cover up the muffler outlet with a plastic bag 2 Make sure that all caps and covers as well as all electrical couplers and connectors including the spark plug cap are tightly in stalled 3 Remove extremely stubborn dirt like oil burnt onto the crankcase with a degreasing agent and a brush but never apply such prod ucts onto seals gaskets sprock ets the drive chain and wheel axles Alwa...

Page 66: ...eaning products solvent or thinner fuel gasoline rust re movers or inhibitors brake flu id antifreeze or electrolyte Do not use high pressure wash ers or steam jet cleaners since they cause water seepage and deterioration in the following ar eas seals of wheel bearings swingarm bearings forks and brakes electric components couplers connectors instru ments switches and lights breather hoses and ven...

Page 67: ... chain and lubricate it to prevent it from rusting 3 Use a chrome polish to shine chrome aluminum and stainless steel parts including the exhaust system Even the thermally in duced discoloring of stainless steel exhaust systems can be re moved through polishing 4 To prevent corrosion it is recom mended to apply a corrosion pro tection spray on all even chrome and nickel plated metal surfaces 5 Use...

Page 68: ...umidi ty to seep in and cause rust To prevent corrosion avoid damp cellars stables because of the presence of ammonia and areas where strong chemi cals are stored Long term Before storing your motorcycle for several months 1 Follow all the instructions in the Care section of this chapter 2 Drain the carburetor float chamber by loosening the drain bolt this will prevent fuel deposits from building ...

Page 69: ... Lubricate all control cables and the pivoting points of all levers and pedals as well as of the sidestand centerstand 7 Check and if necessary correct the tire air pressure then raise the motorcycle so that both of its wheels are off the ground Alterna tively turn the wheels a little every month in order to prevent the tires from becoming degraded in one spot 8 Cover up the muffler outlet with a ...

Page 70: ...Electric starter Lubrication system Wet sump Engine oil Type Recommended engine oil classification API Service SE SF SG type or higher Quantity Periodic oil change 1 0 L With oil filter replacement 1 1 L Total amount 1 3 L Air filter Wet type element 20 10 0 10 20 30 40 50 C SAE 10W 30 SAE 15W 40 SAE 20W 40 SAE 20W 50 SAE 10W 40 CAUTION Be sure to use motor oils that do not contain anti friction m...

Page 71: ...ratio 3 318 Secondary reduction system Chain drive Secondary reduction ratio 3 500 Number of drive chain sprocket teeth rear front 49 14 Transmission type Constant mesh 5 speed Operation Left foot operation Gear ratio 1st 2 250 2nd 1 476 3rd 1 125 4th 0 926 5th 0 793 Chassis Frame type Diamond Caster angle 26 45 Trail 90 mm Tires Front Type With tube Size 3 00 17 45P Manufacturer model Inoue 8F Re...

Page 72: ...e 16 1 85 Brakes Front Type Single disc brake Operation Right hand operation Fluid DOT 4 or DOT 3 Rear Type Drum brake Operation Right foot operation Suspension Front Type Telescopic fork Rear Type Swingarm Shock absorbers Front Coil spring oil damper Rear Coil spring oil damper Wheel travel Front 120 mm Rear 76 mm Electrical system Ignition system C D I Charging system Type C D I magneto Standard...

Page 73: ...uxiliary light 12 V 4 W 1 Tail brake light 12 V 5 21 W 1 Turn signal light 12 V 21 W 4 Meter light 14 V 3 W 1 Neutral indicator light 12 V 1 7 W 1 High beam indicator light 12 V 1 7 W 1 Turn indicator light 12 V 1 7 W 1 Fuse 20 A E_3mw book Page 4 Monday February 5 2001 9 54 AM ...

Page 74: ...MPERIAL Metric unit Multiplier Imperial unit Torque m kg m kg cm kg cm kg 7 233 86 794 0 0723 0 8679 ft lb in lb ft lb in lb Weight kg g 2 205 0 03527 lb oz Speed km hr 0 6214 mph Distance km m m cm mm 0 6214 3 281 1 094 0 3937 0 03937 mi ft yd in in Volume Capacity cc cm3 cc cm3 lt liter lt liter 0 03527 0 06102 0 8799 0 2199 oz IMP liq cu in qt IMP liq gal IMP liq Misc kg mm kg cm2 Centigrade C ...

Page 75: ...01E EAU01041 Key identification number The key identification number is stamped on the key tag Record this number in the space provided and use it for reference when obtaining a new key EAU01043 Vehicle identification number The vehicle identification number is stamped into the steering head pipe Record this number in the space pro vided NOTE The vehicle identification number is used to identify y...

Page 76: ...xed 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 1 Model label E_3mw book Page 2 Monday February 5 2001 9 54 AM ...

Page 77: ...F_5eb_Toc0 fm Page 2 Wednesday February 2 2000 2 02 PM ...

Page 78: ...PRINTED IN JAPAN 2001 2 0 3 1 CR E PRINTED ON RECYCLED PAPER YAMAHA MOTOR CO LTD ...

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Yamaha SR125, Owner'S Manual

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