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Yamaha a reputation for dependability. Please take the time to read this manual thoroughly, so as to enjoy all your TW125’s advan- tages. 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 others from trouble and injury.
EAU00009 TABLE OF CONTENTS GIVE SAFETY THE RIGHT OF WAY ....1-1 Sidestand ............3-11 Sidestand/clutch switch operation check..3-12 DESCRIPTION .............2-1 Left view............2-1 PRE-OPERATION CHECKS.........4-1 Right view ............2-2 Pre-operation check list ........4-1 Controls/Instruments ........2-3 OPERATION AND IMPORTANT RIDING INSTRUMENT AND CONTROL POINTS..............5-1 FUNCTIONS............3-1 Starting the engine ..........5-1 Main switch ............3-1...
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TABLE OF CONTENTS Carburetor adjustment ........6-14 Battery.............6-30 Idle speed adjustment ........6-14 Fuse replacement...........6-31 Throttle cable free play inspection ....6-15 Headlight bulb replacement......6-32 Valve clearance adjustment ......6-15 Turn signal and taillight bulb Tires..............6-16 replacement............6-33 Wheels ............6-18 Supporting the motorcycle ......6-34 Clutch lever free play adjustment....6-19 Front wheel removal........6-35 Front brake lever free play adjustment ..6-19 Front wheel installation .........6-36...
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EAU00021 Q 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 operat- ing condition.
EAU00027 INSTRUMENT AND CONTROL FUNCTIONS EAU00061 Neutral indicator light “N” This indicator comes on when the transmission is in neutral. 1. Turn indicator light “5” 2. High beam indicator light “&” EAU00028 3. Neutral indicator light “N” Main switch EAU00056 The main switch controls the igni- Indicator lights tion and lighting systems.
INSTRUMENT AND CONTROL FUNCTIONS NOTE: (for German model equipped with speed limiter only) This motorcycle is equipped with a speed limiter which prevents it from exceeding a top speed of 80 km/h. 1. Reset knob 1. Lights switch 2. Speedometer 2.
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INSTRUMENT AND CONTROL FUNCTIONS EAU00127 EAU00143 Turn signal switch Start switch “,“ To signal a right-hand turn, push starter motor cranks the switch to “6”. To signal a left- engine when pushing the start hand turn, push the switch to switch.
INSTRUMENT AND CONTROL FUNCTIONS 1. Clutch lever 1. Shift pedal 1. Front brake lever N. Neutral EAU00152 EAU00158 Clutch lever Front brake lever EAU00157 Shift pedal The clutch lever is located on the The front brake lever is located on This motorcycle is equipped with a left handlebar, and the ignition cir- the right handlebar.
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 sure properly 1. Rear brake pedal 1. Fuel tank cap installed locked place...
INSTRUMENT AND CONTROL FUNCTIONS EAU00185 Always wipe off spilled fuel imme- diately with a dry and clean soft cloth. Fuel may deteriorate painted surfaces or plastic parts. EAU00191 1. Filler tube Recommended fuel: 2. Fuel level Regular unleaded gasoline EAU01183 with a research octane Fuel number of 91 or higher.
INSTRUMENT AND CONTROL FUNCTIONS Off position Normal position Reserve position FUEL FUEL FUEL 1. Arrow mark positioned over “OFF” 1. Arrow mark positioned over “ON” 1. Arrow mark positioned over “RES” EAU01121 Fuel cock With the lever in this position, fuel This indicates reserve.
INSTRUMENT AND CONTROL FUNCTIONS To unlock the steering Insert the key, push it in and turn it 1/8 turn counterclockwise so that it moves out. Then, release and remove the key. 1. Starter (choke) “1” 1. Steering lock 2. Cover EAU02976 Starter (choke) “1”...
INSTRUMENT AND CONTROL FUNCTIONS 1. Bolt ( 1. Projection 1. Helmet holder 2. Seat holder EAU01092 EAU00260 Seat Helmet holder To install the seat, insert the pro- To remove the seat, remove the To open the helmet holder, insert jection on the front of the seat into bolts.
8 Do not deform or damage the cylinder in any way. Cylinder damage will result in poor damping performance. 8 Take your shock absorber to a Yamaha dealer for any service. 3-10...
Please check carefully the operating instructions listed below and if there is any indication of a malfunction, return the motor- cycle to a Yamaha dealer immedi- ately for repair. 3-11...
EW000045 TURN THE MAIN SWITCH TO “ON” AND THE ENGINE STOP SWITCH TO If improper operation is noted, “#”. consult a Yamaha dealer immedi- ately. TRANSMISSION IS IN GEAR AND SIDESTAND IS UP. PULL IN CLUTCH LEVER AND PUSH THE START SWITCH.
EAU01114 PRE-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. Therefore, it is very important that, in addition to a thorough visual inspection, you check the following points before each ride.
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PRE-OPERATION CHECKS ITEM CHECKS PAGE 9 Check fuel level. Fuel tank 3-5 ~ 3-7 9 Fill with fuel if necessary. Lights, signals and 9 Check for proper operation. 6-32 ~ 6-34 switches 9 Check fluid level. Battery 6-30 ~ 6-31 9 Fill with distilled water if necessary.
Consult The engine can be started only Yamaha dealer regarding any under one of the following condi- control or function that you do tions: not thoroughly understand. 8 The transmission is in neutral.
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OPERATION AND IMPORTANT RIDING POINTS TURN THE MAIN SWITCH TO “ON” AND THE ENGINE STOP SWITCH TO “#”. IF THE TRANSMISSION IS IN NEUTRAL AND IF THE TRANSMISSION IS IN GEAR AND THE THE SIDESTAND IS DOWN, PUSH START SIDESTAND IS UP, PULL IN THE CLUTCH SWITCH.
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10 seconds should be on. If the light does not on any one attempt. come on, ask a Yamaha dealer to inspect it. 6. After starting the engine, move starter (choke) 4.
OPERATION AND IMPORTANT RIDING POINTS EAU01258 EC000048 Starting a warm engine The starter (choke) is not required 8 Do not coast for long periods when the engine is warm. with the engine off, and do EC000046 not tow the motorcycle a long distance.
If any engine trouble should occur 8 Turn off the engine instead of during the break-in period, consult letting it idle for an extended a Yamaha dealer immediately. length of time, i.e. in traffic jams, at traffic lights or rail- road crossings.
OPERATION AND IMPORTANT RIDING POINTS FUEL 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 The exhaust system is hot. Park the motorcycle in a place where pedestrians or children are not likely to touch the motorcycle.
If you are not familiar with motor- motorcycle in the safest and most cycle service, this work should be efficient condition possible. Safety done by a Yamaha dealer. is an obligation of the motorcycle owner. The maintenance and lubri- cation schedule chart should be...
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Yamaha dealer for service. EW000063 Modifications to this motorcycle not approved by Yamaha may cause loss of performance, and render it unsafe for use. Consult a Yamaha dealer before attempting any changes.
PERIODIC MAINTENANCE AND MINOR REPAIR EAU00473 PERIODIC MAINTENANCE AND LUBRICATION Every Every 6,000 km 12,000 km INITIAL ITEM CHECKS AND MAINTENANCE JOBS 1,000 km 6 months 12 months (Whichever (Whichever comes first) comes first) 9 Check fuel hoses for cracks or damage. 1 * Fuel line 9 Replace if necessary.
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PERIODIC MAINTENANCE AND MINOR REPAIR Every Every 6,000 km 12,000 km INITIAL ITEM CHECKS AND MAINTENANCE JOBS 1,000 km 6 months 12 months (Whichever (Whichever comes first) comes first) 9 Check bearing for looseness or damage. 11 * Wheel bearings 9 Replace if necessary.
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Engine oil filter element 9 Clean or replace if necessary. 9 Clean or replace if necessary. 24 * Engine oil strainer *: Since these items require special tools, data and technical skills, they should be serviced by a Yamaha dealer. EAU02970 NOTE: 8 The air filter needs more frequent service if you are riding in unusually wet or dusty areas.
PERIODIC MAINTENANCE AND MINOR REPAIR 1. Panel B 1. Panel A 1. Panel A 2. Cowling C 2. Screw ( 2) EAU01139 Cowling and panel removal EAU01492 Panel A and installation To remove The cowlings and panels illustrated Remove the screws and pull out- need to be removed to perform ward on the area shown.
PERIODIC MAINTENANCE AND MINOR REPAIR 1. Panel B EAU00494 To install To install Panel B Place the panel in the original posi- Place the panel in its original posi- To remove tion and install the screws. tion. Pull outward on the areas shown.
To remove problems yourself. Instead, take 1. Remove the spark plug cap. Remove the cowling screw and the motorcycle to a Yamaha deal- 2. Use the spark plug wrench in pull outward on the areas shown. er. You should periodically remove...
PERIODIC MAINTENANCE AND MINOR REPAIR EAU00517* Tightening torque: Engine oil Spark plug: Oil level measurement 17.5 Nm (1.75 m·kg) 1. Place the motorcycle on a level place and hold it in an upright position. Warm up the engine NOTE: for several minutes. If a torque wrench is not available when you are installing a spark NOTE:...
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PERIODIC MAINTENANCE AND MINOR REPAIR 1. Maximum level mark 1. Engine oil filler cap 1. Engine oil drain bolt 2. Minimum level mark Engine oil replacement 3. Remove the drain bolts. 2. With engine stopped, 1. Warm up the engine for a few check the oil level through the minutes.
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PERIODIC MAINTENANCE AND MINOR REPAIR 1. Strainer 1. Bolts ( 3) 1. Oil filter element 2. Compression spring 2. Engine oil drain bolt 2. O-ring 3. O-ring 4. Remove the filter cover screws NOTE: EC000070 and the oil filter cover. The oil filter cover is secured by 5.
PERIODIC MAINTENANCE AND MINOR REPAIR EC000071 Recommended oil: See page 8-1. Before reinstalling the oil drain Total amount: bolt, do not forget to install the O- 1.3 L ring, compression spring, and oil Periodic oil change: strainer in position. 1.0 L With oil filter replacement: 1.1 L Tightening torque:...
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PERIODIC MAINTENANCE AND MINOR REPAIR 1. Air filter element 1. Hose 2. Air filter element frame 6. Install the air filter frame onto Air filter case drain hose cleaning 3. Remove the air filter from the the air filter and install the Frequently check the hose at the case.
A diagnostic tachometer must be cated adjustment. Most adjust- used for this procedure. ments should be left to a Yamaha dealer who has the professional 1. Attach the tachometer. Start knowledge and experience to do the engine and warm it up for so.
This adjustment however, free play. should be left to a professional 3. Tighten the locknut. Yamaha service technician. 1. Adjusting nut 2. Locknut c. Free play EAU00634 Throttle cable free play...
PERIODIC MAINTENANCE AND MINOR REPAIR EAU00652 EW000083 Maximum load* 180 kg Tires Cold tire pressure Front Rear To ensure maximum performance, Proper loading of your motorcycle 150 kPa 150 kPa long service and safe operation, Up to 80 kg (1.50 kg/cm , (1.50 kg/cm is important for several character- 1.50 bar)
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After extensive tests, the tires BRIDGESTONE 130/80-18 66P TW31 mentioned below have been REAR approved by Yamaha Motor Co., Manufacture Size Type Ltd. for this model. No guarantee BRIDGESTONE 180/80-14M/C 78P TW34 for handling characteristics can be Minimum tire tread given if tire combinations other 1.6 mm...
Check for cracks, Have excessively worn tires bends warpage replaced by a Yamaha dealer wheel. Be sure the spokes are immediately. Brakes, tires, and tight and undamaged. If any related wheel parts replace-...
PERIODIC MAINTENANCE AND MINOR REPAIR 1. Locknut 1. Locknut 1. Locknut 2. Adjusting bolt 2. Adjusting nut 2. Adjusting bolt c. Free play c. Free play If the specified free play cannot be EAU00694 EAU00696 obtained, proceed with the follow- Clutch lever free play Front brake lever free play ing steps.
EW000104 trol and an accident. Have a Yamaha dealer inspect and It is advisable to have a Yamaha bleed the system if necessary. dealer make this adjustment. Pedal height The brake pedal should be posi-...
Brake light switch proper adjustment, consult a The rear brake pedal free play adjustment Yamaha dealer. should be adjusted to 20 ~ 30 mm The rear brake light switch is acti- at the brake pedal end. Turn the vated by the brake pedal and is...
EAU01119 If the indicator reaches the wear Front brake causing the brakes to become inef- limit line, ask a Yamaha dealer to Wear indicator grooves are provid- fective. replace the shoes. ed on each brake pad. These indi-...
Yamaha service causing leakage poor fluid immediately. personnel. Have the Yamaha deal- 8 Have a Yamaha dealer check brake performance. er replace the following compo- the cause if the brake fluid nents during periodic maintenance Recommended brake fluid: level goes down.
PERIODIC MAINTENANCE AND MINOR REPAIR To check the chain slack the motor- cycle must be held straight up with both wheels on the ground and without rider. Check the slack at the position shown in the illustra- tion. Normal slack is approximately 35 ~ 60 mm.
PERIODIC MAINTENANCE AND MINOR REPAIR EC000096 EAU01106* EC000097 Drive chain lubrication The chain consists of many parts Too little chain slack will overload Be sure to oil the chain after wash- which work with each other. If the the engine and other vital parts. ing the motorcycle or riding in the chain is not maintained properly, it Keep the slack within the specified...
Lubricate the cables and cable Throttle cable and grip ends. If a cable does not operate lubrication smoothly, ask a Yamaha dealer to The throttle twist grip assembly replace it. should be greased at the time that the cable is lubricated, since the...
Lubricate the pivoting parts. point and metal-to-metal contact surfaces. Check that the sidestand Recommended lubricant: Recommended lubricant: moves up and down smoothly. Engine oil Engine oil Recommended lubricant: Engine oil EW000113 If the sidestand does not move smoothly, consult a Yamaha deal- 6-27...
3. Push down hard on the han- dlebars several times check if the fork rebounds smoothly. EC000098 If any damage or unsmooth move- ment is found with the front fork, consult a Yamaha dealer. 6-28...
Hold the lower end of the front forks and try to move them forward and backward. If any free play can be felt, ask a Yamaha dealer to inspect and adjust the steering. Inspection is easier if the front wheel is removed.
PERIODIC MAINTENANCE AND MINOR REPAIR EW000116 Battery electrolyte is poisonous and dangerous, causing severe burns, etc. It contains sulfuric acid. Avoid contact with skin, eyes or clothing. ANTIDOTE: 8 EXTERNAL: Flush with water. 1. Battery 1. Maximum level mark 8 INTERNAL: Drink large quanti- 2.
PERIODIC MAINTENANCE AND MINOR REPAIR EC000103 Do not use fuses of higher amper- age rating than those recommend- ed. Substitution of a fuse of improper rating can cause exten- sive electrical system damage and possibly a fire. 1. Bolt ( 2) 1.
8. If the headlight beam adjust- lens. ment necessary, EW000119 Yamaha dealer to make that Keep flammable products and your adjustment. hands away from a bulb while it is on, as it is hot. Do not touch a bulb until it cools down.
PERIODIC MAINTENANCE AND MINOR REPAIR EAU01579 Supporting the motorcycle Since the Yamaha TW125 has no centerstand, follow these precau- tions when removing the front and rear wheel or performing other maintenance requiring the motor- cycle to stand upright. Check that...
Front wheel removal when the disc and caliper are sepa- EW000122 rated. 8 It is advisable to have a Yamaha dealer service the wheel. 8 Securely support the motorcy- cle so there is no danger of it falling over. 1. Remove...
Make sure the projections are meshed into the slots. 8 It is advisable to have a 2. Lift up the wheel between the Yamaha dealer service the front fork legs. Make sure that wheel. there is enough gap between...
PERIODIC MAINTENANCE AND MINOR REPAIR 3. Turn the chain adjusting plates 4. Tighten the axle nut to the on each side fully in direction specified torque. Tightening torque: 4. Elevate the rear wheel. Axle nut: 5. Remove the axle nut. 90 Nm (9.0 m·kg) 6.
If your motorcycle requires any repair, bring it to a Yamaha dealer. skilled technicians Yamaha dealership have the tools, experience, know-how properly service your motorcycle.
2. Compression There is compression. Go to ignition check. Use the electric starter. No compression. Ask a Yamaha dealer to inspect. 3. Ignition Wipe clean with dry cloth and Open throttle half-way and start Wet. Remove spark correct spark gap or replace plug.
EAU01518 MOTORCYCLE CARE AND STORAGE Before cleaning Cleaning Care 1. Cover up the muffler outlet After normal use The exposure of its technology with a plastic bag. Remove dirt with warm water, a makes a motorcycle charming but 2. Make sure that all caps and neutral detergent and a soft clean also vulnerable.
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MOTORCYCLE CARE AND STORAGE 8 Improper cleaning can damage 8 Do high-pressure After riding in the rain, near the windshields, cowlings, panels washers or steam-jet cleaners sea or on salt-sprayed roads and other plastic parts. Use since they cause water seep- Since sea salt or salt sprayed on only a soft, clean cloth or age and deterioration in the...
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After cleaning 8. Let the motorcycle dry com- NOTE: 1. Dry the motorcycle with a pletely before storing it or cov- Consult Yamaha dealer chamois or an absorbing cloth. ering it. advice on what products to use. 2. Immediately drive...
MOTORCYCLE CARE AND STORAGE Long-term b. Pour a teaspoonful of engine Storage Before storing your motorcycle for oil into the spark plug bore. Short-term several months: c. Install the spark plug cap onto Always store your motorcycle in a 1. Follow all the instructions in the spark plug and place the cool, dry place and, if necessary, the “Care”...
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MOTORCYCLE CARE AND STORAGE 7. Check and, if necessary, cor- NOTE: rect the tire air pressure, then Make any necessary repairs before raise the motorcycle so that storing the motorcycle. both of its wheels are off the ground. Alternatively, turn the wheels a little every month in order to prevent the tires from becoming degraded in one...
SPECIFICATIONS EAU01064 HOW TO USE THE CONVERSION TABLE CONVERSION TABLE All specification data in this manual are listed in SI METRIC TO IMPERIAL and METRIC UNITS. Metric unit Multiplier Imperial unit Use this table to convert METRIC unit data to m •...
CONSUMER INFORMATION 1. Model label EAU01049 Model label The model label is affixed to the location shown figure. Record the information on this label in the space provided. This information will be needed to order spare parts from your Yamaha dealer.
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YAMAHA MOTOR CO., LTD. PRINTED ON RECYCLED PAPER PRINTED IN JAPAN 99·5–0.2 1(E)