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OWNER’S MANUAL MT-125 MOTORCYCLE Read this manual carefully before oper- ating this vehicle. MT125 MT125A BR3-F8199-E0...
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EAU46091 Read this manual carefully before operating this vehicle. This manual should stay with this vehicle if it is sold.
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If you have any further questions, do not hesitate to contact your Yamaha dealer. The Yamaha team wishes you many safe and pleasant rides. So, remember to put safety first! Yamaha continually seeks advancements in product design and quality. There-...
Important manual information EAU63350 Particularly important information is distinguished in this manual by the following notations: This is the safety alert symbol. It is used to alert you to potential personal injury haz- ards. Obey all safety messages that follow this symbol to avoid possible injury or death.
Table of contents Safety information ......1-1 Engine oil and oil filter element ..6-9 Coolant ......... 6-12 Description ........2-1 Replacing the air filter element Left view ..........2-1 and cleaning the check hose..6-14 Right view........2-2 Checking the engine idling Controls and instruments....2-3 speed.........
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Table of contents Replacing the license plate light bulb ........... 6-37 Supporting the motorcycle... 6-37 Front wheel (for non-ABS models) ........6-38 Rear wheel (for non-ABS models) ........6-39 Troubleshooting......6-41 Troubleshooting charts....6-42 Motorcycle care and storage..7-1 Matte color caution ......7-1 Care ..........
Safety information See page 4-1 for a list of pre-operation EAU1028B checks. This motorcycle is designed to Be a Responsible Owner carry the operator and a passen- As the vehicle’s owner, you are re- ger. sponsible for the safe and proper oper- ...
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Safety information Many accidents involve inexperi- • The passenger should always enced operators. In fact, many op- hold onto the operator, the seat erators who have been involved in strap or grab bar, if equipped, accidents do not even have a cur- with both hands and keep both rent motorcycle license.
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Safety information extra care when riding a motorcycle Avoid Carbon Monoxide Poisoning All engine exhaust contains carbon that has added cargo or accessories. monoxide, a deadly gas. Breathing Here, along with the information about carbon monoxide can cause head- accessories below, are some general aches, dizziness, drowsiness, nausea, guidelines to follow if loading cargo to confusion, and eventually death.
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Genuine before using it to make sure that it Yamaha accessories, which are avail- does not in any way reduce able only from a Yamaha dealer, have ground clearance or cornering been designed, tested, and approved clearance, limit suspension travel, by Yamaha for use on your vehicle.
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Safety information operator and may limit control torcycle, such as the frame or up- ability, therefore, such accesso- per front fork triple clamp (and not, ries are not recommended. for example, to rubber-mounted Use caution when adding electri- handlebars or turn signals, or cal accessories.
Instrument and control functions EAU10462 EAU10693 Main switch/steering lock LOCK The steering is locked, and all electrical systems are off. The key can be re- moved. To lock the steering The main switch/steering lock controls the ignition and lighting systems, and is used to lock the steering.
RESET SELECT gine is not working correctly. If this oc- ZAUM1316 1. Turn signal indicator light “ ” curs, have a Yamaha dealer check the 2. Neutral indicator light “ ” self-diagnosis system. 3. High beam indicator light “ ”...
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Instrument and control functions The ABS may not work correctly. If any come on to indicate that the function is of the above occurs, have a Yamaha activated or the light will go off to indi- dealer check the system as soon as cate that the function is deactivated.
Instrument and control functions a speedometer EAUM3422 Multi-function meter unit a tachometer a clock FTRIP x1000r/min a fuel meter km/h km/L/100km a coolant temperature meter an odometer and tripmeter display RESET SELECT a multi-function display ...
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Instrument and control functions To set the clock Tachometer 1. Turn the key to “ON”. 2. Push the “SELECT” button for at least two seconds. x1000r/min 3. When the hour digits start flash- ing, use the “RESET” button to set the hours.
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3 seconds repeatedly. If this diator. occurs, have a Yamaha dealer check If the engine overheats, see page the electrical circuit. 6-43 for further instruction.
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Instrument and control functions ODO (odometer) → TRIP 1 (tripmeter) Multi-function display → TRIP 2 (tripmeter) → ODO (odome- ter) F TRIP km/L ZAUM1307 1. Multi-function display ZAUM1306 The multi-function display is equipped 1. Odometer/tripmeter/fuel reserve tripmeter with the following: ...
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Instrument and control functions “km/L”: The distance that can be SPEED/__km/h”, the oil service re- minder “DIST SERV/__km” in the fol- traveled on 1.0 L of fuel under the lowing order: current riding conditions is shown. “L/100 km”: The amount of fuel C Ave__._km/L →...
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Instrument and control functions “AVE_ _._ MPG” (for the UK only): two seconds. The average speed dis- The average distance that can be play will also reset automatically 4 traveled on 1.0 Imp.gal of fuel is hours after the key was last turned to shown.
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If the low battery indicator comes on If the engine oil is changed before the have a Yamaha dealer check the bat- oil change indicator comes on (i.e. be- tery. fore the set oil service interval has been...
If the display indicates any error codes, note the code number, and then have a ZAUM1163 Yamaha dealer check the vehicle. 1. Engine stop switch “ ” 2. Start switch “ ”...
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Instrument and control functions the multi-function meter unit and page EAU12461 Turn signal switch “ ” 3-3 for information on the tachometer To signal a right-hand turn, push this high-rpm warning light.) switch to “ ”. To signal a left-hand turn, push this switch to “...
Instrument and control functions EAU12822 EAU12872 Clutch lever Shift pedal ZAUM1200 1. Clutch lever 1. Shift pedal The clutch lever is located on the left The shift pedal is located on the left side of the handlebar. To disengage side of the motorcycle and is used in the clutch, pull the lever toward the combination with the clutch lever when handlebar grip.
Instrument and control functions EAU12892 EAU12944 Brake lever Brake pedal ZAUM1202 ZAUM1201 1. Brake lever 1. Brake pedal The brake lever is located on the right The brake pedal is located on the right side of the handlebar. To apply the side of the motorcycle.
This ABS has a test mode which EAU60021 ABS (for ABS models) allows the owner to experience The Yamaha ABS (Anti-lock Brake the pulsation at the brake lever or System) features a dual electronic con- brake pedal when the ABS is op- trol system, which acts on the front and erating.
Instrument and control functions EAUM2082 EAU13213 Fuel tank cap Fuel Make sure there is sufficient gasoline in the tank. EWA10882 WARNING Gasoline and gasoline vapors are extremely flammable. To avoid fires and explosions and to reduce the risk of injury when refueling, follow these instructions.
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Your Yamaha engine has been de- signed to use premium unleaded gas- oline with a research octane number of 95 or higher. If knocking (or pinging)
Instrument and control functions EAU13434 EAUM2461 Catalytic converter Rider seat This model is equipped with a catalytic converter in the exhaust system. To remove the rider seat 1. Insert the key into the seat lock, EWA10863 WARNING and then turn it clockwise. The exhaust system is hot after op- eration.
Instrument and control functions EAU66730 Ignition circuit cut-off system The ignition circuit cut-off system (comprising the sidestand switch, clutch switch and neutral switch) has the following functions. It prevents starting when the transmission is in gear and the sidestand is up, but the clutch le- ver is not pulled.
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Does the engine start? The neutral switch may not be working correctly. The motorcycle should not be ridden until checked by a Yamaha dealer. With the engine still running: 6. Move the sidestand up. 7. Keep the clutch lever pulled.
Do not operate the vehicle if you find any problem. If a problem cannot be corrected by the procedures provided in this manual, have the vehicle inspected by a Yamaha dealer. Before using this vehicle, check the following points:...
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• Check operation. — signals and switches • Correct if necessary. • Check operation of ignition circuit cut-off system. Sidestand switch • If system is not working correctly, have Yamaha dealer 3-19 check vehicle. • Check fluid level. Battery 6-31...
This model is equipped with a lean an- there is a control or function you do not gle sensor to stop the engine in case of understand, ask your Yamaha dealer. a turnover. In this case, the multi-func- EWA10272 tion display indicates error code 30, WARNING but this is not a malfunction.
The neutral indi- the clutch lever pulled and the cator light should come on. If not, sidestand up. ask a Yamaha dealer to check the See page 3-20 for more informa- electrical circuit. tion. 3. Start the engine by pushing the 1.
Operation and important riding points EAU16673 and drive train, which are not Shifting designed withstand shock of forced shifting. ZAUM1203 1. Shift pedal 2. Neutral position Shifting gears lets you control the amount of engine power available for starting off, accelerating, climbing hills, etc.
Operation and important riding points EAU16811 EAU16831 Tips for reducing fuel con- Engine break-in sumption There is never a more important period in the life of your engine than the period Fuel consumption depends largely on between 0 and 1000 km (600 mi). For your riding style.
From 30000 km (17500 mi), repeat the maintenance intervals starting from 6000 km (3500 mi). Items marked with an asterisk should be performed by a Yamaha dealer as they require special tools, data and technical skills. EAU69210...
Periodic maintenance and adjustment EAU69250 General maintenance and lubrication chart ODOMETER CHECK OR READING MAINTENANCE JOB ITEM X 1000 km X 1000 mi 10.5 14 √ √ • Clean. 1 * Air filter element √ √ • Replace. Air filter check √...
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Periodic maintenance and adjustment ODOMETER CHECK OR READING MAINTENANCE JOB ITEM X 1000 km X 1000 mi 10.5 14 • Check chain slack, alignment Every 1000 km (600 mi) and af- and condition. ter washing the motorcycle, rid- Drive chain •...
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Periodic maintenance and adjustment ODOMETER CHECK OR READING MAINTENANCE JOB ITEM X 1000 km X 1000 mi 10.5 14 Engine oil filter el- √ √ √ √ √ • Replace. ement • Check coolant level and vehicle √ √ √ √...
Periodic maintenance and adjustment To install the cowling EAU18782 Removing and installing cowl- Place the cowling in the original posi- ings tion, and then install the screws. The cowlings shown need to be re- moved to perform some of the mainte- Cowling B nance jobs described in this chapter.
Do not attempt to can reveal the condition of the engine. diagnose such problems yourself. In- stead, have a Yamaha dealer check To remove the spark plug the vehicle. 1. Remove the spark plug cap.
Periodic maintenance and adjustment To install the spark plug EAUM3491 Engine oil and oil filter ele- 1. Clean the surface of the spark ment plug gasket and its mating sur- The engine oil level should be checked face, and then wipe off any grime before each ride.
Periodic maintenance and adjustment 4. Place an oil pan under the engine to collect the used oil. 5. Remove the engine oil filler cap and the drain bolt along with the O-ring, compression spring, and engine oil strainer, to drain the oil from the crankcase.
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Periodic maintenance and adjustment NOTICE: Before installing the engine oil drain bolt, do not for- get to install the O-ring, com- pression spring, and oil strainer in position. [ECA10422] Tightening torques: Engine oil drain bolt: 32 Nm (3.2 m·kgf, 23 ft·lbf) 11.
Periodic maintenance and adjustment 13. Turn the engine off, and then EAU20071 Coolant check the oil level and correct it if The coolant level should be checked necessary. before each ride. In addition, the cool- 14. Reset the oil change indicator. ant must be changed at the intervals (See page 3-9.) specified in the periodic maintenance...
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If water has been added to the coolant, have a Yamaha dealer check the anti- freeze content of the coolant as soon as possible, otherwise the effectiveness of the coolant will be reduced.
Yamaha dealer. placed at the intervals specified in the periodic maintenance and lubrication Engine idling speed: chart. Have a Yamaha dealer replace 1350–1550 r/min the air filter element more frequently if you are riding in unusually wet or dusty areas. In addition, the air filter check hose must be frequently checked and cleaned if necessary.
Periodic maintenance and adjustment EAU48433 Adjusting the throttle grip free play ZAUM1208 1. Rubber cover 2. Adjusting nut 3. Locknut 1. Throttle grip free play 4. Tighten the locknut and then slide The throttle grip free play should mea- the rubber cover to its original po- sure 3.0–5.0 mm (0.12–0.20 in) at the sition.
Therefore, it must be adjusted by a Yamaha dealer is essential to maintain the tires in good at the intervals specified in the periodic condition at all times and replace them maintenance and lubrication chart.
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If the center tread depth reaches the specified limit, if the tire has a nail or glass fragments in it, or if the side- wall is cracked, have a Yamaha dealer replace the tire immediately. 1. Tire air valve 2.
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After extensive tests, only the tires list- the danger of bursting at super ed below have been approved for this high speeds. model by Yamaha. Brand-new tires can have a rel- atively poor grip on certain road surfaces until they have been “broken in”.
If any damage is found, have a Yamaha dealer replace the wheel. Do not attempt even the smallest repair to the wheel. A de- formed or cracked wheel must be replaced.
(b). 7. Tighten the locknut at the crank- Periodically check the brake lever free case. play and, if necessary, have a Yamaha 8. Tighten the locknut at the clutch dealer check the brake system. lever and then slide the rubber...
If necessary, adjust the Periodically check the brake pedal free rear brake light switch as follows, but play and, if necessary, have a Yamaha the front brake light switch should be dealer adjust it. adjusted by a Yamaha dealer.
Check each rear brake pad for damage and measure the lining thickness. If a brake pad is damaged or if the lining thickness is less than 1.5 mm (0.06 in), have a Yamaha dealer replace the brake pads as a set. ZAUM1180 1. Wear indicator groove...
Specified brake fluid: brake system for leakage. If the brake DOT 4 fluid level goes down suddenly, have a Yamaha dealer check the cause before EWA16011 WARNING further riding. Improper maintenance can result in loss of braking ability.
Periodic maintenance and adjustment EAU22733 EAU22762 Changing the brake fluid Drive chain slack Have a Yamaha dealer change the The drive chain slack should be brake fluid at the intervals specified in checked before each ride and adjusted the periodic maintenance and lubrica- if necessary.
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Periodic maintenance and adjustment Tightening torques: Axle nut: 85 Nm (8.5 m·kgf, 61 ft·lbf) Locknut: 16 Nm (1.6 m·kgf, 12 ft·lbf) 4. Make sure that the drive chain pullers are in the same position, the drive chain slack is correct, drive chain moves...
If a cable is wet areas. Service the drive chain as damaged or does not move smoothly, follows. have a Yamaha dealer check or re- place it. WARNING! Damage to the ECA10584 NOTICE outer housing of cables may result...
In levers should be checked before each addition, the cable should be lubricat- ride, and the lever pivots should be lu- ed by a Yamaha dealer at the intervals bricated if necessary. specified in the periodic maintenance Brake lever chart.
EWA10732 Lithium-soap-based grease WARNING If the sidestand does not move up and down smoothly, have a Yamaha dealer check or repair it. Otherwise, the sidestand could contact the ground and distract the operator, re- sulting in a possible loss of control.
The swingarm pivots must be lubricat- at the intervals specified in the periodic ed by a Yamaha dealer at the intervals maintenance and lubrication chart. specified in the periodic maintenance and lubrication chart.
Periodic maintenance and adjustment EAU23315 To check the electrolyte level Battery 1. Place the vehicle on a level sur- A poorly maintained battery will cor- face and hold it in an upright posi- rode and discharge quickly. The elec- tion. trolyte level, battery lead connections and breather hose routing should be Make sure that the vehicle is posi-...
Periodic maintenance and adjustment then place it in a cool, dry place. EAUM3461 Replacing the fuses NOTICE: When removing the The fuse boxes, which contains the battery, be sure the key is fuses for the individual circuits, are lo- turned to “OFF”, then discon- cated under the rider seat.
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3. Turn the key to “ON” and turn on 1 2 3 4 5 the electrical circuit in question to check if the device operates. 4. If the fuse immediately blows again, have a Yamaha dealer check the electrical system. ZAUM1231 1. Headlight fuse 2. Signaling system fuse 3.
Periodic maintenance and adjustment EAUM3501 Replacing the headlight bulb This model is equipped with a halogen bulb headlight. If the headlight bulb burns out, replace it as follows. ECA10651 NOTICE Take care not to damage the follow- ing parts: Headlight bulb ZAUM1220 1.
6. Install the headlight unit as shown, and then install the bolt on each side. Check the wire routing when headlight unit is installed in order to avoid wire pinching and coupler disconnection. ZAUM1224 7. Have a Yamaha dealer adjust the headlight beam if necessary. 6-35...
1. Remove the turn signal light lens If the tail/brake light does not come on, by removing the screw. have a Yamaha dealer check it. 1. Screw 2. Remove the burnt-out bulb by pushing it in and turning it coun- terclockwise.
Periodic maintenance and adjustment EAUM3510 EAU24351 Replacing the license plate Supporting the motorcycle light bulb Since this model is not equipped with a centerstand, follow these precautions 1. Remove the license plate light unit when removing the front and rear by removing the screw.
Periodic maintenance and adjustment EAU44792 Front wheel (for non-ABS models) EWA14841 WARNING For the ABS model, have a Yamaha dealer remove and install the wheel. EAU56531 ZAUM1192 1. Brake caliper bolt 2. Brake caliper To remove the front wheel EWA10822 2.
EWA14841 7. Retighten the wheel axle pinch WARNING bolt A to the specified torque. For the ABS model, have a Yamaha 8. Tighten the brake caliper bolts to dealer remove and install the wheel. the specified torques. Tightening torques:...
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Periodic maintenance and adjustment To install the rear wheel 1. Install the wheel and the brake cal- iper bracket by inserting the wheel axle from the left-hand side. Make sure that the slot in the brake caliper bracket is fit over the retainer on the swingarm.
The following troubleshooting charts represent quick and easy procedures for checking these vital systems your- self. However, should your motorcycle require any repair, take it to a Yamaha dealer, whose skilled technicians have the necessary tools, experience, and know-how to service the motorcycle properly.
2. Compression There is compression. Check the ignition. Operate the electric starter. There is no Have a Yamaha dealer check the vehicle. compression. Wipe off with a dry cloth and correct the 3. Ignition Operate the electric spark plug gap, or starter.
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Start the engine. If the engine overheats again, The coolant level is have a Yamaha dealer check and repair the cooling system. If coolant is not available, tap water can be temporarily used instead, provided that it is changed to the recommended coolant as soon as possible.
Rust and corrosion can develop matte colored finished parts. Be even if high-quality components are sure to consult a Yamaha dealer for used. A rusty exhaust pipe may go un- advice on what products to use be- noticed on a car, however, it detracts fore cleaning the vehicle.
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Motorcycle care and storage fected area any longer than in- scratching. Some cleaning structed. Also, thoroughly rinse compounds for plastic may the area off with water, immedi- leave scratches on the wind- ately dry it, and then apply a cor- shield.
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Consult a Yamaha dealer for ad- 4. To prevent corrosion, it is recom- vice on what products to use. mended to apply a corrosion pro- ...
Motorcycle care and storage head so that the electrodes are EAU43204 Storage grounded. (This will limit spark- ing during the next step.) Short-term d. Turn the engine over several Always store your motorcycle in a cool, times with the starter. (This will dry place and, if necessary, protect it coat the cylinder wall with oil.) against dust with a porous cover.
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Motorcycle care and storage Make any necessary repairs before storing the motorcycle.
Index ABS (for ABS models) ......3-15 Identification numbers ......9-1 ABS warning light (for ABS models)..3-2 Ignition circuit cut-off system ....3-20 Air filter element and check hose, Indicator lights and warning lights ..3-2 replacing and cleaning....... 6-14 Info switch ..........
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Index Valve clearance........6-16 Vehicle identification number ....9-1 Wheel bearings, checking.....6-30 Wheel, front (for non-ABS models) ..6-38 Wheel, rear (for non-ABS models) ..6-39 Wheels ..........6-19 10-2...
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Original instructions MBK Industrie Z.I. de Rouvroy 02100 Saint Quentin PRINTED IN FRANCE 2015.09 (E)