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Yamaha MT-125 2018 Owner's Manual
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Yamaha MT-125 2018 Owner's Manual

Yamaha MT-125 2018 Owner's Manual

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OWNER'S MANUAL
MT-125
MOTORCYCLE
Read this manual carefully before oper-
ating this vehicle.
MT125-A
BR3-F8199-E2

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Summary of Contents for Yamaha MT-125 2018

  • Page 1 OWNER’S MANUAL MT-125 MOTORCYCLE Read this manual carefully before oper- ating this vehicle. MT125-A BR3-F8199-E2...
  • Page 2 EAU46091 Read this manual carefully before operating this vehicle. This manual should stay with this vehicle if it is sold.
  • Page 3 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-...
  • Page 4 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.
  • Page 5 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.........
  • Page 6 Table of contents Replacing a turn signal light bulb ........... 6-36 Replacing the license plate light bulb ........... 6-36 Supporting the motorcycle... 6-37 Troubleshooting......6-37 Troubleshooting charts....6-38 Motorcycle care and storage..7-1 Matte color caution ......7-1 Care ..........7-1 Storage ...........
  • Page 7 Safety information an accident or equipment damage. EAU1028B See page 4-1 for a list of pre-operation checks. Be a Responsible Owner  This motorcycle is designed to As the vehicle’s owner, you are re- carry the operator and a passen- sponsible for the safe and proper oper- ger.
  • Page 8 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.
  • Page 9 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.
  • Page 10 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.
  • Page 11 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.
  • Page 12 Description EAU63371 Left view 1. Battery (page 6-31) 2. Owner’s tool kit (page 6-2) 3. Fuse box (page 6-32) 4. Shift pedal (page 3-14) 5. Engine oil drain bolt (page 6-9) 6. Coolant reservoir (page 6-12)
  • Page 13 Description EAU63391 Right view YAMAHA 1. Spark plug (page 6-8) 2. Front brake fluid reservoir (page 6-23) 3. Engine oil filter element (page 6-9) 4. Dipstick (page 6-9) 5. Rear brake fluid reservoir (page 6-23) 6. Brake pedal (page 3-15)
  • Page 14 Description EAU63401 Controls and instruments 1. Clutch lever (page 3-13) 2. Left handlebar switches (page 3-12) 3. Multi-function meter unit (page 3-4) 4. Main switch/steering lock (page 3-1) 5. Right handlebar switches (page 3-12) 6. Throttle grip (page 6-15) 7. Brake lever (page 3-14)
  • Page 15 Instrument and control functions EAU10462 EAU10696 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.
  • Page 16 Instrument and control functions From the “LOCK” position, push the EAU49399 Indicator lights and warning key and turn it to “OFF”. lights 1 2 3 x1000r/min FTRIP12 km/h km/L/100km RESET SELECT ZAUM1316 1. Turn signal indicator light “ ” 2. Neutral indicator light “ ”...
  • Page 17 The electrical circuit of the warning The ABS may not work correctly. If any light can be checked according to the of the above occurs, have a Yamaha following procedure. dealer check the system as soon as 1. Turn the key to “ON”.
  • Page 18 Instrument and control functions come on to indicate that the function is EAUM3423 Multi-function meter unit activated or the light will go off to indi- cate that the function is deactivated. FTRIP x1000r/min km/h km/L/100km RESET SELECT ZAUM1299 1. “INFO” switch 2.
  • Page 19 Instrument and control functions  For the UK: the multifunction me- Tachometer ter unit can be switched between kilometers and miles (see “Speed- ometer”). x1000r/min EWA12423 WARNING Be sure to stop the vehicle before making any setting changes to the multi-function meter unit.
  • Page 20 3 seconds, re- minutes. peatedly. If this occurs, have your 6. Push the “SELECT” button to con- Yamaha dealer check the vehicle. firm settings and start the clock. Coolant temperature meter When setting the hours and minutes, a brief push of the “RESET”...
  • Page 21 Instrument and control functions ECA10022 NOTICE Do not continue to operate the en- gine if it is overheating. F TRIP  Coolant temperature varies with changes in the weather and en- gine load. ZAUM1306  The radiator fan will automatically 1.
  • Page 22 Instrument and control functions Push the “INFO” button to switch be- Multi-function display tween the average fuel consumption mode “C Ave__._mpg”, the instanta- neous fuel consumption mode “C INS__._mpg”, the trip time mode “TRIP TIME _h __min”, the average speed “AVE SPEED/__mph”, and the oil change tripmeter (distance since last oil service) “DIST SERV/__km”...
  • Page 23 Instrument and control functions Average speed “AVE SPEED”  To reset the average fuel con- sumption, push the “RESET” but- ton for two seconds. However, the odometer and tripmeter display must be set to “ODO”, otherwise the tripmeter will be reset instead. ...
  • Page 24 Instrument and control functions Trip time meter “TRIP TIME” Oil change indicator “OIL” ZAUM1311 ZAUM1450 This function records the elapsed time This indicator flashes (“OIL SERV” of your current trip, or since it was last message will also appear) to indicate reset.
  • Page 25 Instrument and control functions 15 seconds. “OIL SERV” message and “INFO” button to switch between and the oil change tripmeter will also be re- check all messages in the following or- set. der: HIGH TEMP →LOW FUEL →LOW Low battery indicator “ ”...
  • Page 26 Instrument and control functions EAU1234K EAU12461 Handlebar switches Turn signal switch “ ” To signal a right-hand turn, push this Left switch to “ ”. To signal a left-hand turn, push this switch to “ ”. When released, the switch returns to the cen- ter position.
  • Page 27 Instrument and control functions the multi-function meter unit and page EAU12822 Clutch lever 3-3 for information on the tachometer high-rpm warning light.) 1. Clutch lever The clutch lever is located on the left side of the handlebar. To disengage the clutch, pull the lever toward the handlebar grip.
  • Page 28 Instrument and control functions EAU12872 EAU12892 Shift pedal Brake lever ZAUM1200 ZAUM1201 1. Shift pedal 1. Brake lever The shift pedal is located on the left The brake lever is located on the right side of the motorcycle and is used in side of the handlebar.
  • Page 29 Instrument and control functions EAU12944 EAU63040 Brake pedal The Yamaha ABS (Anti-lock Brake System) features a dual electronic con- trol system, which acts on the front and rear brakes independently. Operate the brakes with ABS as you would conventional brakes. If the ABS...
  • Page 30 ABS is op- erating. However, special tools are required, so please consult your Yamaha dealer. ECA20100 NOTICE Be careful not to damage the wheel sensor or wheel sensor rotor; other- 1.
  • Page 31 Instrument and control functions EAU13213 dry, soft cloth, since fuel may Fuel deteriorate painted surfaces or Make sure there is sufficient gasoline in plastic parts. [ECA10072] the tank. 4. Be sure to securely close the fuel EWA10882 tank cap. WARNING EWA15152 Gasoline and gasoline vapors are WARNING...
  • Page 32  Make sure that the exhaust sys- tem has cooled down before Your Yamaha engine has been de- doing any maintenance work. signed to use premium unleaded gas-  Do not allow the engine to idle oline with a research octane number of 95 or higher.
  • Page 33 Instrument and control functions EAUM2461 Rider seat Make sure that the rider seat is proper- ly secured before riding. To remove the rider seat 1. Insert the key into the seat lock, and then turn it clockwise. 1. Seat lock 2.
  • Page 34 Therefore, check this system regularly and have a Yamaha dealer repair it if it does not function properly. 3-20...
  • Page 35 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.
  • Page 36 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:...
  • Page 37 • 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 3-20 check vehicle. • Check fluid level. Battery 6-31...
  • Page 38 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.
  • Page 39 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.
  • Page 40 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.
  • Page 41 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.
  • Page 42 Yamaha dealer check the vehi- touch them and be burned. cle.  Do not park on a slope or on soft...
  • Page 43 If you are not familiar with vehicle ser- vice, have a Yamaha dealer perform service. EWA15123 WARNING Turn off the engine when performing...
  • Page 44 If you do not have the tools or experi- ence required for a particular job, have a Yamaha dealer perform it for you.
  • Page 45  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. EAU71060...
  • Page 46 X 1000 mi 10.5 14 • Perform dynamic inspection us- Diagnostic system √ √ √ √ √ √ ing Yamaha diagnostic tool. check • Check the error codes. √ √ • Clean. 2 * Air filter element √ √ • Replace.
  • Page 47 Periodic maintenance and adjustment ODOMETER CHECK OR READING MAINTENANCE JOB ITEM X 1000 km X 1000 mi 10.5 14 • Check operation and for exces- √ √ √ √ sive play. Swingarm pivot 13 * bearings • Lubricate with lithium-soap- Every 24000 km (14000 mi) based grease.
  • Page 48 Periodic maintenance and adjustment ODOMETER CHECK OR READING MAINTENANCE JOB ITEM X 1000 km X 1000 mi 10.5 14 At the initial interval and when • Change (warm engine before the oil change indicator flashes draining). or comes on Engine oil •...
  • Page 49 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.
  • Page 50 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.
  • Page 51 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.
  • Page 52 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.
  • Page 53 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 N·m (3.2 kgf·m, 23 lb·ft) 11.
  • Page 54 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 3-10.) specified in the periodic maintenance...
  • Page 55 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.
  • Page 56 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.
  • Page 57 Periodic maintenance and adjustment EAU48434 Adjusting the throttle grip free play Measure the throttle grip free play as shown. ZAUM1208 1. Rubber cover 2. Adjusting nut 3. Locknut 4. Tighten the locknut and then slide the rubber cover to its original po- 1.
  • Page 58 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.
  • Page 59 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.
  • Page 60 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”.
  • Page 61 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.
  • Page 62 (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...
  • Page 63 1. Brake pedal free play Brake pedal free play: 3.5–4.5 mm (0.14–0.18 in) Periodically check the brake pedal free play and, if necessary, have a Yamaha dealer adjust it. EWAM1031 WARNING An incorrect brake pedal free play indicates a hazardous condition in the brake system.
  • Page 64 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. ZAUM1466 1. Wear indicator groove...
  • Page 65 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.
  • Page 66 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.
  • Page 67 Periodic maintenance and adjustment Tightening torques: Axle nut: 85 N·m (8.5 kgf·m, 61 lb·ft) Locknut: 16 N·m (1.6 kgf·m, 12 lb·ft) 4. Make sure that the drive chain pullers are in the same position, the drive chain slack is correct, drive chain moves...
  • Page 68 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...
  • Page 69 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.
  • Page 70 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.
  • Page 71 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.
  • Page 72 If any free smoothly, have a Yamaha dealer play can be felt, have a Yamaha check the wheel bearings. dealer check or repair the steer- ing.
  • Page 73 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-...
  • Page 74 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.
  • Page 75 1. Remove the headlight unit by re- the electrical circuit in question to moving the bolts on each side. check if the device operates. 4. If the fuse immediately blows again, have a Yamaha dealer check the electrical system. 6-33...
  • Page 76 ZAUM1224 ZAUM1221 7. Have a Yamaha dealer adjust the 1. Headlight bulb cover headlight beam if necessary. 2. Headlight coupler 3. Remove the headlight bulb holder by turning it counterclockwise, and then remove the burnt-out bulb.
  • Page 77 This model is equipped with an LED- auxiliary lights. type tail/brake light. If an auxiliary light does not come on, If the tail/brake light does not come on, have a Yamaha dealer check it. have a Yamaha dealer check it. 6-35...
  • Page 78 Periodic maintenance and adjustment EAU24205 EAUM3510 Replacing a turn signal light Replacing the license plate bulb light bulb 1. Remove the turn signal light lens 1. Remove the license plate light unit by removing the screw. by removing the screw. ZAUM1190 1.
  • Page 79 1. Maintenance stand (example) self. However, should your motorcycle Since this model is not equipped with a require any repair, take it to a Yamaha centerstand, use maintenance stands dealer, whose skilled technicians have when removing the front or rear wheel...
  • Page 80 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.
  • Page 81 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.
  • Page 82 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.
  • Page 83 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.
  • Page 84  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- ...
  • Page 85 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.
  • Page 86 Motorcycle care and storage Make any necessary repairs before storing the motorcycle.
  • Page 87 Specifications Dimensions: Radiator (including all routes): 1.00 L (1.06 US qt, 0.88 Imp.qt) Overall length: Air filter: 1950 mm (76.8 in) Overall width: Air filter element: 745 mm (29.3 in) Dry element Overall height: Fuel: 1025 mm (40.4 in) Recommended fuel: Seat height: Premium unleaded gasoline (Gasohol [E10] 810 mm (31.9 in)
  • Page 88 Specifications Chassis: Rim size: 17xMT2.75 Frame type: Rear wheel: Semi double cradle Caster angle: Wheel type: 25.0 ° Cast wheel Trail: Rim size: 89 mm (3.5 in) 17 x MT3.75 Front tire: Front brake: Type: Type: Tubeless Hydraulic single disc brake Size: Specified brake fluid: 100/80-17 M/C 52H(PIRELLI)-...
  • Page 89 Specifications Brake/tail light: Front turn signal light: 10.0 W × 2 Rear turn signal light: 10.0 W × 2 Auxiliary light: License plate light: 5.0 W × 1 Meter lighting: Neutral indicator light: High beam indicator light: Turn signal indicator light: Fuel level warning light: Engine trouble warning light: ABS warning light:...
  • Page 90 Yamaha dealer or for reference in case the vehicle is stolen. EAU26471 Model label VEHICLE IDENTIFICATION NUMBER:...
  • Page 91 Privacy Policy. Privacy Policy https://www.yamaha-motor.eu/eu/ privacy/privacy-policy.aspx Yamaha will not disclose this data to a third party except in the following cas- es. In addition, Yamaha may provide vehicle data to a contractor in order to outsource services related to the han- dling of vehicle data.
  • Page 92 Index High beam indicator light ....... 3-2 Horn switch .......... 3-12 ABS............3-15 ABS warning light ........3-3 Air filter element and check hose, Identification numbers......9-1 replacing and cleaning .......6-14 Ignition circuit cut-off system....3-20 Auxiliary lights........6-35 Indicator lights and warning lights ..3-2 Info switch ..........
  • Page 93 Index Turn signal switch ........ 3-12 Valve clearance ........6-16 Vehicle identification number ....9-1 Wheel bearings, checking ....6-30 Wheels..........6-19 10-2...
  • Page 96 Original instructions MBK Industrie Z.I. de Rouvroy 02100 Saint Quentin SAS au capital de 14 000 000 € PRINTED IN FRANCE 2018.05 (E)

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Mt125-a 2018