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OWNER’S MANUAL YZF-R125 MOTORCYCLE Read this manual carefully before oper- ating this vehicle. YZF-R125A BR6-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-...
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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 Checking the spark plug....6-9 Engine oil and oil filter element ..6-11 Description ........2-1 Coolant ......... 6-14 Left view ..........2-1 Replacing the air filter element Right view........2-2 and cleaning the check hose..6-15 Controls and instruments....2-3 Checking the engine idling speed.........
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Table of contents Replacing a turn signal light bulb ........... 6-36 Replacing the license plate light bulb ........... 6-37 Supporting the motorcycle... 6-37 Troubleshooting......6-38 Troubleshooting charts....6-39 Motorcycle care and storage..7-1 Matte color caution ......7-1 Care ..........7-1 Storage ...........
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.
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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 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.
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 “ ”...
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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”.
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.
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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.
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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”...
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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.
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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”...
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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. ...
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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.
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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 “ ”...
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.
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.) ZAUM1164 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.
Instrument and control functions EAU12872 EAU12892 Shift pedal Brake lever ZAUM1165 ZAUM1166 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.
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...
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.
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...
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 more than a few minutes.
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.
Therefore, check this system regularly and have a Yamaha dealer repair it if it does not function properly. 3-20...
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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 3-20 check vehicle. • Check fluid level. Battery 6-32...
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. ZAUM1167 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. EAU71060...
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.
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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 operation and for exces- √ √ √ √ sive play. Swingarm pivot 13 * bearings • Lubricate with lithium-soap- Every 24000 km (14000 mi) based grease.
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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 •...
Periodic maintenance and adjustment EAU18732 Removing and installing the cowlings and panel ZAUM1170 1. Screw 2. Cowling A ZAUM1169 1. Cowling A To install the cowling 2. Cowling B Place the cowling in the original posi- 3. Cowling C tion, and then install the screws. 4.
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Periodic maintenance and adjustment 2. Fit the projection on the cowling into the slot, and then slide the cowling backward. 3. Install the screws. 4. Install cowling A and panel A. Cowling C To remove the cowling ZAUM1173 Remove the screws, and then pull the 1.
Periodic maintenance and adjustment EAU19633 Checking the spark plug The spark plug is an important engine component, which is easy to check. Since heat and deposits will cause any spark plug to slowly erode, the spark plug should be removed and checked in accordance with the periodic main- tenance and lubrication chart.
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Spark plug: ating improperly. Do not attempt to 12.5 Nm (1.25 m·kgf, 9.04 ft·lbf) diagnose such problems yourself. In- stead, have a Yamaha dealer check the vehicle. If a torque wrench is not available when installing a spark plug, a good 2.
Periodic maintenance and adjustment EAUM3491 Engine oil and oil filter ele- ment The engine oil level should be checked before each ride. In addition, the oil must be changed and the oil filter ele- ment replaced at the intervals specified in the periodic maintenance and lubri- cation chart.
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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 13. Turn the engine off, and then engine oil drain bolt, do not for- check the oil level and correct it if get to install the O-ring, com- necessary. pression spring, and oil strainer 14.
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.
WARNING! Never attempt to remove periodic maintenance and lubrication the radiator cap when the engine is chart. Have a Yamaha dealer replace hot. [EWA10382] the air filter element more frequently if you are riding in unusually wet or dusty areas.
Check the engine idling speed and, if Measure the throttle grip free play as necessary, have it corrected by a shown. Yamaha dealer. Engine idling speed: 1350–1550 r/min ZAUM1177 1. Throttle grip free play Throttle grip free play: 3.0–5.0 mm (0.12–0.20 in)
The valve clearance changes with use, resulting in improper air-fuel mixture and/or engine noise. To prevent this from occurring, the valve clearance must be adjusted by a Yamaha dealer at the intervals specified in the periodic maintenance and lubrication chart. ZAUM1178 1.
The tires must be checked before each ride. 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. 6-18...
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EWA10472 their suitability for further use. WARNING EWA10902 Have a Yamaha dealer replace WARNING excessively worn tires. Besides The front and rear tires should being illegal, operating the vehi- be of the same make and de-...
130/70-17 M/C 62H(PIRELLI)- ride. If any damage is found, have 62S(MICHELIN) Manufacturer/model: a Yamaha dealer replace the PIRELLI/SPORT DEMON wheel. Do not attempt even the MICHELIN/PILOT STREET smallest repair to the wheel. A de-...
Periodic maintenance and adjustment EAU22047 Adjusting the clutch lever free play Measure the clutch lever free play as shown. 1. Locknut 2. Clutch lever free play adjusting nut (crank- case) 6. To increase the clutch lever free play, turn the clutch lever free play 1.
2.0–5.0 mm (0.08–0.20 in) 3.5–4.5 mm (0.14–0.18 in) Periodically check the brake lever free Periodically check the brake pedal free play and, if necessary, have a Yamaha play and, if necessary, have a Yamaha dealer check the brake system. dealer adjust it.
The front and rear brake pads must be should come on just before braking checked for wear at the intervals spec- takes effect. If necessary, have a ified in the periodic maintenance and Yamaha dealer adjust the brake light lubrication chart. switches. EAU22421 Front brake pads ZAUM1466 1.
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 ZAUM1181 1. Minimum level mark brake pads as a set.
Clean the filler cap before re- EAU22733 Changing the brake fluid moving. Use only DOT 4 brake Have a Yamaha dealer change the fluid from a sealed container. brake fluid at the intervals specified in Use only the specified brake flu- the periodic maintenance and lubrica- id;...
3. Tighten the axle nut, then the lock- EAU3431A nuts to their specified torques. To adjust the drive chain slack Consult a Yamaha dealer before ad- justing the drive chain slack. 1. Loosen the axle nut and the lock- nut on each side of the swingarm.
Periodic maintenance and adjustment EAU23026 Tightening torques: Cleaning and lubricating the Axle nut: drive chain 85 Nm (8.5 m·kgf, 61 ft·lbf) The drive chain must be cleaned and Locknut: 16 Nm (1.6 m·kgf, 12 ft·lbf) lubricated at the intervals specified in the periodic maintenance and lubrica- 4.
Periodic maintenance and adjustment EAU23144 EAU23185 Checking and lubricating the Checking and lubricating the brake and clutch levers brake pedal The operation of the brake and clutch The operation of the brake pedal levers should be checked before each should be checked before each ride, ride, and the lever pivots should be lu- and the pedal pivot should be lubricat- bricated if necessary.
EAUM1653 Checking and lubricating the Lubricating the swingarm piv- sidestand The swingarm pivots must be lubricat- ed by a Yamaha dealer at the intervals specified in the periodic maintenance and lubrication chart. Recommended lubricant: Lithium-soap-based grease The operation of the sidestand should...
If any free over. play can be felt, have a Yamaha [EWA10752] 2. While applying the front brake, dealer check or repair the steer- push down hard on the handle- ing.
If there is play in the wheel skin, eyes or clothing and al- hub or if the wheel does not turn ways shield your eyes when smoothly, have a Yamaha dealer working near batteries. In case check the wheel bearings. of contact, administer the fol- lowing FIRST AID.
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Periodic maintenance and adjustment then place it in a cool, dry place. To check the electrolyte level NOTICE: When removing the 1. Place the vehicle on a level sur- face and hold it in an upright posi- battery, be sure the key is tion.
Backup fuse: 10.0 A 3. Turn the key to “ON” and turn on 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. 6-34...
If a headlight bulb This model is equipped with two auxil- burns out, have a Yamaha dealer re- iary lights. If an auxiliary light bulb place it and, if necessary, adjust the burns out, replace it as follows.
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 EAU67131 Replacing the license plate Supporting the motorcycle light bulb 1. Remove the license plate light unit by removing the screw. 1. Maintenance stand (example) Since this model is not equipped with a centerstand, use maintenance stands ZAUM1190 1.
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.
The ABS and Fuel Injection diagnostic mance data connectors are located as shown. Fuel-injection and emission-relat- ed data Yamaha will not disclose this data to a third party except: With the consent of the vehicle owner Where obligated by law ...