Read this manual carefully before operating this vehicle. OWNER’S MANUAL YZF-R125 5D7-F8199-E1...
EAU46090 Read this manual carefully before operating this vehicle. This manual should stay with this vehicle if it is sold.
Yamaha a reputation for dependability. Please take the time to read this manual thoroughly, so as to enjoy all advantages of your YZF-R125. 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.
IMPORTANT MANUAL INFORMATION EAU10132 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 hazards. Obey all safety messages that follow this symbol to avoid possible injury or death.
TABLE OF CONTENTS SAFETY INFORMATION ....1-1 Shifting ........... 5-2 Adjusting the brake pedal free Tips for reducing fuel play ........... 6-21 DESCRIPTION ........2-1 consumption ....... 5-3 Checking the front and rear brake Left view ..........2-1 Engine break-in ......5-3 pads .......... 6-21 Right view ........2-2 Parking ...........
TABLE OF CONTENTS Replacing the license plate light bulb ...........6-33 Replacing an auxiliary light bulb ...6-33 Supporting the motorcycle ....6-33 Front wheel ........6-34 Rear wheel ........6-36 Troubleshooting ......6-37 Troubleshooting charts ....6-38 MOTORCYCLE CARE AND STORAGE ..........7-1 Matte color caution ......7-1 Care ..........7-1 Storage ...........7-3 SPECIFICATIONS ......8-1...
SAFETY INFORMATION EAU10283 Safe Riding • Ride where other motorists can Perform the pre-operation checks each see you. Avoid riding in another time you use the vehicle to make sure it motorist’s blind spot. Be a Responsible Owner is in safe operating condition. Failure to Many accidents involve inexperi- As the vehicle’s owner, you are respon- inspect or maintain the vehicle properly...
SAFETY INFORMATION due to excessive speed or under- This motorcycle is designed for on- A passenger should also observe cornering (insufficient lean angle road use only. It is not suitable for the above precautions. for the speed). off-road use. • Always obey the speed limit and Avoid Carbon Monoxide Poisoning never travel faster than warrant- Protective apparel...
Yamaha accessories, which are avail- of the motorcycle is changed. To avoid to minimize imbalance or instabili- able only from a Yamaha dealer, have the possibility of an accident, use ex- been designed, tested, and approved treme caution when adding cargo or Shifting weights can create a sud- by Yamaha for use on your vehicle.
• Accessories fitted to the handle- Use caution when adding electri- genuine Yamaha accessories, recog- bar or the front fork area can cal accessories. If electrical acces- nize that some aftermarket accessories...
INSTRUMENT AND CONTROL FUNCTIONS EAU10460 EAU10661 To lock the steering Main switch/steering lock All electrical systems are off. The key can be removed. EWA10061 WARNING Never turn the key to “OFF” or “LOCK” while the vehicle is moving. Otherwise the electrical systems will be switched off, which may result in loss of control or an accident.
“ON”, Turn signal indicator light “ ” or if the warning light remains on, have This indicator light flashes when the a Yamaha dealer check the electrical turn signal switch is pushed to the left or circuit. right. ECA10021...
If this oc- The electric tachometer allows the rider EWA12312 curs, have a Yamaha dealer check the WARNING to monitor the engine speed and keep it self-diagnosis system. within the ideal power range.
INSTRUMENT AND CONTROL FUNCTIONS two tripmeters (which show the When approximately 1.6 L (0.42 US Fuel meter distance traveled since they were gal, 0.35 Imp.gal) of fuel remains in the last set to zero) fuel tank, the odometer display will au- a fuel reserve tripmeter (which tomatically change to the fuel reserve shows the distance traveled since...
INSTRUMENT AND CONTROL FUNCTIONS EAU12348 EAU12360 EAU12711 Handlebar switches Pass switch “PASS” Start switch “ ” Press this switch to flash the headlight. Push this switch to crank the engine Left with the starter. See page 5-1 for start- EAU12400 ing instructions prior to starting the en- Dimmer switch “...
INSTRUMENT AND CONTROL FUNCTIONS EAU12820 EAU12870 EAU12890 Clutch lever Shift pedal Brake lever 1. Clutch lever 1. Shift pedal 1. Brake lever The clutch lever is located at the left The shift pedal is located on the left The brake lever is located at the right handlebar grip.
INSTRUMENT AND CONTROL FUNCTIONS EAU12941 EAUM2081 Brake pedal Fuel tank cap The fuel tank cap cannot be installed unless the key is in the lock. In addition, the key cannot be removed if the cap is not properly installed and locked. EWA11141 WARNING Make sure that the fuel tank cap is...
Gasoline is poisonous and can fuel expands when it heats up, Your Yamaha engine has been de- cause injury or death. Handle gaso- heat from the engine or the sun signed to use premium unleaded gaso- line with care.
INSTRUMENT AND CONTROL FUNCTIONS brand. Use of unleaded fuel will extend EAU13445 ECA10701 Catalytic converters NOTICE spark plug life and reduce maintenance This vehicle is equipped with catalytic costs. Use only unleaded gasoline. The use converters in the exhaust system. of leaded gasoline will cause unre- EWA10862 pairable damage to the catalytic...
1. Insert the projection on the front of in a possible loss of control. the rider seat into the seat holder Yamaha’s ignition circuit cut-off as shown. system has been designed to assist the operator in fulfilling the respon- sibility of raising the sidestand be- fore starting off.
INSTRUMENT AND CONTROL FUNCTIONS below and have a Yamaha dealer re- EAU44892 Ignition circuit cut-off system pair it if it does not function proper- The ignition circuit cut-off system (com- prising the sidestand switch, clutch switch and neutral switch) has the fol- lowing functions.
INSTRUMENT AND CONTROL FUNCTIONS WARNING With the engine turned off: 1. Move the sidestand down. If a malfunction is noted, have a Yamaha 2. Make sure that the engine stop switch is set to “ ”. dealer check the system before riding.
• If necessary, add recommended coolant to specified level. 6-13 • Check cooling system for leakage. • Check operation. • If soft or spongy, have Yamaha dealer bleed hydraulic system. • Check brake pads for wear. Front brake • Replace if necessary.
• Make sure that operation is smooth. • Check cable free play. Throttle grip 6-16, 6-26 • If necessary, have Yamaha dealer adjust cable free play and lubricate cable and grip housing. • Make sure that operation is smooth. Control cables 6-25 •...
• Correct if necessary. • Check operation of ignition circuit cut-off system. Sidestand switch 3-10 • If system is not working correctly, have Yamaha dealer check vehicle. • Check fluid level. Battery 6-29 • Fill with distilled water if necessary.
(See page 5-2.) The properly lubricated only when neutral indicator light should come the engine is running. Inade- on. If not, ask a Yamaha dealer to quate lubrication may damage check the electrical circuit. the transmission. 1. Shift pedal 3.
0–500 km (0–300 mi) period, immediately have a Avoid prolonged operation above 6000 Yamaha dealer check the vehi- r/min. cle. After every hour of operation, stop the engine, and then let it cool for five to ten minutes.
OPERATION AND IMPORTANT RIDING POINTS EAU17213 Parking When parking, stop the engine, and then remove the key from the main switch. EWA10311 WARNING Since the engine and exhaust system can become very hot, park in a place where pedestri- ans or children are not likely to touch them and be burned.
If you are not familiar with vehicle ser- If you do not have the tools or experi- vice, have a Yamaha dealer perform ence required for a particular job, have service. a Yamaha dealer perform it for you.
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.
PERIODIC MAINTENANCE AND ADJUSTMENT EAU17717 General maintenance and lubrication chart ODOMETER READING ANNUAL ITEM CHECK OR MAINTENANCE JOB 1000 km 6000 km 12000 km 18000 km 24000 km CHECK (600 mi) (3500 mi) (7000 mi) (10500 mi) (14000 mi) √ √...
PERIODIC MAINTENANCE AND ADJUSTMENT ODOMETER READING ANNUAL ITEM CHECK OR MAINTENANCE JOB 1000 km 6000 km 12000 km 18000 km 24000 km CHECK (600 mi) (3500 mi) (7000 mi) (10500 mi) (14000 mi) • Check operation and for exces- √ √...
PERIODIC MAINTENANCE AND ADJUSTMENT ODOMETER READING ANNUAL ITEM CHECK OR MAINTENANCE JOB 1000 km 6000 km 12000 km 18000 km 24000 km CHECK (600 mi) (3500 mi) (7000 mi) (10500 mi) (14000 mi) • Check operation and for oil leak- √...
PERIODIC MAINTENANCE AND ADJUSTMENT ODOMETER READING ANNUAL ITEM CHECK OR MAINTENANCE JOB 1000 km 6000 km 12000 km 18000 km 24000 km CHECK (600 mi) (3500 mi) (7000 mi) (10500 mi) (14000 mi) Lights, signals and • Check operation. √ √...
PERIODIC MAINTENANCE AND ADJUSTMENT EAU18731 EAU18790 2. Remove the screws, slide the Removing and installing the Cowling A cowling forward, and then take it cowlings and panel off. To remove the cowling 3. Disconnect the turn signal light Remove the screws, and then take the lead coupler.
PERIODIC MAINTENANCE AND ADJUSTMENT EAU18852 2. Remove the screws and the quick Cowling C fasteners, and then take the cowl- To install the quick fasteners, push the ing off. To remove the cowling center pin out so that it will protrude Remove the screws, and then pull the from the fastener head, insert the fas- cowling off as shown.
If the spark plug shows a distinctly dif- ferent color, the engine could be oper- ating improperly. Do not attempt to diagnose such problems yourself. In- 1. Spark plug cap stead, have a Yamaha dealer check the vehicle.
PERIODIC MAINTENANCE AND ADJUSTMENT 2. Check the spark plug for electrode 2. Clean the surface of the spark plug EAUM2381 Engine oil and oil filter ele- erosion and excessive carbon or gasket and its mating surface, and ment other deposits, and replace it if then wipe off any grime from the The engine oil level should be checked necessary.
PERIODIC MAINTENANCE AND ADJUSTMENT 4. If the engine oil is below the mini- mum level mark, add sufficient oil The engine oil should be between the of the recommended type to raise minimum and maximum level marks. it to the correct level. 5.
PERIODIC MAINTENANCE AND ADJUSTMENT Tightening torques: Oil filter element cover bolt: 10 Nm (1.0 m·kgf, 7.2 ft·lbf) Make sure that the O-ring is properly seated. 10. Install the engine oil strainer, com- pression spring, O-ring and the en- 1. Engine oil drain bolt 1.
PERIODIC MAINTENANCE AND ADJUSTMENT 13. Turn the engine off, and then EAU20070 Recommended engine oil: Coolant check the oil level and correct it if See page 8-1. The coolant level should be checked necessary. Oil quantity: before each ride. In addition, the cool- Without oil filter element replace- ant must be changed at the intervals ment:...
Never nance and lubrication chart. Have a attempt to remove the radiator Yamaha dealer change the coolant. cap when the engine is hot. WARNING! Never attempt to remove NOTICE: If coolant is not...
Periodically check the obtained as described above, have a throttle cable free play and, if neces- 3. Tighten the locknut. Yamaha dealer make the adjustment. sary, adjust it as follows. 3. Install the panel. The engine idling speed must be cor- rectly adjusted before checking and ad- justing the throttle cable free play.
175 kPa (1.75 kgf/cm², 25 psi) Rear: from occurring, the valve clearance the specified tires. 200 kPa (2.00 kgf/cm², 29 psi) must be adjusted by a Yamaha dealer 90–185 kg (198–408 lb): at the intervals specified in the periodic Tire air pressure Front: maintenance and lubrication chart.
Tire information glass fragments in it, or if the sidewall is After extensive tests, only the tires list- cracked, have a Yamaha dealer re- ed below have been approved for this place the tire immediately. model by Yamaha Motor Co., Ltd.
(60 mi) after installing a new tire. Valve core: fore each ride. If any damage is V3002 (original) The tires must be warmed up found, have a Yamaha dealer re- Rear tire: before a high-speed run. Size: place the wheel. Do not attempt...
PERIODIC MAINTENANCE AND ADJUSTMENT EAU22043 7. Tighten the locknut at the crank- Adjusting the clutch lever free case. If the specified clutch lever free play play 8. Tighten the locknut at the clutch le- could be obtained as described above, ver and then slide the rubber cover skip steps 4–7.
Periodically check the brake le- shown. Periodically check the brake ver free play and, if necessary, have a pedal free play and, if necessary, have Yamaha dealer check the brake sys- a Yamaha dealer adjust it. tem. EWAM1030 WARNING...
Insufficient brake fluid may allow air to thickness is less than 1 mm (0.04 in), enter the brake system, possibly caus- have a Yamaha dealer replace the ing it to become ineffective. brake pads as a set. 6-22...
EAU22760 Changing the brake fluid Drive chain slack ter the brake fluid reservoir when Have a Yamaha dealer change the The drive chain slack should be refilling. Water will significantly brake fluid at the intervals specified in checked before each ride and adjusted...
PERIODIC MAINTENANCE AND ADJUSTMENT Using the alignment marks on each side of the swingarm, make sure that both drive chain pullers are in the same position for proper wheel alignment. 3. Tighten the axle nut, then the lock- nuts to their specified torques. Tightening torques: 1.
If a cable is damaged wet areas. Service the drive chain as or does not move smoothly, have a follows. Yamaha dealer check or replace it. WARNING! Damage to the outer ECA10583 NOTICE sheath may interfere with proper ca-...
The operation of the throttle grip should Brake pedal be checked before each ride. In addi- tion, the cable should be lubricated by a Yamaha dealer at the intervals speci- fied in the periodic maintenance chart. Shift pedal The operation of the brake and shift...
EWA10731 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- The operation of the brake and clutch sulting in a possible loss of control.
If any damage is found or the front face and hold it in an upright posi- fork does not operate smoothly, tion. WARNING! To avoid injury, have a Yamaha dealer check or re- securely support the vehicle so pair it. there is no danger of it falling over.
If any free working near batteries. In case play can be felt, have a Yamaha of contact, administer the fol- dealer check or repair the steering. lowing FIRST AID.
PERIODIC MAINTENANCE AND ADJUSTMENT Batteries produce explosive hy- To store the battery drogen gas. Therefore, keep 1. If the motorcycle will not be used The electrolyte should be between the sparks, flames, cigarettes, etc., for more than one month, remove minimum and maximum level marks.
7. Main fuse 4. If the fuse immediately blows The fuse box is located under the rider again, have a Yamaha dealer seat. (See page 3-10.) check the electrical system. If a fuse is blown, replace it as follows.
If a headlight bulb burns type tail/brake light. 1. Remove the turn signal light lens out, have a Yamaha dealer replace it If the tail/brake light does not come on, by removing the screw. and, if necessary, adjust the headlight have a Yamaha dealer check it.
PERIODIC MAINTENANCE AND ADJUSTMENT EAUM2202 EAU43231 EAU24350 Replacing the license plate Replacing an auxiliary light Supporting the motorcycle light bulb bulb Since this model is not equipped with a centerstand, follow these precautions 1. Remove the socket (together with This model is equipped with two auxil- when removing the front and rear the bulb) by pulling it out.
PERIODIC MAINTENANCE AND ADJUSTMENT a jack either under each side of the EAU24360 Front wheel frame in front of the rear wheel or under each side of the swingarm. EAUM2422 To remove the front wheel EWA10821 WARNING To avoid injury, securely support the vehicle so there is no danger of it falling over.
PERIODIC MAINTENANCE AND ADJUSTMENT 6. Pull the wheel axle out, remove the Tightening torques: speed sensor by pulling it out, and Wheel axle: Make sure that the projections on the then remove the wheel. NOTICE: 59 Nm (5.9 m·kgf, 43 ft·lbf) speed sensor rotor are aligned with the Front wheel axle pinch bolt: Do not apply the brake after the...
PERIODIC MAINTENANCE AND ADJUSTMENT EAU25080 4. Loosen the locknut on each side of NOTICE: Do not apply the brake Rear wheel the swingarm. after the wheel has been re- 5. Turn the drive chain slack adjust- moved together with the brake EAU25313 ing bolts fully in direction (a) and disc, otherwise the brake pads...
2. Slot for checking these vital systems your- self. However, should your motorcycle 2. Install the drive chain onto the rear require any repair, take it to a Yamaha sprocket. dealer, whose skilled technicians have 3. Install the axle nut.
Remove the spark plug and check the electrodes. The engine does not start. Have a Yamaha dealer check the vehicle. Check the battery. 4. Battery The engine turns over The battery is good.
Start the engine. If the engine overheats again, have a The coolant level Yamaha dealer check and repair the cooling system. is OK. 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 Cleaning even if high-quality components are sure to consult a Yamaha dealer for ECA10772 advice on what products to use be- used. A rusty exhaust pipe may go un- NOTICE fore cleaning the vehicle.
MOTORCYCLE CARE AND STORAGE off any detergent residue using Test the product on a small hid- plenty of water, as it is harmful den part of the windshield to Salt sprayed on roads in the winter may to plastic parts. make sure that it does not leave remain well into spring.
WARNING To prevent corrosion, avoid Contaminants on the brakes or tires Consult a Yamaha dealer for ad- damp cellars, stables (because can cause loss of control. vice on what products to use. of the presence of ammonia)
MOTORCYCLE CARE AND STORAGE 3. Perform the following steps to pro- 5. Check and, if necessary, correct tect the cylinder, piston rings, etc. the tire air pressure, and then lift from corrosion. the motorcycle so that both of its a. Remove the spark plug cap wheels are off the ground.
Record the key identification number, vehicle identification number and mod- el label information in the spaces pro- vided below for assistance when ordering spare parts from a Yamaha dealer or for reference in case the vehi- cle is stolen. KEY IDENTIFICATION NUMBER: 1.
1. Model label The model label is affixed to the frame under the rider seat. (See page 3-10.) Record the information on this label in the space provided. This information will be needed when ordering spare parts from a Yamaha dealer.
INDEX Engine trouble warning light ....3-3 Pass switch ..........3-5 Air filter element and check hose, replacing and cleaning......6-15 Front and rear brake pads, checking..6-21 Rider seat..........3-10 Auxiliary light bulb, replacing ....6-33 Front brake lever free play, checking ... 6-21 Front fork, checking ......