Honda CRF125F 2022 Owner's Manual
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Honda CRF125F 2022 Owner's Manual

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Honda CRF125F/FB
OWNER'S MANUAL
USO E MANUTENZIONE
MANUAL DEL PROPIETARIO
©
Honda Motor Co., Ltd. 2022

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  • Page 1 Honda CRF125F/FB OWNER’S MANUAL USO E MANUTENZIONE MANUAL DEL PROPIETARIO © Honda Motor Co., Ltd. 2022...
  • Page 2 IMPORTANT INFORMATION The information in this publication relates to the Honda CRF125F/FB, a single-track two-wheeled motor vehicle, powered by a spark ignited internal combustion engine and driven by a mounted rider. This motorcycle is not suitable for novice riders. This motorcycle shall only be used by trained and experienced riders.
  • Page 3 (Original instructions) All information in this publication is based on the latest production information available at the time of approval for printing. Honda Motor Co., Ltd. reserves the right to make changes at any time without notice and without incurring any obligation.
  • Page 4 As you read this manual, you will find information that is preceded by a symbol. This information is intended to help you avoid damage to your motorcycle, other property, or the environment. Pleasant riding, and thank you for choosing a Honda !
  • Page 5 • The following codes in this manual indicate each country. European direct sales Australia New Zealand • The specifications may vary with each locale. • The illustrations herein are based on the ED type. • This vehicle pictured in this owner’s manual may not match your actual vehicle.

  • Page 6: A Few Words About Safety

    A FEW WORDS ABOUT SAFETY Your safety, and the safety of others, is very important. And operating this motorcycle safely is an important responsibility. To help you make informed decisions about safety, we have provided operating procedures and other information on labels and in this manual. This information alerts you to potential hazards that could hurt you or others.
  • Page 7 These signal words mean: You WILL be KILLED or SERIOUSLY HURT if you don’t follow instructions. You CAN be KILLED or SERIOUSLY HURT if you don’t follow instructions. You CAN be HURT if you don’t follow instructions. • Safety Headings — such as Important Safety Reminders or Important Safety Precautions. •...
  • Page 8 OPERATION page page 1 MOTORCYCLE SAFETY 39 ESSENTIAL INDIVIDUAL COMPONENTS IMPORTANT MESSAGE TO PARENTS IGNITION SWITCH IMPORTANT SAFETY START BUTTON INFORMATION ENGINE STOP SWITCH PROTECTIVE APPAREL RIDING POSITION AND SAFETY EQUIPMENT LOAD LIMITS AND GUIDELINES LABELS 19 PARTS LOCATION INDICATORS 24 MAJOR COMPONENTS (Information you need to operate this motorcycle)
  • Page 9 page page 41 FEATURES 43 OPERATION (Not required for operation) PRE-RIDE INSPECTION LEFT SIDE COVER STARTING THE ENGINE SEAT RUNNING-IN RIDING BRAKING PARKING ANTI-THEFT TIPS...

  • Page 10: Maintenance

    MAINTENANCE page page 53 MAINTENANCE FRONT SUSPENSION THE IMPORTANCE OF REAR SUSPENSION MAINTENANCE SIDE STAND MAINTENANCE SAFETY 96 CLEANING SAFETY PRECAUTIONS MAINTENANCE SCHEDULE 99 TRANSPORTING TOOL KIT SERIAL NUMBERS 101 STORAGE GUIDE AIR CLEANER STORAGE CRANKCASE BREATHER REMOVAL FROM STORAGE ENGINE OIL SPARK PLUG 104 TAKING CARE OF THE...

  • Page 11: Motorcycle Safety

    Generally speaking, your PARENTS youngster should be good at riding a bicycle Your child’s safety is very important to Honda. before getting on a motorcycle. Can your That’s why we urge you to read this message before you let any young person ride this youngster judge speeds and distances on a motorcycle.
  • Page 12 Instruction and Supervision SUPERVISION is another important obligation of parents. Even after youngsters If you decide that your youngster is ready to have become skilled off-road riders, they safely operate this motorcycle, make sure both should always ride with adult supervision. It of you carefully read and understand the helps to regularly remind young riders of basic Owner’s Manual before riding.

  • Page 13: Important Safety Information

    IMPORTANT SAFETY Always Wear a Helmet INFORMATION It’s a proven fact: helmets significantly reduce the number and severity of head injuries. So Your motorcycle can provide many years of always wear an approved motorcycle helmet. service and pleasure – if you take responsibility We also recommend that you wear eye for your own safety and understand the protection, sturdy boots, gloves and other...
  • Page 14 Ride Off-Road Only Take Time to Learn and Practice Your motorcycle is designed and manufactured Developing appropriate off-road riding skills is for off-road use only. The tyres are not made important to your safety and is a gradual, step- for pavement, and the motorcycle does not by-step process.
  • Page 15 Remember that alcohol, drugs, fatigue limits, and only use accessories that have been and inattention can significantly reduce your approved by Honda for this motorcycle. See ability to make good judgements and ride page 8 for more details. safely.

  • Page 16: Protective Apparel

    PROTECTIVE APPAREL Helmets and Eye Protection For your safety, we strongly recommend that Your helmet is your most important piece of you always wear an approved motorcycle riding gear because it offers the best protection helmet, eye protection, boots, gloves, trousers, against head injuries.
  • Page 17 RIDING POSITION AND SAFETY EQUIPMENT Sit on the vehicle as shown below, keeping your hands on the handlebars and feet on the footpegs. Helmet and Eye Protection Off-road motorcycle gloves Long-sleeved apparel and Protector Riding trousers with Protector Off-road motorcycle boots...

  • Page 18: Load Limits And Guidelines

    LOAD LIMITS AND GUIDELINES Loading Your Honda was designed as a rider-only How much weight you put on your motorcycle, motorcycle. It was not designed to carry a and how you load it, are important to your passenger or cargo. A passenger or cargo could safety.
  • Page 19 Load Limits • Keep cargo small and light. Make sure it Following are the load limits for your cannot easily be caught on brush or other motorcycle: objects, and that it does not interfere with Maximum weight capacity: your ability to shift position to maintain CRF125F: 80 kg (176 lb) balance and stability.
  • Page 20 Because Honda cannot test all to read the following information. other accessories, you must be personally responsible for proper selection, installation and use of non-Honda accessories. Check with your dealer for assistance and always follow these guidelines: Improper accessories or modifications •...
  • Page 21 Because safety, vehicle movement, and clearance must be taken into consideration, you must consult your tyre maker or Honda dealer before changing your tyre model type. Removing or modifying your exhaust system (such as the spark arresters or mufflers) or other equipment can also make your motorcycle illegal.
  • Page 22 LABELS There is a specific symbol on each label. The meanings of each symbol and label are as The following pages describe the label follows. locations and their meanings. Some labels warn you of potential hazards that could cause serious injury. Others provide important safety information.
  • Page 23 Read instructions contained in Owner’s Manual carefully. Read instructions contained in Shop Manual carefully. In the interest of safety, take the motorcycle to be serviced only by your dealer. DANGER (with RED background) You WILL be KILLED or SERIOUSLY HURT if you don’t follow instructions.
  • Page 24 BATTERY LABEL DANGER • Keep flames and sparks away from the battery. The battery produces explosive gas that can cause an explosion. • Wear eye protection and rubber gloves when handling the battery to avoid risk of burns or loss of eyesight if exposed to battery electrolyte.
  • Page 25 USE CAUTION LABEL Operator only. No passengers. This vehicle is designed and manufactured for off-road use only. Operation on public streets, roads, or highways is illegal. Children should only use this vehicle under the permanent supervision of an adult responsible of their safety.
  • Page 26 REAR CUSHION LABEL GAS FILLED Do not open. Do not heat. CE MARK (ED type only) CRF125F: CRF125F: Engine net power: 6.7 kW Machine mass: 88 kg CRF125FB: Engine net power: 6.7 kW CRF125FB: Machine mass: 90 kg...
  • Page 27 USE CAUTION LABEL BATTERY LABEL REAR CUSHION LABEL DRIVE CHAIN LABEL...
  • Page 28 CE MARK (ED type only) FUEL LABEL (ED type only) CRF125F: UKCA MARK (ED type only) CRF125FB:...

  • Page 29: Parts Location

    PARTS LOCATION Ignition switch Fuel reserve indicator front brake fluid reservoir Clutch lever Engine stop switch Front brake lever Throttle grip Start button Fuel fill cap Ignition indicator PGM-FI malfunction indicator lamp (MIL)
  • Page 30 Kickstarter Engine oil fill cap/dipstick Spark plug Spark arrester Footpeg Engine oil drain bolt Rear brake pedal...
  • Page 31 Battery Main fuse Sub fuse Air cleaner Front brake caliper Drive chain Shift lever Crankcase breather tube Side stand Footpeg...
  • Page 32 INDICATORS The indicators are equipped to the locations as shown in the illustrations. Their functions are described in the tables. (3) Fuel reserve indicator (1) PGM-FI malfunction indicator lamp (MIL) (2) Ignition Indicator...
  • Page 33 (Ref.No.) Description Function (1) PGM-FI malfunction Lights when there is any abnormality in the PGM-FI (Programmed indicator lamp (MIL) Fuel Injection) system. The indicator should also light for a few seconds and then go off when the ignition switch is turned to the (ON) position with the engine stop switch in the (RUN) position.

  • Page 34: Major Components

    This motorcycle has a hydraulic front disc brake. The recommended brake fluid is Honda DOT 3 As the brake pads wear, brake fluid level drops. or DOT 4 brake fluid from a sealed container, There are no adjustments to perform, but fluid or an equivalent.
  • Page 35 Adjusting the Front Brake Lever Position: If brake lever freeplay is not within this range, Never use adjusters other than those designed see your dealer. for this motorcycle. Install a new adjuster from the lever side with the lock nut under the head of the adjuster.
  • Page 36 Rear Brake Adjusting the Rear Brake Pedal Freeplay: 1. Place the motorcycle on its side stand. Adjusting the Rear Brake Pedal Height: 2. Measure the distance the rear brake pedal 1. Place the motorcycle on its side stand. (3) moves before the brake starts to take 2.
  • Page 37 Adjust by turning the rear brake adjusting nut a half-turn at a time. Make sure the cut-out on the adjusting nut is seated on the brake arm pin (5) after making final freeplay adjustment. 4. Apply the brake several times and check for free wheel rotation after the brake pedal is released.
  • Page 38 CLUTCH 1. Pull back the rubber dust cover (2). 2. Loosen the lock nut (3) and turn the clutch Clutch adjustment may be required if the cable adjuster (4). Tighten the lock nut and motorcycle stalls when shifting into gear or check the adjustment.
  • Page 39 4. Loosen the lock nut (5) at the lower end of Other Checks: the cable. Turn the adjusting nut (6) to Check the clutch cable for kinks or signs of obtain the specified freeplay. Tighten the wear that could cause sticking or failure. lock nut and check the adjustment.
  • Page 40 FUEL Fuel Tank The fuel tank capacity: (0.98 US gal, 0.81 Imp gal) To open the fuel fill cap (1), pull out the breather tube (2) from the steering stem nut (3). Then turn the fuel fill cap counterclockwise. Do not overfill the tank. There should be no fuel in the filler neck (4).
  • Page 41 If spark knock or pinking persists, consult your dealer. Failure to do so is considered misuse, and damage caused by misuse is not covered by Honda’s Limited Warranty. Occasionally you may experience light spark knock while operating under heavy loads. This is no cause for concern, it simply means your engine is operating efficiently.
  • Page 42 • Damage the painting of the fuel tank. (gasohol), be sure it’s octane rating is at least as high as that recommended by Honda. Do not • Damage the rubber tubes of the fuel line. use petrol that contains more than 10 % •...

  • Page 43: Engine Oil

    ENGINE OIL 5. Reinstall the oil fill cap/dipstick. Check for oil leaks. Engine Oil Level Check Check the engine oil level each day before operating the motorcycle. The oil fill cap/dipstick (1) is at the rear of the Running the engine with insufficient oil can right crankcase cover and contains a dipstick cause serious engine damage.

  • Page 44: Wheels And Tyres

    WHEELS & TYRES It is important to properly replace parts according to the replacement schedule. We The tyres are the only point of contact between recommend that you leave this work to the your motorcycle and the road. Safety under any experts with the proper equipment and riding conditions is dependant upon this small experience.
  • Page 45 Air Pressure Tyres age, even if they have not been used or have only been used occasionally. Cracking of Properly inflated tyres are most important for the tread and sidewall rubber, sometimes safety, and will provide the best combination of accompanied by carcass deformation, is an handling, tread life, and riding comfort.
  • Page 46 Inspection Always check air pressure when your tyres are ‘‘cold.’’ If you check air pressure when your Whenever you check the tyre pressures, you tyres are ‘‘warm’’ – even if your motorcycle should also examine the tyre treads and has only been ridden for a few miles – the sidewalls for wear, damage, and foreign readings will be higher.
  • Page 47 Tread Wear Tube Repair and Replacement You must periodically confirm the tread wear If a tube is punctured or damaged, you should depth. replace it as soon as possible. A tube that is Replace tyres before tread depth (1) at the repaired may not have the same reliability as a centre of the tyre reaches the following limit: new one, and it may fail while you are riding.
  • Page 48 Wheel & Tyre Replacement Used tyres should not be installed if the previous usage record is unknown. The tyres that came on your motorcycle were designed to match the performance capabilities The recommended tyres for your motorcycle of your motorcycle and provide the best are: combination of handling, braking, durability Front: CRF125F: 70/100-17M/C 40M...

  • Page 49: Essential Individual Components

    ESSENTIAL INDIVIDUAL COMPONENTS IGNITION SWITCH The ignition switch (1) is located in front of handlebar. The ignition switch is used to prevent unauthorized use of the motorcycle. Before riding, insert the key and turn it to the (ON) position. After parking the motorcycle, remove the key. (1) Ignition switch Key Position Function...

  • Page 50: Start Button

    START BUTTON ENGINE STOP SWITCH The start button (1) is next to the throttle grip. The engine stop switch (1) is next to the When the start button is pressed, the starter throttle grip. motor cranks the engine. See page 46 for the When the switch is in the (RUN) position, starting procedure.

  • Page 51: Left Side Cover

    FEATURES (Not required for operation) LEFT SIDE COVER The left side cover (1) must be removed for air cleaner and sub fuse maintenance. Removal: 1. Remove the bolt A (2), bolt B (3) and collar (4). 2. Pull out the prong (5) from the rubber grommet (6), and the boss (7) from the hole (8) on the shroud.
  • Page 52 SEAT The seat (1) must be removed for battery and main fuse maintenance. Removal: 1. Remove the bolts (2) and collars (3). 2. Remove the seat backward. Installation: 1. Insert the front recess (4) into the front prong (5) and the rear prong (6) into the rear recess (7).

  • Page 53: Operation

    OPERATION PRE-RIDE INSPECTION • Engine oil level – add engine oil if required For your safety, it is very important to take a (page 33). Check for leaks. few moments before each ride to walk around • Fuel level – fill fuel tank when necessary your motorcycle and check its condition.
  • Page 54 • Throttle – check for smooth opening and full closing in all steering positions. Adjust freeplay if necessary (pages 73 – 74). • Indicators – check for normal operation of the indicators (page 22 – 23). • Clutch – check operation, and adjust if necessary (pages 28 –...

  • Page 55: Starting The Engine

    STARTING THE ENGINE Preparation Always follow the proper starting procedure Before starting, insert the key and turn the described below. ignition switch to (ON), and confirm the following: This motorcycle can be started with the • The transmission is in neutral. transmission in gear by disengaging the clutch •...
  • Page 56 Starting Procedure 2. If you cannot start the engine, open the throttle slightly (about 3 mm (0.1 in), This motorcycle has a fuel-injected engine. without freeplay). Follow the procedure indicated below. Any Air Temperature about 3 mm (0.1 in), without freeplay 1.
  • Page 57 Flooded Engine Ignition Cut Off (Using the start button) Your motorcycle is designed to automatically If the engine fails to start after repeated stop the engine and fuel pump if the attempts, it may be flooded with excess fuel. motorcycle is over-turned (a banking sensor To clear a flooded engine, open the throttle cuts off the ignition system).
  • Page 58 RUNNING-IN Help assure your motorcycle’s future reliability and performance by paying extra attention to how you ride during the first operating day or 25 km (15 miles). During this period, avoid full-throttle starts and rapid acceleration.
  • Page 59 RIDING 1. After the engine has been warmed up, the motorcycle is ready for riding. Review Motorcycle Safety (pages 1 – 18) 2. While the engine is idling, pull in the clutch before you ride. lever and depress the shift lever to shift into Make sure the side stand is fully retracted 1st (low) gear.
  • Page 60 5. Raise the shift lever to shift to a higher gear • Do not downshift when traveling at a speed and depress the shift lever to shift to a that would force the engine to overrev in the lower gear. Each stroke of the shift lever next lower gear;...
  • Page 61 BRAKING • When riding in wet or rainy conditions, or on For normal braking, gradually apply both the loose surfaces, the ability to maneuver and front and rear brakes while downshifting to suit stop will be reduced. All of your actions your road speed.

  • Page 62: Anti-Theft Tips

    PARKING ANTI-THEFT TIPS Touching the brakes after long hours or heavy 1. Be sure the registration information for usage, can cause burn injuries. Also, depending your motorcycle is accurate and current. on the section, the engine can be hot, and cause 2.

  • Page 63: The Importance Of Maintenance

    MAINTENANCE THE IMPORTANCE OF Frequent servicing of the air cleaner is MAINTENANCE especially important to help you avoid a possible costly engine repair. A well-maintained motorcycle is essential for safe, economical, and trouble-free riding. It If your motorcycle overturns or becomes will also help reduce air pollution.

  • Page 64: Maintenance Safety

    Always follow the procedures and professionals. Wheel removal should normally precautions in this owner’s manual. be handled only by a Honda technician or other qualified mechanic; instructions are included in this manual only to assist in emergency service. Some of the most important safety precautions follow.

  • Page 65: Safety Precautions

    Allow the engine, muffler, brakes and To ensure the best quality and reliability, use other high-temperature parts to cool only new Honda Genuine Parts or their before servicing as you can get burned. equivalents for repair and replacement. Injury from moving parts.

  • Page 66: Maintenance Schedule

    The following Maintenance Schedule specifies all maintenance required to keep your motorcycle in peak operating condition. Maintenance work should be performed in accordance with standards and specifications of Honda by properly trained and equipped technicians. Your dealer meets all of these requirements.
  • Page 67 FREQUENCY WHICHEVER INITIAL REGULAR MAINT. INTERVAL COMES MAINT. FIRST  1,000 2,000 3,000 4,000 REFER 1,200 1,800 2,400 ITEMS NOTE MONTH PAGE FUEL LINE – ✽ ✽✽ FUEL FILTER Every 8,000 km (4,800 mi): R – ✽ THROTTLE OPERATION AIR CLEANER NOTE (1) CRANKCASE BREATHER SPARK PLUG...
  • Page 68 FREQUENCY WHICHEVER INITIAL REGULAR MAINT. INTERVAL COMES MAINT. FIRST  1,000 2,000 3,000 4,000 REFER 1,200 1,800 2,400 ITEMS NOTE MONTH PAGE DRIVE CHAIN NOTE (1) I, L Every 500 km (300 mi) or every 3 months: I,L DRIVE CHAIN SLIDER BRAKE FLUID NOTE (2) BRAKE SHOES/PADS WEAR...
  • Page 69 TOOL KIT The spark plug wrench (1) and its handle (2) are stored in the tool bag (3). (1) Spark plug wrench (2) Handle (3) Tool bag...

  • Page 70: Serial Numbers

    SERIAL NUMBERS The frame and engine serial numbers are The frame number (1) is stamped on the left required when registering your motorcycle. side of the steering head. They may also be required by your dealer when The engine number (2) is stamped on the left ordering replacement parts.

  • Page 71: Air Cleaner

    AIR CLEANER 3. Unhook the set spring (3), take care to avoid bending the set spring and set spring Refer to the Safety Precautions on page 55. holder (4). The air cleaner should be serviced at regular 4. Remove the air cleaner (5). intervals (page 57).
  • Page 72 5. Remove the air cleaner holder (6) from the air cleaner (5). 6. Wash the air cleaner in clean, nonflammable or high flash point solvent and let it dry thoroughly. Never use petrol or low flash point solvents for cleaning the air cleaner. A fire or explosion could result.
  • Page 73 9. Clean the inside of the air cleaner housing. 10. Apply a thin coat of grease to the sealing (10) surface of the air cleaner. 11. Install the air cleaner assembly by inserting the upper tab (9) on the cleaner into the upper hole (10) in the air cleaner housing, and the lower tab (11) into the lower hole (12).

  • Page 74: Crankcase Breather

    CRANKCASE BREATHER Refer to the Safety Precautions on page 55. Service more frequently if your motorcycle is ridden in the rain or often at full throttle. If the drain tube overflows, the air filter may become contaminated with engine oil causing poor engine performance.
  • Page 75 API service container. They may affect lubrication and label clutch performance. Viscosity SAE 10W-30 JASO T 903 standard Suggested Oil NOT RECOMMENDED RECOMMENDED Honda ‘‘4-STROKE MOTORCYCLE OIL’’ • Do not use non-detergent, vegetable, or or an equivalent. castor based racing oils.
  • Page 76 Viscosity: Viscosity grade of engine oil should be based on average atmospheric temperature in your riding area. The following provides a guide to the selection of the proper grade or viscosity of oil to be used at various atmospheric temperatures.
  • Page 77 JASO T 903 standard The JASO T 903 standard is an index for engine oils for 4-stroke motorcycle engines. There are two classes: MA and MB. Oil conforming to the standard is labeled on the oil container. For example, the following label shows the MA classification.
  • Page 78 Engine Oil Changing the oil requires a torque wrench. If you do not have it and the necessary skill, we Engine oil quality is the chief factor affecting recommend that you have your dealer perform engine service life. Change the engine oil as this service.
  • Page 79 1. Place a drain pan under the crankcase. 2. To drain the oil, remove the oil fill cap/ dipstick, oil drain bolt (1), and sealing washer (2). 3. Install the oil drain bolt with a new sealing washer. Oil drain bolt torque: 24 N·m (2.4 kgf·m, 18 lbf·ft) 4.
  • Page 80 5. Install the oil fill cap/dipstick. 6. Start the engine and let it idle for 3 – 5 minutes. 7. 2 – 3 minutes after stopping the engine, check that the oil level is at the upper level mark on the oil fill cap/dipstick with the motorcycle upright on firm, level ground.

  • Page 81: Spark Plug

    SPARK PLUG Refer to the Safety Precautions on page 55. Never use a spark plug with an improper heat range. Severe engine damage could result. Recommended plug: Standard: 1. Disconnect the spark plug cap. CPR6EA-9 (NGK) 2. Clean any dirt from around the spark plug base.
  • Page 82 6. Check the spark plug gap (1) using a wire- 7. Make sure the plug washer is in good type feeler gauge. If adjustment is condition. necessary, bend the side electrode (2) 8. With the plug washer attached, thread the carefully.

  • Page 83: Throttle Operation

    THROTTLE OPERATION Refer to the Safety Precautions on page 55. Cable Inspection: 1. Check for smooth rotation of the throttle grip from the fully open to the fully closed position at both full steering positions. 2. Inspect the condition of the throttle cables (1) from the throttle grip down to the throttle body.
  • Page 84 Freeplay Adjustment: 1. Adjust freeplay with the throttle cable adjuster (1). Measured in grip rotation, the standard throttle grip freeplay is: 2 – 6 mm (0.1 – 0.2 in) 2. To adjust the freeplay, slide the throttle cable boot (2), then loosen the lock nut (3) and turn the cable adjuster.

  • Page 85: Spark Arrester

    SPARK ARRESTER 1. Remove the bolts (1), the spark arrester (2), and the gasket (3) from the muffler (4). Refer to the Safety Precautions on page 55. 2. Use a brush to remove carbon deposits The exhaust system spark arrester must be from the spark arrester screen (5).

  • Page 86: Drive Chain

    DRIVE CHAIN 3. Roll the motorcycle forward. Stop. Check the drive chain slack. Repeat this procedure Refer to the Safety Precautions on page 55. several times. Drive chain slack should remain constant. If the chain is slack only in The service life of the drive chain (1) is certain sections, some links are kinked and dependent upon proper lubrication and binding.
  • Page 87 4. Check the chain slider (2) for wear. 5. Measure a section of the drive chain to If the depth (3) of the chain slider reaches determine whether the chain is worn the service limit, have your dealer replace beyond its service limit. Remove the drive the chain slider.
  • Page 88 6. Inspect the sprocket teeth for possible wear Adjustment: or damage. If the drive chain requires adjustment, the procedure is as follows: 1. Place a support block under the engine to Damaged Sprocket Worn Sprocket Teeth raise the rear wheel off the ground. Teeth 2.
  • Page 89 4. Turn the adjusting nut (3) on both the right If a torque wrench is not used for this and left chain adjusters an equal number of installation, see your dealer as soon as possible turns to increase or decrease chain slack. to verify proper assembly.
  • Page 90 Removal and Cleaning: 5. Pass the chain over the sprockets and join the ends of the chain with the master link. When the drive chain becomes dirty, it should For ease of assembly, hold the chain ends be removed and cleaned prior to lubrication. against adjacent rear sprocket teeth while 1.

  • Page 91: Wheel Rims And Spokes

    WHEEL RIMS AND SPOKES Refer to the Safety Precautions on page 55. 1. Inspect the wheel rims (1) and spokes (2) for damage. 2. Tighten any loose spokes and rim lock (3). 3. Check wheel rim runout. If runout is noticeable, see your dealer for inspection.

  • Page 92: Wheel Removal

    WHEEL REMOVAL Refer to the Safety Precautions on page 55. Front Wheel Removal 1. Raise the front wheel off the ground by placing a support block under the engine. 2. Remove the axle nut (1). 3. Remove the front axle shaft (2), wheel, and side collars.
  • Page 93 Installation: If the torque wrench was not used for • Reverse the removal procedure. installation, see your dealer as soon as possible to verify proper assembly. Improper assembly 1. Install the side collars into the left and right may lead to loss of braking capacity. side wheel hub.
  • Page 94 Rear Wheel Removal 1. Raise the rear wheel off the ground by placing a support block under the engine. 2. Unscrew the rear brake adjuster (1). 3. Press and release the rear brake pedal and disconnect the brake rod (2) from the brake arm (3).
  • Page 95 Installation: 1. Reverse the removal procedure. Make sure that the lug (1) on the swingarm is located in the slot (2) in the brake panel. Tighten the axle nut to: 62 N·m (6.3 kgf·m, 46 lbf·ft) 2. Adjust the drive chain (pages 78 – 79). 3.

  • Page 96: Brake Pads Wear

    BRAKE PADS WEAR <FRONT BRAKE> Refer to the Safety Precautions on page 55. Brake pad wear depends upon the severity of usage, the type of riding, and road conditions. (Generally, the pads will wear faster on wet and dirty roads.) Inspect the pads at each regular maintenance interval (page 58).
  • Page 97 See your dealer for this service. When the brake service is necessary, see your dealer. Use only Honda Genuine Parts or its equivalent. (1) Arrow (2) Brake arm (3) Reference mark...
  • Page 98 BATTERY Refer to the Safety Precautions on page 55. An improperly disposed of battery can be harmful to the environment and human health. It is not necessary to check the battery Always confirm local regulations for battery electrolyte level or add distilled water as the disposal.
  • Page 99 The battery (1) is in the battery compartment under the seat. Removal: 1. Make sure the ignition switch is OFF. 2. Remove the seat (page 42). 3. Disconnect the negative (−) terminal lead (2) from the battery. 4. Disconnect the positive (+) terminal lead (3) from the battery.

  • Page 100: Fuse Replacement

    FUSE REPLACEMENT Refer to the Safety Precautions on page 55. When frequent fuse failure occurs, it usually Blown fuse indicates a short circuit or an overload in the electrical system. See your dealer for repair. Never use a fuse with a different rating from that specified.
  • Page 101 Sub Fuse: The sub fuse (1) is located behind the left side cover. The specified fuses are: 1. Turn the ignition switch OFF before checking or replacing the fuses to prevent an accidental short-circuit. 2. Remove the left side cover (page 41). 3.
  • Page 102 Main Fuse: The main fuse (1) is located under the seat. The specified fuse is: 15 A 1. Turn the ignition switch OFF before checking or replacing the fuses to prevent an accidental short-circuit. 2. Remove the seat (page 42). 3.

  • Page 103: Front Suspension

    FRONT SUSPENSION Operating the motorcycle with loose, worn, or damaged steering or front suspension Refer to the Safety Precautions on page 55. components may adversely affect vehicle Check the fork operation by locking the front handling and stability. brake and pumping the forks up and down If any suspension components appear worn or several times.

  • Page 104: Rear Suspension

    REAR SUSPENSION Refer to the Safety Precautions on page 55. Check the rear suspension periodically by careful visual examination. Note the following items: 1. Swingarm bearings (1) should be checked by pushing hard against the side of the rear wheel while the motorcycle is on a support block.

  • Page 105: Side Stand

    SIDE STAND Refer to the Safety Precautions on page 55. Check the side stand spring (1) for damage and loss of tension, and the side stand assembly for freedom of movement. If the side stand is squeaky or stiff, clean the pivot area and lubricate the pivot bolt with clean engine oil.
  • Page 106 CLEANING Clean your motorcycle regularly to protect the High pressure washers (like those at coin- surface finishes and inspect for damage, wear operated car washes) can damage certain parts and oil leakage. of your motorcycle. If you use a high pressure washer, avoid spraying the following areas: Avoid cleaning products that are not specifically designed for motorcycle or...
  • Page 107 Washing the Motorcycle 6. Test the brakes before riding the motorcycle. Several applications may be 1. Rinse the motorcycle thoroughly with cool necessary to restore normal braking water to remove loose dirt. performance. 2. Clean the motorcycle with a sponge or soft 7.
  • Page 108 Finishing Touches Clean the Mat Painted Surface After washing your motorcycle, consider using Using plenty of water, clean the mat painted a commercially-available spray cleaner/polish surface with a soft cloth or sponge. Dry with a or quality liquid or paste wax to finish the job. soft, clean cloth.
  • Page 109 TRANSPORTING If you use a truck or motorcycle trailer to To secure your motorcycle, brace the front transport your motorcycle, we recommend that wheel against the front of the truck bed or you follow these guidelines: trailer rail. Attach the lower ends of two straps to the tie-down hooks on your vehicle.
  • Page 110 Check that the tie-down straps do not contact any control cables or electrical wiring. Tighten both straps until the front suspension is compressed about half-way. Too much pressure is unnecessary and could damage the fork seals. Use another tie-down strap to keep the rear of the motorcycle from moving.

  • Page 111: Storage Guide

    STORAGE GUIDE Extended storage, such as for winter, requires that you take certain steps to reduce the effects of deterioration from non-use of the motorcycle. In addition, necessary repairs Petrol is highly flammable and should be made BEFORE storing the explosive.
  • Page 112 3. To prevent rusting in the cylinder, perform 4. Remove the battery. Store in an area the following: protected from freezing temperatures and • Remove the spark plug cap from the direct sunlight. spark plug. Using tape or string, secure Slow charge the battery once a month.

  • Page 113: Removal From Storage

    REMOVAL FROM STORAGE 1. Uncover and clean the motorcycle. 2. Change the engine oil if more than 4 months have passed since the start of storage. 3. Charge the battery as required. Install the battery. 4. If your motorcycle has been stored for more than two months–drain and replace the fuel.

  • Page 114: Taking Care Of The Unexpected

    TAKING CARE OF THE UNEXPECTED IF YOU CRASH Personal safety is your first priority after a If there is minor damage, or you are unsure crash. If you or anyone else has been injured, about possible damage, ride slowly and take time to assess the severity of the injuries cautiously.

  • Page 115: Unstable Engine Operation Occurs Intermittently

    UNSTABLE ENGINE OPERATION OCCURS INTERMITTENTLY If the fuel pump filter is clogged, unstable engine operation will occur intermittently while riding. Even if this symptom occurs, you can continue to ride your motorcycle. If unstable engine operation occurs even if sufficient fuel is available, have your motorcycle inspected by your dealer as soon as possible.

  • Page 116: Specifications

    SPECIFICATIONS DIMENSIONS Overall length CRF125F: 1,770 mm (69.7 in) CRF125FB: 1,855 mm (73.0 in) CRF125F: 740 mm (29.1 in) Overall width CRF125FB: 770 mm (30.3 in) CRF125F: 1,000 mm (39.4 in) Overall height CRF125FB: 1,070 mm (42.1 in) Wheelbase CRF125F: 1,220 mm (48.0 in) CRF125FB: 1,255 mm (49.4 in) CAPACITIES...

  • Page 117: Chassis And Suspension

    ENGINE 52.4 × 57.9 mm (2.06 × 2.28 in) Bore and stroke 9.0 : 1 Compression ratio Displacement 125 cm (7.6 cu-in) Spark plug Standard CPR6EA-9 (NGK) Spark plug gap 0.8 – 0.9 mm (0.03 – 0.04 in) Idle speed 1,400 ±100 min (rpm) Valve clearance (Cold)

  • Page 118: Power Transmission

    POWER TRANSMISSION Primary reduction 3.250 Gear ratio, 3.181 1.705 1.238 0.916 Final reduction CRF125F: 3.538 CRF125FB: 3.769 ELECTRICAL Battery YTZ4V 12 V – 3.0 Ah (10 HR)/3.2 Ah (20 HR) Alternator 0.125 kW / 5,000 min (rpm) FUSE Main fuse 15 A Sub fuse...
  • Page 119 NOISE LEVEL AND VIBRATIONS (ED type only) Noise level 76 dB(A) EN16029 Operating Conditions : Annex A Uncertainty of measurement 3 dB(A) Vibration on seat Not exceed 0.5 m/s EN1032 Operating conditions : UN R41, stationary noise Uncertainty of measurement Vibration on handlegrip Not exceed 2.5 m/s ISO5349 : 2001...
  • Page 120 Sundiro Honda Motorcycle Co., Ltd. No. 188, Jiasong Middle Road, Manufacturer Huaxin, Qingpu District, Shanghai, China Honda Motor Europe Ltd - Aalst Office Authorized representative Wijngaardveld 1 (Noord V) and importer for EU market 9300 Aalst - Belgium Honda Motor Europe Ltd...

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