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Honda CRF50F 2004-2015 User Manual

Honda CRF50F 2004-2015
209 pages
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Table of Contents

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Honda CRF50F 2004-2015 Specifications

General IconGeneral
Engine Type49cc air-cooled single-cylinder four-stroke
Bore x Stroke39.0mm x 41.4mm
Compression Ratio10.0:1
Induction13mm piston-valve carburetor
IgnitionCDI
TransmissionThree-speed with automatic clutch
Final DriveChain
Front BrakeDrum
Rear BrakeDrum
Front Tire2.50-10
Rear Tire2.50-10
Trail1.8 inches
Seat Height21.6 inches
Curb Weight110 pounds
Fuel Capacity0.7 gallons
Height30.3 inches
StarterKick
Front SuspensionInverted telescopic fork; 3.5 inches travel
Rear SuspensionSingle shock
Rake25°

Summary

A Few Words About Safety

Service Information and Safety Advice

General service procedures and crucial safety information.

Customer Safety Guidance

Emphasizes customer safety and proper procedures for vehicle maintenance.

Important Safety Precautions

Lists essential safety practices and warnings for servicing the vehicle.

How to Use This Manual

Manual Navigation and Structure

Guide on how to find information and understand the manual's structure.

Symbols Used in the Manual

Service Procedure Symbols

Explains the meaning of symbols used to indicate specific service procedures.

1. General Information

Service Rules

Guidelines for performing motorcycle service and maintenance correctly.

Model Identification

Details on identifying the motorcycle model and its serial numbers.

General Specifications

Key technical specifications and measurements for the motorcycle.

Lubrication & Seal Points

Identifies locations and types of lubricants and sealants for various parts.

Cable & Harness Routing

Instructions on how to properly route cables and electrical harnesses.

Emission Control Systems

Information regarding the motorcycle's emission control systems and regulations.

2. Frame/Body Panels/Exhaust System

Service Information

General advice for servicing frame, body panels, and exhaust system.

Seat Service

Procedures for removing and installing the motorcycle seat.

Fuel Tank Service

Steps for safely removing and installing the fuel tank.

Number Plate Service

Instructions for removing and installing the number plate.

Front Fender Service

Procedures for removing and installing the front fender.

Exhaust System Service

Instructions for removing and installing the exhaust system.

Side Stand Service

Procedures for removing and installing the side stand.

3. Maintenance

Service Information

General advice and precautions for performing maintenance.

Maintenance Schedule

Schedule of regular maintenance intervals and required tasks.

Fuel Line Service

Inspection and replacement of fuel lines and strainer.

Throttle Operation

Checking and adjusting throttle grip free play and operation.

Air Cleaner Service

Procedures for cleaning and replacing the air cleaner element.

Spark Plug Service

Inspection, cleaning, and replacement of spark plugs.

Valve Clearance Adjustment

How to inspect and adjust valve clearance.

Engine Oil Service

Procedures for checking oil level and performing oil changes.

Drive Chain Maintenance

Inspecting, adjusting, cleaning, and lubricating the drive chain.

Brake System Inspection

Checking front and rear brake systems for proper function.

Suspension Inspection

How to inspect front and rear suspension components for wear.

4. Lubrication System

Lubrication System Diagram

Diagram illustrating the motorcycle's lubrication system flow.

Service Information

General information and cautions for the lubrication system.

Troubleshooting

Common lubrication system problems and their solutions.

Oil Pump Service

Procedures for removing, disassembling, and inspecting the oil pump.

5. Fuel System

Component Location

Identifies the location of fuel system components.

Service Information

General advice and specifications for fuel system service.

Troubleshooting

Common fuel system problems and their causes.

Air Cleaner Housing Service

Procedures for removing and installing the air cleaner housing.

Carburetor Service

Procedures for carburetor removal, disassembly, assembly, and adjustment.

Crankcase Breather Service

Maintenance procedures for the crankcase breather system.

6. Engine Removal/Installation

Component Location

Identifies the location of engine mounting points and related parts.

Service Information

Guidelines for safely removing and installing the engine.

Engine Removal Procedure

Step-by-step instructions for removing the engine from the frame.

Engine Installation Procedure

Step-by-step instructions for installing the engine into the frame.

7. Cylinder Head/Valves

Component Location

Identifies components of the cylinder head and valve train.

Service Information

General procedures for cylinder head and valve service.

Troubleshooting

Common problems related to cylinder head and valves.

Cylinder Compression Test

How to measure engine cylinder compression.

Camshaft Removal

Procedures for removing the camshaft.

Cylinder Head Service

Procedures for removing and disassembling the cylinder head.

Valve Guide Replacement

Steps for removing and installing new valve guides.

Valve Seat Inspection and Refacing

How to inspect and reface valve seats.

Camshaft Installation

Procedures for installing the camshaft.

8. Cylinder/Piston

Component Location

Identifies the location of cylinder and piston components.

Service Information

General guidelines for cylinder and piston service.

Troubleshooting

Common problems related to cylinder and piston.

Cylinder Removal

Steps for removing the cylinder from the crankcase.

Piston Removal

Procedures for removing the piston from the cylinder.

Cylinder/Piston Inspection

How to inspect cylinder bore and piston for wear.

Piston Ring Installation

Procedures for installing piston rings correctly.

Piston Installation

Steps for installing the piston into the cylinder.

Cylinder Installation

Steps for installing the cylinder onto the crankcase.

9. Clutch/Gearshift Linkage

Component Location

Identifies the location of clutch and gearshift linkage components.

Service Information

General information for clutch and gearshift linkage service.

Troubleshooting

Common issues with the clutch and gearshift linkage.

Clutch Service

Procedures for removing, disassembling, and inspecting the clutch.

Gearshift Linkage Service

Procedures for servicing the gearshift linkage components.

10. Alternator/Cam Chain Tensioner

Component Location

Identifies the location of alternator and cam chain tensioner.

Service Information

General information for alternator and cam chain tensioner service.

Troubleshooting

Common problems related to alternator and cam chain tensioner.

Flywheel/Stator Removal

Steps for removing the flywheel and stator assembly.

Cam Chain Tensioner Service

Inspection and installation of the cam chain tensioner.

Stator/Flywheel Installation

Procedures for installing the stator and flywheel.

11. Crankshaft/Transmission/Kickstarter

Component Location

Identifies the location of crankshaft, transmission, and kickstarter parts.

Service Information

General guidelines for servicing these engine components.

Troubleshooting

Common problems related to crankshaft, transmission, kickstarter.

Crankcase Separation

Steps to separate the crankcase halves.

Crankshaft Service

Procedures for removing and inspecting the crankshaft.

Transmission Service

Procedures for disassembling and inspecting the transmission.

Kickstarter Service

Procedures for removing and assembling the kickstarter.

12. Front Wheel/Brake/Suspension/Steering

Component Location

Identifies the location of front wheel, brake, suspension, steering parts.

Service Information

General advice for front wheel, brake, suspension, steering service.

Troubleshooting

Common issues related to the front end of the motorcycle.

Handlebar Service

Procedures for removing and installing the handlebar.

Front Wheel Service

Steps for removing, inspecting, and assembling the front wheel.

Front Brake Service

Procedures for front brake inspection and disassembly.

Fork Service

Procedures for disassembling, inspecting, and assembling front forks.

Steering Stem Service

Procedures for removing and replacing steering stem bearings.

13. Rear Wheel/Brake/Suspension

Component Location

Identifies the location of rear wheel, brake, suspension parts.

Service Information

General advice for rear wheel, brake, and suspension service.

Troubleshooting

Common issues related to the rear end of the motorcycle.

Rear Wheel Service

Steps for removing, inspecting, and assembling the rear wheel.

Rear Brake Service

Procedures for rear brake inspection and disassembly.

Shock Absorber Service

Procedures for removing, inspecting, and installing the shock absorber.

Swingarm Service

Procedures for removing, inspecting, and installing the swingarm.

Brake Pedal Service

Procedures for removing and installing the brake pedal.

14. Ignition System

System Diagram

Electrical schematic of the ignition system.

Service Information

General advice and cautions for ignition system service.

Troubleshooting

Common ignition system problems and diagnostic steps.

Ignition System Inspection

How to inspect ignition system components for proper function.

Ignition Coil Service

Procedures for ignition coil removal and installation.

Ignition Control Module Service

Procedures for ignition control module removal and installation.

Ignition Switch Service

Procedures for ignition switch removal and installation.

Ignition Timing

How to check and verify ignition timing.

15. Wiring Diagram

Wiring Diagram

Complete wiring diagram for the motorcycle's electrical system.

16. Troubleshooting

Engine Start Issues

Diagnostic steps for engine starting problems.

Engine Lacks Power

Troubleshooting guide for loss of engine power.

Low/Idle Speed Performance Issues

Addressing issues affecting low-speed and idle performance.

High Speed Performance Issues

Troubleshooting guide for high-speed performance problems.

Poor Handling

Diagnosing and resolving issues affecting motorcycle handling.

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