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Honda CR250R User Manual

Honda CR250R
149 pages
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FOR COMPETITION USE ONLY
This motorcycle is designed and manufactured for closed-course competition conducted under the
auspices of a recognized body or by permit. It does not conform to federal motor vehicle standards,
and operation on public streets, roads, or highways is illegal. This vehicle is sold “as is” with no
warranties.
FOR EXPERIENCED RIDERS, NO PASSENGERS
This motorcycle is designed as an operator-only vehicle and for use by experienced riders only. The
load limit and seating configuration do not safely permit the carrying of a passenger.
IMPORTANT NOTICES
This manual should be considered a permanent part of the motorcycle and should remain with the motorcycle when it is resold.
All information in this publication is based on the latest product 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.
No part of this publication may be reproduced without written permission.
The vehicle pictured on the front cover may not match your vehicle.
©Honda Motor Co., Ltd., 2006
*CR250/IMPORTANT NOTI(31KSK63 6/2/06 9:53 AM Page b

Table of Contents

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Honda CR250R Specifications

General IconGeneral
Displacement249cc
IgnitionCDI
Transmission5-speed
Rear BrakeSingle disc
Bore x Stroke66.4mm x 72.0mm
Front SuspensionTelescopic fork
Rear SuspensionPro-Link single shock
Front BrakeSingle disc

Summary

A Few Words About Safety

Motorcycle Safety

Operating Controls

Locations

Details the physical placement of the motorcycle's operating controls.

Before Riding

Is Your Motorcycle Ready to Ride?

Basic Operating Instructions

Starting & Stopping the Engine

Flooded Engine

Procedure for clearing excess fuel when the engine fails to start.

Break-in Guidelines

Maintenance Safety

Maintenance Schedule

Before & After Competition Maintenance

General Competition Maintenance

Air Cleaner

Instructions for cleaning and maintaining the air cleaner for optimal performance.

Air Cleaner Housing Sealing

Ensuring the integrity of the air cleaner housing seal to prevent dirt intrusion.

Fuel System Maintenance

Fuel Filter

Procedure for cleaning and servicing the fuel filter.

Fuel Contamination

Instructions for checking and cleaning the carburetor for contamination.

Inlet Tract Sealing

Ensuring proper sealing of the carburetor insulator and reed valve assembly.

Pressure/Vacuum Leak-Down Test

Performing tests to minimize engine damage from air leaks.

Chassis Maintenance

Steering Head Bearings

Periodic cleaning, inspection, and regreasing of steering head bearings.

Fork Oil/Performance

Disassembly, cleaning, and regular oil replacement for the front fork.

Frame

Periodic inspection of the frame for possible cracking or damage.

Spokes

Frequent checking of spoke tension between the first few rides.

Nuts, Bolts, Etc

Application of thread locking agent to essential fasteners for security.

Subframe Removal

Seat Removal

Fuel System

Fuel Filter

Procedure for cleaning and servicing the fuel filter.

Fuel Tank Removal

Replacing Transmission Oil

Checking Coolant

Coolant Replacement

Air Cleaner

Lower Adjustment

Throttle

Clutch System

Clutch Lever Freeplay

Checking the freeplay of the clutch lever and adjustment specifications.

Other Inspections & Lubrication

Inspections and lubrication for the clutch system components.

Clutch Operation

Steps for checking smooth clutch lever operation and cable condition.

Clutch Disc/Plate Inspection

Cylinder System

Exhaust Valve Removal

RC Valve

Procedure for removing the RC valve assembly from the cylinder.

Cylinder System

Cylinder Decarbonizing

Removing carbon deposits from the cylinder head and dome.

Cylinder/Piston/Piston Pin/Piston Ring Inspection

Recommends consulting the Service Manual for inspection measurements.

Cylinder Installation

Reed Valve

RC Valve

Exhaust Valve Removal

Procedure for removing the exhaust valve components.

Front RC Valve cable

Brakes

Adjustment

Adjusting the brake lever position for proper operation.

Brake Pedal Height

Setting the brake pedal height relative to the footpeg.

Suspension

Brakes

Fluid Check

Checking the brake fluid level and condition.

Other Inspection

Ensuring no fluid leaks and checking hoses/fittings for deterioration.

Wheels

Axles & Wheel Bearings

Inspecting axles for runout and checking wheel bearing condition.

Wheels

Other Inspections

Checking front lever/rear pedal assemblies, fluid leaks, and hose condition.

Inspection

Tires & Tubes

Drive Chain

Drive Chain

Lubrication

Instructions for lubricating the drive chain to prevent rust.

Drive Chain

Replacement chain

Information on the recommended replacement chain and service limit.

More About: Drive Chain

Details on the critical master link and chain installation tips.

Expansion Chamber Removal

Expansion Chamber Installation

Procedure for installing the expansion chamber.

Control Cables

Additional Maintenance Procedures

Washing Your Motorcycle with a Mild Detergent

Aluminum Frame Maintenance

Adjustments for Competition

Front Suspension Adjustments

Detailed instructions for adjusting front suspension settings.

Front Suspension Adjustment

Front Suspension Disassembly

Steps for disassembling the front suspension for service.

Front Suspension Adjustments

Damper Oil Change

Procedure for changing the oil in the fork damper assembly.

Rear Suspension Adjustments

Spring preload length (Standard spring)

Specifications for standard spring preload length.

Spring preload length (Optional spring)

Specifications for optional spring preload length.

Suspension Adjustments for Track Conditions

Suspension Adjustment Guidelines

Carburetor Adjustments & Tuning Tips

Carburetor Circuit Functions

Explanation of the major fuel/air mixture circuits in the carburetor.

Carburetor Adjustments & Tuning Tips

Pre-Adjustment Checks

Checks to perform before adjusting carburetor settings.

Carburetor Adjustments & Tuning Tips

Spark Plug Coloring Guidelines

Interpreting spark plug appearance to diagnose engine mixture conditions.

Tips

Transporting Your Motorcycle

Guidelines for safely transporting the motorcycle.

Storing Your Honda

Procedures for properly storing the Honda motorcycle.

Gearing

Personal Fit Adjustments

Troubleshooting

Technical Information

Vehicle Identification

Information on identifying the motorcycle's model and serial numbers.

Specifications

Key technical specifications for the motorcycle.

Torque Specifications

Recommended torque values for various fasteners and components.

High Altitude Carburetor Adjustment

Adjusting the carburetor for optimal performance at higher altitudes.

Oxygenated Fuels

Precautions and considerations when using oxygenated fuels.

Competition Logbook

Guidance on recording racing and maintenance data for performance tracking.

Optional Parts List

List of optional parts available for the motorcycle.

Spare Parts & Equipment

Information on recommended spare parts and essential equipment.

Wiring Diagram

Schematic illustrating the motorcycle's electrical system layout.

Consumer Information

Authorized Manuals

Information on obtaining official service and owner's manuals.

Contacting Honda

How to get in touch with Honda for support and information.

Your Honda Dealer

Information regarding your local Honda dealer for service and parts.

The Honda Rider’s Club (USA only)

Details about joining the Honda Rider’s Club for enthusiasts.

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