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Honda CRF250R 2020 User Manual

Honda CRF250R 2020
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132 Adjustments for Competition
Rear Suspension Adjustments
Rebound Damping
The rebound damping adjuster (6) is located at the
lower end of the rear shock absorber.
It has 17 clicks or more. Turning the adjuster one
full turn advances the adjuster 8 clicks.
When adjusting the rebound damping adjuster,
make sure to use the proper size tool to avoid
damage.
Rebound damping can be increased by turning
the adjuster clockwise.
Be sure that the rebound damping adjuster is
firmly located in a detent, and not between
positions.
To adjust to the standard position:
1. Turn the adjuster clockwise (harder) until it
will no longer turn (lightly seat). Turn the
adjuster counterclockwise (softer) until it
clicks. This click is position 1.
2. Set the adjuster position 8 to 11 clicks and
adjust it until the punch marks (7) on the
adjuster and the rear shock absorber are
aligned.
Setting the proper race sag (ride height) is very
important for competition use.
Race sag refers to the amount of rear wheel travel
used by your CRF at rest, ready to ride, with you
on the seat. As a general rule of thumb, the race sag
dimension should be about one-third of the
maximum travel.
On your CRF, ride height is changed by adjusting
the rear suspension spring pre-load.
Spring Pre-load & Race Sag Adjustment
The following adjustment procedure establishes
the correct starting point for any suspension tuning
— the proper rear suspension spring preload
adjustment for your specific needs.
Your CRF should be at normal racing weight,
including fuel, oil and coolant. You should be
wearing all your normal protective apparel. You
will need two helpers.
To calculate the proper adjustment, it is necessary
to measure between two fixed points — from the
center of the seat mounting bolt to the center of the
chain adjuster lock nut as illustrated here — for
two different situations:
unloaded: motorcycle on an optional workstand
with rear suspension fully extended, no rider.
loaded with rider: motorcycle on ground, with
rider.
1. Support your CRF on an optional workstand
with the rear wheel off the ground.
2. Measure the unloaded dimension.
(6) rebound damping adjuster (7) punch marks
(6)
(7)
Rear Suspension Race Sag
UNLOADED MEASUREMENT
(without rider)
EXAMPLE: 24.6 in (625 mm)
SEAT MOUNTING BOLT
CHAIN ADJUSTER LOCK NUT

Table of Contents

Questions and Answers:

Honda CRF250R 2020 Specifications

General IconGeneral
Engine Type249cc liquid-cooled single-cylinder four-stroke
Bore x Stroke79.0mm x 50.9mm
Compression Ratio13.9:1
IgnitionFull transistorized ignition
Front BrakeSingle 260mm disc with twin-piston caliper
Front Tire80/100-21
Rear Tire100/90-19
Trail4.6 inches
Wheelbase58.3 inches
Seat Height37.8 inches
Fuel Capacity1.6 gallons
Ground Clearance13.2 inches
Valve TrainUnicam, 4-valve
InductionProgrammed Fuel Injection (PGM-FI)
Transmission5-speed
Final Drive#520 chain
Front Suspension49mm inverted Showa coil-spring fork with rebound and compression damping adjustability; 12.2 inches travel
Rear SuspensionShowa® Pro-Link® system with rebound and compression damping adjustability; 12.4 inches travel
Rear BrakeSingle 240mm disc
Rake27.2°

Summary

Motorcycle Safety

Important Safety Information

Provides crucial safety guidance for riding and operation.

Important Safety Precautions

Details essential precautions for safe operation and riding.

Accessories & Modifications

Discusses the implications of non-Honda accessories and modifications.

Safety Labels

Explains the importance and location of safety labels on the motorcycle.

Instruments & Controls

Operation Component Locations

Identifies the location of various controls and components on the motorcycle.

MIL (Malfunction Indicator Lamp)

Explains the function and behavior of the Malfunction Indicator Lamp.

MIL Blink Pattern

Describes the various blink patterns of the MIL and their meaning.

Current DTC/Freeze DTC

Details how Diagnostic Trouble Codes (DTCs) and Freeze Data are indicated.

Circuit Inspection

Guides on inspecting electrical circuits and connectors for issues.

DTC Index

Lists DTC numbers and their corresponding function failures and symptoms.

Mode Indicator

Explains the function and display of the mode indicator.

Before Riding

Are You Ready to Ride?

Assesses rider readiness and general safety checks before operating the motorcycle.

Is Your Motorcycle Ready to Ride?

Outlines essential pre-ride checks for the motorcycle's condition.

Pre-ride Inspection

Details a comprehensive checklist of items to inspect before each ride.

Basic Operating Instructions

Safe Riding Precautions

Provides essential safety precautions for operating the motorcycle.

Starting & Stopping the Engine

Details the correct procedures for starting and stopping the engine.

Fast Idle Knob

Explains the function and use of the fast idle knob for starting.

Preparation

Notes the importance of ensuring the transmission is in neutral before starting.

Starting Procedure

Step-by-step guide for starting the motorcycle's engine.

How to Stop the Engine

Instructions for safely stopping the engine.

Break-in Guidelines

Recommends procedures for the initial break-in period of the motorcycle.

Servicing Your Honda

Before You Service Your Honda

Introduces essential considerations before performing maintenance.

Service Preparations

Covers preparations before performing specific service tasks.

Service Procedures

Contains step-by-step instructions for various maintenance tasks.

Adjustments for Competition

Engine Mode Select Button

Explains how to change engine performance characteristics using the mode select button.

Current Mode

Describes how to check the currently active PGM-FI mode.

Mode Selection

Details the procedure for selecting different PGM-FI modes.

Front Suspension Adjustments

Covers adjustments for front suspension, including air pressure and damping.

Rear Suspension Adjustments

Covers adjustments for rear suspension, including spring pre-load and damping.

Suspension Adjustments for Track Conditions

Offers guidance on adjusting suspension for different track surfaces.

Suspension Adjustment Guidelines

Provides a systematic approach to suspension tuning for various symptoms.

Tuning Tips

Offers general tips for tuning the motorcycle's performance.

Spark Plug Reading

Explains how to read spark plugs for engine tuning insights.

Chassis Adjustments

Covers adjustments related to the chassis for handling improvements.

Gearing

Explains how gearing changes affect power delivery and track performance.

Tire Selection for Track Conditions

Offers recommendations for selecting tires based on track conditions.

Personal Fit Adjustments

Covers adjustments for rider comfort and control input.

Tips

Transporting Your Motorcycle

Provides guidelines for safely transporting the motorcycle.

Storing Your Honda

Details procedures for preparing and storing the motorcycle.

You & the Environment

Offers advice on environmentally responsible motorcycle ownership.

Troubleshooting

Provides a guide to diagnosing and resolving common issues.

Taking Care of the Unexpected

If a Fuse Blows

Explains how to identify and replace a blown fuse.

If Your Battery Is Low (or Dead)

Offers advice on dealing with a low or dead battery.

Technical Information

Vehicle Identification

Explains how to locate VIN and engine serial numbers for registration and parts.

Specifications

Lists key technical specifications, capacities, and dimensions of the motorcycle.

Torque Specifications

Provides torque values for various fasteners and components.

Nuts, Bolts, Fasteners

Details torque specifications for engine and frame fasteners.

Oxygenated Fuels

Discusses the use and potential effects of oxygenated fuels.

Competition Logbook

Explains the importance and content of a competition logbook.

Optional Parts List

Lists available optional parts and tools for purchase.

Spare Parts & Equipment

Lists recommended spare parts, general tools, and special tools.

Wiring Diagram

Presents the electrical system wiring diagram.

Consumer Information

Authorized Manuals

Lists available service manuals and guides for the motorcycle.

Contacting Honda

Provides contact information for Honda customer support and feedback.

Your Honda Dealer

Explains the services and resources available through a Honda dealer.

The Honda Rider’s Club (USA only)

Information about the Honda Rider's Club and its activities.

Quick Reference

How To Avoid Costly Repairs

Offers advice on preventing common and expensive engine repairs.

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