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Honda CRF450X 2021 User Manual

Honda CRF450X 2021
103 pages
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Contents
Vehicle Safety P. 2
Operation Guide P. 14
Maintenance P. 36
Troubleshooting P. 65
Information P. 75
Specifications P. 97
2021 CRF450X
31MKE720
MOM 17466 (2003)
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Honda CRF450X 2021 Specifications

General IconGeneral
Engine Type449cc liquid-cooled single-cylinder four-stroke
Bore x Stroke96.0mm x 62.1mm
Compression Ratio12.0:1
InductionProgrammed Fuel Injection (PGM-FI), 46mm throttle body
IgnitionFull transistorized ignition
Rear BrakeSingle 240mm disc
Front Tire80/100-21
Rear Tire110/100-18
Wheelbase58.3 inches
Final Drive520 chain; 13T/51T
Rear SuspensionPro-Link Showa single shock with spring preload, rebound and compression damping adjustability; 12.3 inches travel
Front BrakeSingle 240mm disc
Curb Weight275 pounds
Fuel Capacity2.0 gallons
Front Suspension49mm leading-axle inverted telescopic fork with rebound and compression damping adjustability; 12.0-inch travel

Summary

Vehicle Safety

Safety Guidelines

Follow these guidelines to enhance your safety and riding pleasure.

Safety Labels

Safety and information labels on your vehicle provide important safety information.

Safety Precautions

Make sure that you are wearing an approved helmet, eye protection, and other appropriate riding gear.

Riding Precautions

During the first operating day or 15 miles (25 km) of running, follow these guidelines.

Accessories & Modifications

We strongly advise that you do not add any accessories that were not specifically designed or approved for your vehicle.

Loading

We recommend that you do not carry any cargo on this motorcycle.

Operation Guide

Parts Location

Identify the location of key parts on your vehicle.

Instruments

Understand the vehicle's display, speedometer, and clock functions.

Indicators

Learn the meaning of various indicator lamps on the instrument panel.

Switches

Locate and understand the function of the engine stop and start buttons.

Starting the Engine

Follow the procedures for starting the engine, including cold and warm starts.

Shifting Gears

Learn the 6-speed transmission pattern and how to shift gears.

Refueling

Follow guidelines for refueling your vehicle safely and correctly.

Maintenance

Importance of Maintenance

Keeping your vehicle well-maintained is essential for safety and performance.

Maintenance Schedule

Details regular inspection and service intervals for off-road use.

Maintenance Fundamentals

Covers pre-ride inspections, between-motos checks, and general maintenance practices.

Removing & Installing Body Components

Instructions for removing and installing parts like the battery, seat, and side cover.

Troubleshooting

Engine Will Not Start

Diagnose and resolve issues when the engine fails to start.

Warning Indicators On or Flashing

Understand and address issues indicated by warning lights on the instrument panel.

Battery Goes Dead

Troubleshoot and resolve issues related to a depleted vehicle battery.

Burned-out Light Bulb

Procedure for replacing burned-out headlight and taillight bulbs.

Blown Fuse

Locate and replace blown fuses in the fuse box and main fuse.

Information

Caring for Your Vehicle

Guidelines for cleaning, polishing, and maintaining your vehicle's appearance and condition.

Storing Your Vehicle

Procedures for properly storing your vehicle for extended periods.

Transporting Your Vehicle

Recommendations and safety guidelines for transporting your vehicle on trailers.

Emission Control Systems

Details on the vehicle's emission control systems and compliance requirements.

Warranty Coverage and Service

Information on warranty terms, coverage, and recommended service procedures.

Specifications

Vehicle Dimensions

Key physical measurements of the vehicle, including length, width, and wheelbase.

Engine Specifications

Technical details of the engine, such as bore, stroke, displacement, and valve clearance.

Frame and Tires

Details on frame type, recommended tires, and tire pressure.

Electrical and Fuses

Information on battery type, spark plugs, fuses, and lighting.

Torque Specifications

Required torque values for various bolts and fasteners during maintenance.

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