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Yamaha YZ450F User Manual

Yamaha YZ450F
360 pages
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OWNER’S SERVICE MANUAL
MANUEL D’ATELIER DU
PROPRIETAIRE
FAHRER- UND
WARTUNGSHANDBUCH
YZ450FF
YZ450F
1SL-28199-81
PRINTED IN JAPAN
2014.03—1.0 × 1
!
(E, F, G)
PRINTED ON RECYCLED PAPER
2015
YZ450F YZ450FF
2015
q Read this manual carefully before operating this vehicle.
q Il convient de lire attentivement ce manuel avant la première utilisation du véhicule.
q
Bitte lesen Sie diese Bedienungsanleitung sorgfältig durch, bevor Sie das Fahrzeug in Betrieb nehmen.
1SL-28199-81_cover.indd 1 2014/03/25 13:38:53

Table of Contents

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Yamaha YZ450F Specifications

General IconGeneral
Displacement449cc
Bore x Stroke97.0 mm x 60.8 mm
Transmission5-speed
Final DriveChain
Width32.5 in
Seat Height38.2 in
Wheelbase58.5 in
Fuel Capacity1.6 gal
Fuel SystemFuel Injection
Front SuspensionKYB® Speed-Sensitive System inverted fork; fully adjustable, 12.2-in travel
Front BrakesHydraulic single disc, 270mm
Rear BrakesHydraulic single disc
Front Tire80/100-21
Rear Tire120/80-19
Wet Weight245 lbs
Engine TypeLiquid-cooled, 4-stroke, DOHC, 4-valve

Summary

General Information

Location of Important Labels

Identifies and illustrates the location of all crucial labels on the vehicle for user reference.

Motorcycle Description

Provides a detailed overview and identification of various parts of the motorcycle.

Vehicle Identification

Explains how to find and understand the VIN, engine serial number, and model label.

Key Features and FI System Outline

Details the vehicle's main features, including an overview of the Fuel Injection (FI) system.

Included Parts List

Lists and illustrates the parts that come with the vehicle, such as tools and accessories.

Important Information for Service

Covers essential guidelines for preparation, disassembly, and replacement parts.

Special Tools

Lists specialized tools required for accurate adjustment, assembly, and maintenance.

Control Functions Overview

Explains the operation and location of all main controls like levers, pedals, and switches.

Specifications

General Specifications

Provides key general data for the motorcycle including dimensions, weight, and model variations.

Engine Specifications

Details all technical specifications related to the engine, including displacement, bore, stroke, and oil types.

Chassis Specifications

Lists technical data for the chassis, wheels, tires, brakes, and suspension systems.

Electrical Specifications

Provides detailed specifications for the ignition, charging, and engine control systems.

Tightening Torques

Specifies the correct torque values for various fasteners throughout the motorcycle.

Lubrication Points and Types

Identifies all lubrication points and the recommended lubricant types for engine and chassis.

Periodic Checks and Adjustments

Maintenance Intervals Schedule

Outlines the recommended inspection and maintenance schedule based on time or usage.

Pre-Operation Checks

Details essential checks to be performed before operating the vehicle for the first time or for racing.

General Inspection Guide

Provides a general overview of inspection points for critical systems like coolant, fuel, and brakes.

Engine Checks and Adjustments

Covers procedures for checking and adjusting engine components like coolant level and oil.

Chassis Checks and Adjustments

Details checks and adjustments for chassis components including brakes, chain, and suspension.

Electrical System Checks

Explains how to check electrical components such as spark plugs, ignition coils, and sensors.

Chassis

General Chassis Procedures

Covers removal and installation of common chassis parts like seat, side covers, and number plate.

Front Wheel Service

Details the removal, checking, disassembly, assembly, and installation of the front wheel.

Rear Wheel Service

Covers the removal, checking, disassembly, assembly, and installation of the rear wheel.

Front Brake System Service

Explains procedures for removing, disassembling, checking, and assembling the front brake caliper and master cylinder.

Rear Brake System Service

Details the removal, disassembly, checking, and assembly of the rear brake caliper and master cylinder.

Handlebar Service

Covers the removal, checking, and installation of the handlebar and its related controls.

Front Fork Service

Provides procedures for removing, disassembling, checking, and assembling the front fork legs.

Steering Head Service

Details the removal, checking, adjustment, and installation of the steering head components.

Rear Shock Absorber Service

Covers handling, disposal, removal, checking, and installation of the rear shock absorber assembly.

Swingarm Service

Explains the removal, checking, and installation procedures for the swingarm and its related components.

Drive Chain Service

Details the removal, checking, cleaning, and installation of the drive chain and sprockets.

Engine

Engine Removal Procedures

Outlines the step-by-step process for removing the engine and its related components.

Camshaft Service

Covers the removal, checking, and installation of the camshaft and related parts.

Cylinder Head Service

Details the removal, checking, and installation of the cylinder head and its components.

Valves and Valve Springs Service

Explains the removal, checking, and installation of valves, springs, and related parts.

Cylinder and Piston Service

Covers the removal, checking, and installation of the cylinder, piston, and piston rings.

Clutch System Service

Details the removal, checking, and installation of clutch components like plates, springs, and housing.

Kickstarter System Service

Explains the removal, checking, and installation of the kick starter shaft and related gears.

Shift Shaft System Service

Covers the removal, checking, and installation of the shift shaft, forks, and related components.

Oil Pump and Balancer Gear Service

Details the removal, checking, and installation of the oil pump and balancer gear assemblies.

AC Magneto Service

Explains the removal, checking, and installation of the AC magneto and stator assembly.

Crankcase Service

Covers the separation, disassembly, checking, and assembly of the crankcase.

Crankshaft and Balancer Shaft Service

Details the removal, checking, and installation of the crankshaft and balancer shaft assemblies.

Transmission System Service

Explains the removal, checking, and installation of the transmission, shift drum, and shift forks.

Cooling System

Radiator Service

Covers the removal, handling, checking, and installation of the radiator and its hoses.

Water Pump Service

Details the removal, checking, and assembly of the water pump and its components.

Fuel System

Fuel Tank Service

Covers the removal, installation, and checking of the fuel tank and fuel pump.

Throttle Body Service

Details the removal, checking, and adjustment of the throttle body and related sensors.

Electrical System

Ignition System Service

Covers the circuit diagram, troubleshooting, and checking of ignition system components.

Charging System Service

Details the circuit diagram, troubleshooting, and checking of the charging system components.

Fuel Injection System Service

Covers circuit diagrams, diagnostic tools, and troubleshooting for the fuel injection system.

Fuel Pump System Service

Provides circuit diagrams and troubleshooting steps for the fuel pump system.

Electrical Components Overview

Illustrates and lists the location of various electrical components on the motorcycle.

Troubleshooting

Troubleshooting General Information

Provides general guidance and refers to specific procedures for troubleshooting various issues.

Troubleshooting Starting Failures

Lists common causes and checks for engine starting problems.

Troubleshooting Incorrect Engine Idling

Addresses potential causes and solutions for abnormal engine idling speeds.

Troubleshooting Faulty Clutch

Details common clutch problems like slipping or dragging and their potential causes.

Troubleshooting Overheating

Identifies causes for engine overheating and cooling system issues.

Troubleshooting Poor Braking

Lists potential causes for reduced braking performance and safety concerns.

Troubleshooting Faulty Front Fork

Addresses issues related to front fork oil leaks, bent tubes, or damaged components.

Troubleshooting Unstable Handling

Covers potential causes for poor vehicle stability, including chassis and suspension issues.

Diagnostic Codes and Fail-Safe Actions

Provides a list of diagnostic codes and corresponding fail-safe actions for the FI system.

Tuning

Secondary Reduction Ratio (Sprocket) Selection

Guides the selection of drive and driven sprockets for optimal performance based on riding conditions.

Tire Pressure Adjustment

Recommends adjusting tire pressure based on road surface conditions for optimal grip and safety.

Front Fork Suspension Settings

Explains how to adjust front fork settings for air spring, spring preload, and damping force.

Rear Suspension Setting Guide

Covers setting the spring preload and damping force for the rear shock absorber.

Front Fork Suspension Tuning

Provides a table for diagnosing and adjusting front fork settings based on specific symptoms.

Rear Shock Absorber Tuning

Offers a table for diagnosing and adjusting rear shock absorber settings based on handling symptoms.

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