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Yamaha YZ85(T) User Manual

Yamaha YZ85(T)
508 pages
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5PA-28199-83
OWNER’S SERVICE MANUAL
MANUEL D’ATELIER DU
PROPRIETAIRE
FAHRER- UND
WARTUNGS-HANDBUCH
YZ85(T)
YZ85LW(T)

Table of Contents

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Yamaha YZ85(T) Specifications

General IconGeneral
BrandYamaha
ModelYZ85(T)
CategoryMotorcycle
LanguageEnglish

Summary

GENERAL INFORMATION

DESCRIPTION

Identifies and labels various parts of the motorcycle using numbered diagrams.

MACHINE IDENTIFICATION

Explains how to find vehicle identification and engine serial numbers for parts ordering and theft recovery.

SPECIFICATIONS

GENERAL SPECIFICATIONS

Lists key dimensions, weights, and engine/chassis/electrical details of the YZ85/YZ85LW models.

MAINTENANCE SPECIFICATIONS

Provides standard and limit values for engine components like cylinder head, cylinder, piston, and piston rings.

REGULAR INSPECTION AND ADJUSTMENTS

MAINTENANCE INTERVALS

Outlines the recommended schedule for inspecting and maintaining various motorcycle components.

PRE-OPERATION INSPECTION AND MAINTENANCE

Details essential checks to perform before operating the motorcycle.

ENGINE

SEAT, FUEL TANK AND SIDE COVERS

Covers removal and installation procedures for the seat, fuel tank, and side covers.

EXHAUST PIPE AND SILENCER

Details the removal and installation of the exhaust pipe and silencer.

RADIATOR

Procedures for removing and installing the radiator.

CARBURETOR AND REED VALVE

Explains the removal, inspection, and installation of the carburetor and reed valve.

CYLINDER HEAD, CYLINDER AND PISTON

Covers disassembly, inspection, and assembly of the cylinder head, cylinder, and piston.

CLUTCH AND PRIMARY DRIVEN GEAR

Procedures for removing, inspecting, and installing the clutch and primary driven gear.

KICK SHAFT, SHIFT SHAFT AND PRIMARY DRIVE GEAR

Details the removal and installation of kick shaft, shift shaft, and primary drive gear.

WATER PUMP

Procedures for removing, inspecting, and installing the water pump.

CDI MAGNETO

Covers removal, inspection, and installation of the CDI magneto.

CRANKCASE AND CRANKSHAFT

Details the disassembly and assembly of the crankcase and crankshaft.

TRANSMISSION, SHIFT CAM AND SHIFT FORK

Procedures for removing, inspecting, and installing transmission components like shift forks and cams.

CHASSIS

FRONT WHEEL AND REAR WHEEL

Covers inspection and removal/installation of front and rear wheels.

FRONT BRAKE AND REAR BRAKE

Details inspection, adjustment, and replacement of front and rear brake components.

FRONT FORK

Procedures for inspecting, adjusting, and disassembling the front fork.

HANDLEBAR

Covers handlebar removal, installation, and inspection.

STEERING

Inspection and adjustment of the steering system, including head bearings.

SWINGARM

Procedures for inspecting, removing, and installing the swingarm and its related components.

REAR SHOCK ABSORBER

Covers inspection, adjustment, and handling of the rear shock absorber.

ELECTRICAL

ELECTRICAL COMPONENTS AND WIRING DIAGRAM

Identifies electrical components and presents the system's wiring diagram.

IGNITION SYSTEM

Details inspection and troubleshooting of the ignition system.

TUNING

ENGINE

Discusses engine tuning, focusing on carburetor settings and their impact on performance.

Carburetor setting

Explains the role of fuel mixture and how atmospheric conditions affect carburetor settings.

Atmospheric conditions and carburetor settings

Provides a table linking atmospheric conditions to carburetor settings for optimal mixture.

Test run

Outlines steps for a test run to check engine operation and spark plug condition.

Main jet adjustment

Instructions on adjusting the main jet for air-fuel mixture at full throttle.

Pilot air screw adjustment

Procedures for adjusting the pilot air screw for low-speed mixture settings.

Jet needle adjustment

Instructions on adjusting the jet needle for air-fuel mixture at mid-range throttle.

Jet needle groove position adjustment

Explains how to adjust the jet needle clip position for intermediate speeds.

Carburetor setting parts

Lists parts used for carburetor adjustment, including jets and needles.

Road condition and examples of carburetor setting

Provides examples of carburetor settings based on road conditions and symptoms.

Selection of the secondary reduction ratio (Sprocket)

Guides on selecting the appropriate secondary reduction ratio (sprocket combination) for different course types.

Front fork setting

Explains how to adjust the front fork settings, including oil level and spring preload.

Setting of spring after replacement

Procedures for setting the front fork spring after replacement.

Rear suspension setting

Guidance on adjusting rear suspension preload and damping force based on rider feel and conditions.

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