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Yamaha YFM70RY User Manual

Yamaha YFM70RY
374 pages
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2009
SERVICE MANUAL
YFM70RY
1S3-28197-E2

Table of Contents

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Yamaha YFM70RY Specifications

General IconGeneral
BrandYamaha
ModelYFM70RY
CategoryOffroad Vehicle
LanguageEnglish

Summary

General Information

Identification

Details about vehicle identification and model labels.

Features

Overview of the Fuel Injection (FI) system and its components.

Important Information

Essential notes on preparation, parts, and specific component handling.

Checking the Connections

Procedure for inspecting electrical leads, couplers, and connectors.

Special Tools

List of specific tools required for maintenance and assembly with reference pages.

Specifications

General Specifications

Covers overall dimensions, weight, and model details.

Engine Specifications

Details engine type, displacement, bore, stroke, fuel, and oil specifications.

Chassis Specifications

Provides details on frame, wheels, tires, brakes, and suspension specifications.

Electrical Specifications

Outlines system voltage, ignition, battery, and component electrical data.

Tightening Torques

Specifies torque values for general, engine, and chassis fasteners.

Lubrication Points and Lubricant Types

Identifies lubrication points and recommended lubricants for engine components.

Cooling System Diagrams

Illustrates the flow and components of the vehicle's cooling system.

Cable Routing

Details the correct routing and securing of electrical leads, cables, and hoses.

Periodic Checks and Adjustments

Chassis

Outlines maintenance for brakes, wheels, tires, steering, and suspension systems.

Electrical System

Details checks for battery, fuses, bulbs, relays, and switches.

Periodic Maintenance

Provides charts for routine maintenance intervals and jobs for emission control systems.

Engine

Covers checks and adjustments for engine components like valve clearance and oil.

Chassis

General Chassis

Covers removal/installation of body panels, seat, and skid plates.

Front Wheels

Details removal, checking, and installation of front wheels and brake discs.

Rear Wheels

Covers removal, checking, and installation of rear wheels and hubs.

Rear Axle and Rear Axle Hub

Details removal, checking, and installation of the rear axle and hub.

Front Brakes

Covers checking, replacing pads, and servicing front brake calipers and master cylinder.

Rear Brake

Details maintenance for rear brake pads, caliper, and master cylinder.

Handlebar

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

Steering Stem

Details removal, checking, and installation of the steering stem and related components.

Tie-rods and Steering Knuckles

Covers removal, checking, and installation of tie-rods and steering knuckles.

Front Arms and Front Shock Absorber Assemblies

Details removal, checking, and adjustment of front suspension components.

Rear Shock Absorber Assembly

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

Swingarm

Details removal, checking, cleaning, and installation of the swingarm assembly.

Chain Drive

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

Engine

Engine Removal

Details procedures for removing the muffler, exhaust pipe, oil tank, and engine.

Cylinder Head

Covers removal, checking, and installation of the cylinder head and related parts.

Camshaft

Details removal, checking, and installation of the camshaft, rocker arms, and related components.

Valves and Valve Springs

Covers removal, checking, and installation of valves, springs, and related parts.

Cylinder and Piston

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

AC Magneto and Starter Clutch

Covers removal, checking, and installation of AC magneto and starter clutch components.

Electric Starter

Details checking and assembling the starter motor.

Clutch

Covers removal, checking, and installation of clutch components.

Oil Pump

Details removal, disassembling, checking, and assembling the oil pump.

Shift Shaft

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

Crankcase

Details separating, checking, and assembling the crankcase.

Crankshaft

Covers removal, checking, and installation of the crankshaft.

Transmission

Details removal, disassembling, checking, and installation of transmission components.

Cooling System

Radiator

Details removal, checking, and installation of the radiator.

Thermostat

Covers removal, checking, and installation of the thermostat.

Water Pump

Details removal, disassembling, checking, and assembling the water pump.

Fuel System

Fuel Tank

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

Throttle Body

Covers removal, disassembling, checking, and installing the throttle body.

Electrical System

Ignition System

Details circuit diagram and troubleshooting for the ignition system.

Electric Starting System

Covers circuit diagram, operation, and troubleshooting for the starting system.

Charging System

Provides circuit diagram and troubleshooting for the charging system.

Lighting System

Details circuit diagram and troubleshooting for headlights, taillights, and indicators.

Signaling System

Covers circuit diagram and troubleshooting for various warning and indicator lights.

Cooling System

Covers circuit diagram and troubleshooting for the radiator fan motor.

Fuel Injection System

Details circuit diagram, ECU functions, and troubleshooting for the FI system.

Fuel Pump System

Provides circuit diagram and troubleshooting for the fuel pump system.

Electrical Components

Lists and describes checks for switches, bulbs, fuses, battery, relays, and sensors.

Troubleshooting

General Information

Offers basic troubleshooting principles and a guide to the manual.

Starting Failures

Lists common causes and checks for engine, fuel, and electrical systems related to starting issues.

Incorrect Engine Idling Speed

Identifies potential causes for improper engine idling speed.

Poor Medium-and-High-Speed Performance

Suggests checks for air filter, fuel pump, and throttle body issues.

Faulty Gear Shifting

Lists potential causes for difficult gear shifting.

Shift Pedal Does Not Move

Identifies issues with the shift shaft, forks, and transmission.

Jumps Out of Gear

Points to problems with the shift shaft, forks, or transmission gears.

Faulty Clutch

Lists causes for clutch slippage and drag.

Overheating

Identifies common causes for engine overheating.

Overcooling

Lists potential causes for engine overcooling.

Poor Braking Performance

Outlines issues related to brake pads, discs, fluid, and hoses.

Faulty Shock Absorber Assembly

Details problems with damper rod, oil leaks, springs, and gas cylinders.

Unstable Handling

Lists factors affecting vehicle handling, such as handlebar, steering, swingarm, and tires.

Faulty Lighting or Signaling System

Addresses issues with headlights, taillights, indicators, and warning lights.

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