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Yamaha MX825V-EFI Service Manual

Yamaha MX825V-EFI
59 pages
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Yamaha MX825V-EFI Specifications

General IconGeneral
BrandYamaha
ModelMX825V-EFI
CategoryEngine
LanguageEnglish

Summary

Engine Overview

Feature Map

Illustrates key engine features with labels pointing to components.

Specification Summary

Provides a table comparing engine specifications with competitors.

Engine Components and Systems

Crankshaft Design

Details 30-degree phase shift and internal oil passages for reduced vibration.

Piston and Rings

Explains lightweight, short-skirt pistons and thin rings for reduced friction.

Valve System

Discusses multi-valve design and shim adjustment for performance and low maintenance.

Lubrication System

Details forced lubrication system with trochoid pump, oil cooler, and strainer.

Fuel Injection System

Explains FI system for balancing fuel efficiency, performance, and emissions.

Engine Architecture

Highlights 75-degree V-bank angle V-twin engine design for compact size.

Operation, Maintenance, and Troubleshooting

Safety Information

Advises on safe operation, handling exhaust fumes, and fuel.

Hazard Avoidance

Covers electric shock, fluid leaks, accidental starts, and rotating parts hazards.

Before Operation

Details engine oil preparation and essential pre-operation checks.

Operation Precautions

Warns against operating in closed areas and reiterates the need for engine oil.

Periodic Maintenance

Provides a chart detailing maintenance tasks and their recommended intervals.

Spark Plug Maintenance

Guides on checking spark plug condition, type, gap, and tightening torque.

Engine Oil & Filter Replacement

Details draining oil, replacing filter, and refilling with new oil.

Air Filter Maintenance

Explains how to remove, clean, and replace air filter elements.

Storage Procedures

Covers fuel stabilization and engine protection for long-term storage.

Troubleshooting Engine Issues

Guides checks for oil, spark plug, and air filter when engine fails to start.

Fuse Checks and Replacement

Explains how to check and replace fuses, warning about using specified fuses.

Specialized Systems and Information

FI Diagnostic Tool

Details the functions and use of the FI diagnostic tool for error codes and sensor outputs.

Wiring Schematic

Provides diagrams and information on engine wiring and components.

Equipment Information

Lists key electrical components like battery, switch, and lamps and their wiring.

Oil Pressure Switch Operation

Explains how the oil pressure switch activates the warning light based on oil pressure.

Valve Adjustment Procedure

Provides step-by-step instructions for measuring and adjusting valve clearance.

Fuel Pump System Operation

Details the operation of the fuel pump system, including vacuum and electric pumps.

Detailed Specifications

Provides comprehensive technical specifications for the engine, including dimensions and performance.

Consumer and Identification Info

Explains how to locate and record the machine's serial number for identification.

Emission Control System

Lists components and acronyms related to the exhaust emission control system.

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