This is the same manual that your local dealer uses to diagnose & service your 4 wheeler !!

Factory Service Manual

350+ PAGES OF VERY USEFUL INFORMATION FOR MAINTAINING AND REPAIRING YOUR YAMAHA YFZ 450.

This does not cover the newest 450r and 450x machines

HERE IS WHAT THE MANUAL COVERS

General Information

Maintenance

Engine Removal and Installation

Engine Fuel System

Engine Lubrication and Cooling

Engine Combustion System

Transmission System

Front Wheel and Steering System

Rear Wheel System

Fenders and Exhaust Pipe

Electrical System

Troubleshooting