1997 Yamaha YFM600FWAK ATV Service Manual, Page 316Get this manual
FAULTY CLUTCH PERFORMANCE ISTHRTBLJ? OVERHEATINGFAULTY BRAKE _ POOR SPEED PERFORMANCE V-belt Primary sliding sheave
Oil or grease is on the V-belt
Primary pulley weight
Worn primary sliding sheave
Secondary fixed sheave
Faulty operation Worn primary pulley weight
Primary fixed sheave
Worn secondary fixed sheave
Secondary sliding sheave
Worn secondary sliding sheave
Worn primary fixed sheave
OVERHEATING
OVERHEATING Ignition system Engine oil
Improper spark plug gap Improper spark plug heat range Faulty CDI unit
Fuel system