2002 Yamaha YFM660 Grizzly factory service and repair manual, Page 405Get this manual
FAULTY CLUTCH PERFORMANCE OVERHEATINGFAULTY BRAKE POOR SPEED PERFORMANCE V-belt Oil or grease on the V-belt Primary pulley weight Faulty operation Worn primary pulley weight Primary fixed sheave Worn primary fixed sheave
TRBL SHTG
Primary sliding sheave Worn primary sliding sheave Secondary fixed sheave Worn secondary fixed sheave Secondary sliding sheave Worn secondary sliding sheave