1992-1993 Yamaha V Max 4 VX750 Snowmobile Factory Service Manual, Page 81Get this manual
Quality of the image is intentionally reduced!
PRIMARY SHEAVE AND DRIVE V-BELT 3 Inspect: Primary sheave spring CD CracksWearDamage Replace4 Measure: Primary sheave spring free length Out of specification ReplacePrimary sheave spring free length: