1991-1993 Yamaha Exciter II-570 Service Manual, Page 298Get this manual
6Measure:
PRIMARY SHEAVE AND DRIVE V-BELT
R_ IPOTWRio IQI
Bushing inside diameter Out of specification ReplaceBushing inside diameter Primary sheave cap New Wear limit 28.0 mm (1.10in) 28.2 mm (1.11 in) Sliding sheave 41.0 mm (1.61 in) 41.2 mm (1.62 in)
7Measure: Bushing inside diameter Out of specification Replace as set
Bushing inside diameter Roller New Wear limit 8.0mm (0.31 in) 8.2mm (0.32 in) Weight
ASSEMBLY
Reverse the "DISASSEMBLY" procedureNote the following points1 Install: Sliding sheave (onto spider)