Clymer Manuals M4922 Fits Yamaha Pw50/80 Motorcycle Repair Service Manual Clymer motorcycle service and repair manuals are written specifically for the do-it-yourselfer. Whether it s routine maintenance troubleshooting or more extensive repairs involving engine and transmission overhaul our manuals provide the information you need to maintain and repair your motorcycle. The step-by-step procedures detailed photos and extensive exploded parts views in each manual are based on the complete disassembly of the bike. Unlike the OEM factory manuals which are designed for the professional motorcycle mechanic Clymer shop manuals are designed specifically for the first time user.