2000 Yamaha YFM400FWA(M) Factory Service workshop Manual, Page 132Get this manual

2000 Yamaha YFM400FWA(M) Factory Service workshop Manual, Page 132

CYLINDER HEAD

NOTE: Fasten safety wire to the timing chain to prevent it from falling into the crankcaseWhen removing the camshaft sprocket, it is not necessary to separate the timing chain
5.Remove: Cylinder head