2000 Yamaha YFM400FWA(M) Factory Service workshop Manual, Page 76Get this manual

2000 Yamaha YFM400FWA(M) Factory Service workshop Manual, Page 76

IGNITION TIMING CHECK COMPRESSION PRESSURE MEASUREMENT 3.Check: Ignition timing

INSP ADJ

Checking steps: Warm up the engine and keep it at the specified speedEngine speed: 1,4501,550 rmin