2000 Yamaha YFM400FWA(M) Factory Service workshop Manual, Page 182Get this manual

CRANKCASE

OIL PUMP DRIVE GEAR REMOVAL 1.Straighten: Lock washer tab

2.Remove: Oil pump drive gear nut

Removal steps: Temporaly install the clutch carrier assembly 1Hold the clutch carrier assembly with clutch holding tool and loosen the oil pump drive gear nutClutch holding tool: PNYM-91042, 90890-04086

• ATV
• Jet Ski
• Outboard Motors
• Personal Watercraft
• Snowmobiles
• Stern Drives