2000 Yamaha YFM400FWA(M) Factory Service workshop Manual, Page 245Get this manual

CONSTANT VELOCITY JOINTS AND DIFFERENTIAL GEAR

4.Attach: Gear lash measurement tool Dial gauge Gear lash measurement tool: PNYM-01475, 90890-01475
a Measuring point is 30 mm (1.18 in)

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