2006-2009 Honda TRX680 (TRX 680 FA-FGA) Factory Service Manual, Page 273Get this manual

CRANKCASECRANKSHAFTBALANCER
TROUBLESHOOTING
Excessive engine noise Worn or damaged connecting rod bearing Worn crankshaft main journal bearing

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