2009-2012 Honda MUV700 Big Red Service Manual, Page 501Get this manual
REAR DRIVING MECHANISM
TROUBLESHOOTING
Consistent noise during cruising Oil level too low Foreign matter contaminating gear oil Worn or damaged bearing Worn or damaged ring gear and pinion gear Deformed ring gear or gear case Improper tooth contact between ring gear and pinion gear Gear noises while running Oil level too low Foreign matter contaminating gear oil Chipped or damaged gears Improper tooth contact between ring gear and pinion gear Gear noise while coasting Chipped or damaged gears Abnormal noises when turning Worn or damaged ring gear bearing Damaged differential components (side gear, pinion or shaft) Worn or damaged differential housing Abnormal noises at start or during acceleration Excessive backlash between ring gear and pinion gear Worn differential splines Loose fasteners