1988-1994 Honda TRX300 Fourtrax, 1988, 1990-1994 TRX300FW Fourtrax Service Manual, Page 266Get this manual

FRONT DRIVING MECHANISM (TRX300FW) CASE BEARING REPLACEMENT
NOTE The drive pinion bearing cannot be removedReplace the differential case if the bearing is damagedRemove the oil sealDrive the ring gear bearing out of the case and cover
Blow compressed air through the breather hole in the differential cover

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