I'VE GOT THE SAME PROBLEM ON A1992 YAMAHA BIG BEAR 350. WHEN I ORDERED THE SEALS, I GOT THREE. MY REPAIR MANUAL INSTRUCTS ME TO REMOVE THE REAR END, REMOVE THE AXLE BY SLIDING IT OUTOF THE HOUSING, THEN REMOVING THE SEALS FROM THE INSIDE OF THE HOUSING. THIS MADE A SIMPLE JOB, NOT SO SIMPLE.