Alrighty, so I have a 2004 sportsman 500 HO that has terrible vibrations at speeds of anything over 20mph. I have discovered that the majority of the vibrations are coming from the initial prop shaft connection at the rear differential.

I have removed the prop shaft and the splines are literally worn away to points, which gives the shaft a bunch of play. I took the atv out for a rip with prop shaft removed and the vibrations were virtually gone.

My question is regarding the removal/replacement of that drive shaft protruding from the rear gear case that drives the prop shaft. Is it difficult to remove? Can it be done without tearing the whole rear differential out? Stamped on the aluminum casing it says "remove internal lock before adjusting", what’s that?

Alrighty, so I have a 2004 sportsman 500 HO that has terrible vibrations at speeds of anything over 20mph. I have discovered that the majority of the vibrations are coming from the initial prop shaft connection at the rear differential.

I have removed the prop shaft and the splines are literally worn away to points, which gives the shaft a bunch of play. I took the atv out for a rip with prop shaft removed and the vibrations were virtually gone.

My question is regarding the removal/replacement of that drive shaft protruding from the rear gear case that drives the prop shaft. Is it difficult to remove? Can it be done without tearing the whole rear differential out? Stamped on the aluminum casing it says "remove internal lock before adjusting", what’s that?