The only thing I would add to the last post is before you take the old chain and gears off line your marks up and then it should be a slip off and slip on set up. Verify the marks still line up, spin it twice recheck and your out of there, becareful to seal the pan to t-cover well. Not tough just take your time and pay attention, your be fine. Come back here with any questions along the way, better to ask a dumb question than make a dumb mistake!