I just changed both sprockets and the chain, so here's my 2 cents. The front sprocket nut is 36mm. Mine was so loose to take off I could have used my fingers, so that bent washer tab does work. Someone mentioned a big crescent wrench and I'll bet that might be adequate as I don't think 132nm of torque is alot. I also recommend the alignment tool as my left side adjuster needed an additional 1/4 to 1/2 turn to align the chain. I used the motion pro chain breaker which works well, but the work area is tight and I've screwed up a master link or two because I couldn't see well to hit the link perfectly or I tightened too much and cracked the link. My bad, but I'm sure the third time I do this I'll have it down with no screw ups. It does feel good to have done it all my self and finally have some experience to contribute to the forum. I've done two chains now and both sprockets, and a cush drive.
