buy a cd manual on ebay the trannys are very easy to do i took my trans apart lots of times very easy trust me . the tranny splits top to bottom instead of sideways so no parts fall out when you split the case the only special tool you need it a flywheel puller 8.00 .also you can get the breakdown pics at this site http://216.37.204.206/xtremepowersports/Ya...M/YamahaATV.asp