You can look through the belt cover area with a flashlight. You could put a small white chalk mark to monitor when running.
Stand the machine on it's bucket, remove the bottom cover (4 bolts), look in there and poke around with a big screwdriver. You advance the drive plate by holding down the drive clutch with tape. See what's happening with 6th gear. You can rotate the crank and see what moves where and by how much.
This message was modified Sep 12, 2010 by trouts2