belt and clutch alignment issues

[alaskanbowtie]

My sled is eating belt big time . 3 belts in 500 miles , an Ultimax 2 an Ultimax 3 and a yamaha belt , The Ultimax belts lasted about 25 miles each and grenaded , the Yamaha belt lasted the longest , had to keep going back to it after they would blow . Ultimax belts hook up great . My clutches are obviously out of speck and I will replace the primary this summer and want to do the alignment then . I noticed if I grab the primary with both hands and pull up and down I can move the engine about 3/4" either way , the rubber flexs that much . Everything is tight and nothing I can see , after a good inspection , is broken . Do the rubber mounts wear out or is this normal movement ? I will adjust my clutches to spec as per spec page here on the forum . Can anyone tell me the easiest way to do this , loosen all mounts , (the bolt you can see in front of the motor if you look down ) or is it the one on the side of the mount between the motor and the frame ? Should I make a limiter for it like is sold at MPI , is it necesary , it's only stock with few simple things . I know this is alot at once , just things going through my head . THX

 

[Chance]

First things first...find out why the engine is moving excessively. Any amount of movement changes both your center to center distance and the parallelism between the two clutches. Have a friend move the engine as you are saying you can and get in there with a light so you can inspect things. Something is either broken, loose, or worn out.
Once that is corrected, you can move on to alignment.

 

[ModMMax]

Something has to be broken or really loose for the engine to move like you say it is. I don't think there is any mystery about what is happening to your belts. I agree with Chance. Cure the movement and then deal with the aligment.