i told you this and yes that is the one. try it. it was the best thing i ever did to my sled. The way you clutch youre sled totally determines its power characteristics. You always clutch to run where youre machine makes its amx power. In youre case your and my machine make 56 hp at 7200 rpm. i clutch mine to run at 7500rpm because i feel it is stronger but i can also except the fact that my engine is under more stress running at this high rpm. Fans are only suppose to rev at 7000rpm + or - 200 rpm. And no your machine will not overrev by adding this spring.
Take the center bolt out and then screw it back in just a little bit, 2 turns or so. Then take the outer 6 bolts off, loosening all a little at a time. This will relieve most of the pressure when the cover is out and resting on the center bolt. Take the center bolt out and the cover is off. The tension is not that bad on your sled. The outer cover and spider assy have a X marked on them. Put them back together so they line up, this is becaused they are balanced. And there you go.
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