Join Date: Jan 2011
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Not so stock answer...
The pretension can be anywhere from 6 to 25 lbs. You can measure what it is by using a fish scale. Remove the belt, hook the end of the spring scale on the secondary's movable sheave (inside sheave) and pull at a right angle to an imaginary line that goes from the center of the clutch to the point of attachment (radius).
The higher the pretension, the quicker the backshifting. Usually, engines with higher HP need higher pretension in the secondary.
If your sled seems slow to backshift, it could be because the spring is weak with age. Inside the clutch, there are several holes. You can move the spring into a different hole that will put more tension on the spring, giving more pretension. Adding pretension in the secondary will also increase the max RPM the engine turns by about 200 rpm per hole, so be aware of that. Some guys use the spring adjustment to fine tune the RPM, but there is a possiblity that you can loose efficiency in the drive system and create too harsh of a backshift by doing that.
Those Team clutches are very hard to open, that's why all the Polaris sleds have the tool. The torx screws are a PAIN! I have tried several different manufacturer's tools to have one that will do 'em every time, but they still twist or break. Sometimes a little heat is necessary, I even bought a small torch to heat just the screw, but still twisted a new bit on the last one I tried to open. I don't like things I can't work on. There's got to be a secret!