• 1. While the brand specific areas are no doubt great areas to find specific information on your sled and model, these areas usually lack information from members who are very knowledgeably about OTHER sleds, setup, etc. Simply because X-Member who rides a Ski-Doo does not go into the Polaris areas that often and vice versa (When was the last time you Polaris riders went into the Yamaha area? Yamaha riders when was the last time you were in the Cat section?)

    2. I know there will be clutch threads in these brand specific areas and that is fine, but by posting your clutching questions or advice in this clutching area you will be sharing with a much larger audience. So while X-Rider might not ride the same sled as Y-Rider, he might still have some info to share that will help riders of all brands with their setup.

    3. This are will eventually contain everything from how to properly break-in a belt, places that sell clutch parts, a tools section, setups, troubleshooting, rebuild info, spring rates, gearing information, etc, etc.



    Thanks to those who contribute and I hope those that know a lot about clutching jump in and get involved. You know who you are!

    You will also see that there have been other stickies in this area for each major brand. Within these stickies you will find links to other threads and areas that we think have some value. There is troubleshooting, setup, and general help threads in each. Remember to browse the other brands for they will contain tips that can be applied to any brand of clutch.

    Below are a couple of links to two great books that are helpful to those who wish to learn more about clutching. I have read one cover to cover several times and have the other on order.

    Olav Aaen's Clutch Tuning Handbook


    Cutler's Clutch Tuning Handbook

    Currently not available, not sure when it will go back into print


    Also if anyone has anything that needs to be added to this please shoot me a PM!

broken primary spring

dw8

Member
Lifetime Membership
Jul 19, 2012
42
11
8
What would cause my primary spring to break? 18 Arctic Cat M8000. Its been replaced but wondering what I can look at to ensure it doesn't happen again or if there is something else wrong
 

donbrown

Well-known member
Lifetime Membership
Nov 26, 2007
6,330
841
113
57
Los Angeles
What would cause my primary spring to break? 18 Arctic Cat M8000. Its been replaced but wondering what I can look at to ensure it doesn't happen again or if there is something else wrong
Wrong or bad spring or not installed correctly.

Did it fail immediately , over time . adverse conditions?

Ensure properly installed.
 

dw8

Member
Lifetime Membership
Jul 19, 2012
42
11
8
It broke within 200 miles I think. It was solid before I went out west, broken when I went to swap the weights back
 
Apr 21, 2010
184
15
18
Oh, then probably defective spring, that's mighty short life for a primary spring.
But could check and compare both sets of weights bushings, the cover plate bushing, how the cover plate bolts torque down the cover, besides rollers.
 
Nov 5, 2017
130
47
28
Nevada
I aced one too. White with red stripe. Made it 200 miles then lost rpms. Figured I'd drop some weight, but nope. The problem was spring broken. My guess, defective. But time will tell
 
Nov 26, 2007
1,322
808
113
utah
primary clutch springs frequently break (even new ones) due to the end of the spring qouging the metal of the face plate, which causes the spring to bind and break...fix is to put a delrin washer between the spring and the face plate...i think
Thunder Products sells them...i put one in every new sled and since doing that, i've never had a drive spring break..
 

Zrider

Well-known member
Lifetime Membership
May 7, 2003
594
219
43
Sparks, NV
I always make sure that with both the primary and secondary springs, there are no sharp edges on the ends of the springs that can catch on the clutch and cause it to bind and break. I use a file and take down any sharp edges on the spring ends. I also install a delrin washer in the secondary. So far, so good.
 

Readymedic

Well-known member
Premium Member
Nov 6, 2013
372
76
28
Saskatchewan Canada
Thunder products makes something called Glide Washers. They make two different kinds. One behind the spring and/or infront. They stop the springs from binding. I have them on all of my Cats.
 
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