Our technicians are the industry's clutching specialists, racing and riding with our products year round. They know snowmobile and ATV drivelines inside and out - clutches, chains, sprockets, helixes, u-joints and more. And they test and use all the major brands - Polaris, Arctic Cat, Ski-Doo, Yamaha, Kawasaki, Suzuki & Honda. So, when it comes to snowmobile & ATV performance, our techs have the answers.

We plan on regularly presenting technical tips for snowmobiles and ATV's. See the list on the left for our current Tech Tips archive list. Select any tip in the list to view it. Feel free to print these Tech Tips out to save for future use, or check back here regularly to view new tips as they are added.

Remember, these are strictly Tech Tips. Feel free to contact our technicians directly with any part-specific, or application-specific questions.  Call 218-829-6036 for assistance.

Tech Tip #7:  Helix and Secondary Spring Installation
(for Polaris Snowmobile/ATV's and Ski-Doo Snowmobiles)

1. Install spring tab into proper hole in the clutch.

2. Install helix by inserting the spring tab into the proper hole in the helix. EPI helixes normally have a number 1 stamped by the number 1 hole position in the helix.

3a. For snowmobiles - Push helix down 1/2" to 3/4" on shaft. Align the key way on the clutch shaft and the helix and install the key. DO NOT push helix all the way down the shaft.

3b. For ATV's - align splines on helix and clutch (it can only go one way). Push helix down 1/2" to 3/4" on shaft. For EBS clutches push helix all the way down and install washers if necessary and install snap ring. For standard style clutches (non-EBS) see step 4.

4. Hold bottom half of clutch and helix from moving. Rotate the top half of the clutch counterclockwise approximately 1/3 turn. You need to locate the buttons in the clutch and rotate them past the next ramp of the helix.

5. Push helix down and install washer (if necessary) and install snap ring. Rotate snap ring so open end is opposite of the key slot in the helix.

6. Put clutch back on machine and check for proper preload tension.
 

[For more technical advice on helix and secondary spring installations, call our professional technical staff at 218-829-6036. Our technicians have been racing and training with the best - Glenn Erlandson. Glenn has over 25 years of racing experience.]