If you’ve ever serviced a TRA primary clutch on a Ski-Doo, you likely know about the small cotter pins that are used on the pins that hold the rollers in the arms. Anytime you are installing roller pins of different weight (for tuning or elevation changes) the cotter pins often break when trying to re-use them. Typically, technicians will install new cotter pins to eliminate the possibility of them breaking. At times, these pins can also corrode, making removal difficult as well.
In an effort to provide components with even better durability and resistance to corrosion, Ski-Doo is now using stainless steel cotter pins in this location. This change started with the 2012 models. While it is still suggested to always install new cotter pins when the roller pins are being swapped, these new stainless steel cotter pins are going to provide better durability and easier servicing over the long term.