How to Clean the Power Valves on Your Ski Doo Rev 600 SDI

The power valves on a Ski-Doo Rev 600 SDI snowmobile are also known as rotax automatic variable exhaust valves. The R.A.V.E. valves change the size of the exhaust port on your snowmobile, which boosts engine power when turning low to mid-rotations per minute. To maintain peak performance, the R.A.V.E. valves should be cleaned every 500 to 1,000 miles. Cleaning can be done in under an hour, and results in more effective use fuel as well as increased power and responsiveness. The R.A.V.E. valves can be identified by locating the exhaust ports on your Ski-Doo and looking just above them. The R.A.V.E. valves are mounted to the cylinders and are black caps with a red screw in the center.

Things You'll Need

• 5mm allen wrench
• Lint-free rag
• Mineral spirits
• Soft wire brush
• Carb cleaner

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Instructions

1. • 1

     Lift up on the clips on the outside of the R.A.V.E. valves and remove the caps. Remove the spring from the rubber bellow, then slide the bellow out of the way and turn the exposed disk toward the left to remove it.

   • 2

     Unscrew the bolts using a 5mm Allen wrench. There should be two bolts. Lift off the valve housing and gaskets. Slide the valve from the casing.

   • 3

     Use a lint-free rag dipped in mineral spirits to wipe the valves, bellows, casing and the slots on the cylinder clean of oil and build-up. Difficult to remove sludge can be cleaned with carb cleaner and a soft-wire brush.

   • 4

     Replace the valves, and tighten all bolts and screws. Replace the spring, and slide the bellow back into place.