Can a "wrench" out there explain how ATV clutches function, and the differences between brands? Yamaha touts their "constant tension belt." Does Yamaha have an internal wet clutch? How about Arctic Cat, is it also a constant tension belt? An Arctic Cat shop manager referred to "rollers" that require occasional maintenance, so this sure doesn't sound like an internal wet clutch, or is he referring to the variable-width pulley mechanism? Have never owned a belt-drive machine, but about ready to purchase, probably between a Rhino or Prowler. Opinions? Which is more reliable? Looking for a machine whereas one does not have to keep the revs up at low speeds.

The Arctic Cat clutch system consists of a centrifugal clutch (located on the output shaft of the engine) coupled to the belt drive CVT (continuously variable transmission). The clutch is actually inside the engine case, behind the compartment that houses the belt pulleys. The belt itself rides on a spring loaded driven pulley and a flyweight controlled driving pulley.

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AZ Jeff

Jeff, can't thank you enough! Is it a wet clutch as Honda and possibly others use? If this is the situation, I am leaning towards Arctic Cat for a SxS when the EFI model arrives. Correct me if I am wrong, but Polaris uses the belt for a clutch? How about Yamaha, a wet clutch?

Yes, the AC clutch is a "wet" type, and is exposed to engine oil.

The Polaris system relies on the belt to be the clutching device, and seems to work equally well. It certainly contains less parts in total.

I cannot speak for the Yamaha clutch system, as I have never seen one of them taken apart.

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AZ Jeff