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I went into a puddle that just came over the floor boards and had to pull my UTV out with a rope because the drive belt started slipping. I know that the drive belt is in an enclosure that is vented and should not have allowed water in unless it came in against the pressure of the ventilation air being discharged or I have a cracked drive belt housing. My question is does anyone know of an aftermarket vent add-on for this housing that will vent at some point higher than the wheels. It seems to me that having the discharge point for the ventilation at the bottom of the engine (see attached image) is inviting this kind of problem. I know that there is a vent/drain on the bottom of the housing (indicated by the "A" on the image) to drain any water that might get in but I would like to lower the possibility of water entering the belt area. Thanks.

Sea Foam DID help but it did not completely solve the problem. The Mule would run after I cleaned the main jet but still had no power without the choke. I used the Sea Foam and it ran better but still needed the choke to run at low RPM's. I just got a call from the dealer I took it to and the carb had a part that needed replaced (in the float bowl?) and the 'pilot jet' needed cleaned. That service along with a belt replacement will cost $312.12. Thanks for the help. It did work but I had more problems than I knew.

I have an underused '06 Mule 610 with 275 hours on it that has been sitting too much. It starts just fine and idles with no missing or stalling but, when I try to accelerate, even with no load on level ground, it stumbles and won't go unless I use the choke. I haven't tried to take it out for a run because I'm not sure it will come home under it's own power but it does seem to run OK with the choke fully closed. I changed the fuel filter and checked the air filter but nothing else yet.