I am a Honda fourwheelers guy and went out on a limb and bout my fiancee a 2005 Polaris Sportmans 400. So far im not very impressed but I think it may be lack of maintnaince from prev owner. I am already rebuilding the front diff. and it feels like it shifts into 2nd and takes off then it will go up and hit rev limiter and not shift and top out around like 25 mph? Im thinkin it may be the belt or belts (not sure first polaris)? Looking for suggestions on what it may be and now its sounds like the belt is coming aparts and hitting the plastic cover. Quad only has 700 or 800 miles on it.