Please pay Attention to the rear differential Fluid. I have two Riding buddies, One with a 97 400 prarie, and One with a 99 300 prarie. The 400 was filled with Mud and water due to the fact the rear axle seal leaked Letting mud and water In, he found Out to late, and was forced to pay for new Ring and pinions, bearings and seals. Expensive, Mind you We ride in Alot of Mud and water, the 300 had its rear diff contaminated also with mud and water, looked terrible, but did no damage, Upon inspection was found His seal was bad also.I dont know if this is a weak link or not, But Please pay attention to it if you havent in the past..It may be worth it!

Ron
96 xplorer 300
96 built warrior
88 fourtrax 70
87 cr 500
85 V-max bike

 

i have a 99 300 4x4 praire and i too have had some water in my rear end oil. i have not seen any leaks from the outside. i ride in water and mud most of the time.
has your buddies had to change out the cvt belt yet? i have 500 mile on my bike and i can start to feel the belt slipping a little. i measured the slck in the belt and it is out of spec allreay.