She has around 510 hours and 8100 kilometres. I just purchased the shop manual. I’m wondering if there is anything I really need to check or do. She seems to run fine other than a bit of a squeal at idle, in gear… And a tick some times at idle. The squeal was right after some deep water, from what I have read, is a wet belt? The tick, from what I read is the primary clutch weight bolts play (can be minimized with #8 washers)
I still need to check the differential and transmition fluids. I have done an engine oil change, and will be doing another this week with a new oil filter.
There is a bit of a clunk that I believe could be a u-joint when I’m going over whoops slowly (10-15kmh)… I haven’t noticed it when shifting gears… I’ll pay more attention when I’m out on it today. I’m wondering if it could be the clutch?

I have had many dirt bikes and trikes, all from the 1980’s. This is my first belt drive. First quad.
Thank you for any feedback!!