Greetings all. First post here. I have enjoyed reading through this forum to help make my decision in buying my 04 Sportsman 600. It has 284hrs and 28xx miles. It has the kokusan ignition. It runs well but it does need a full service. It was used by a hunting outfitter for food plot and trail maintenance. Overall condition is good. The idle seems to vary randomly at times. I also noticed the lights sometimes go dim when idleing. However has had no starting issues. Maybe the regulator?

I am wondering what can I do to make it run better. Not looking for performance mods. It has plenty of power for me. I wish to note that I will not be using polaris fluids. I will use fluids I can get in my small town here in the mountains. I have exhausted myself reading arguments about fluids in polaris machines. Being a former owner operator I have always used rotella. So I am looking at rotella t6. However I would like to know which is best at keeping the clatter of the twin down. It kind of bugs me. Is there a recommended additive maybe? As for plugs, am I right about using ngk’s? I have also read of guys using universal tractor fluid in the trans. This is of interest to me as I always have plenty of that stuff around. Otherwise I understand anything acceptable in a normal transfer case is fine, right? Rear diff is synthetic 80w90? I also read you can use JD Hygard in the front case. Is this accurate? There is a JD dealership not far from me. I also run a k&n in everything I can. Will I be OK using one with stock jetting? I assume it’s all stock. However it does not seem to have a lean condition as I have read is common in these. As for coolant am I OK with using the same stuff in my diesels? Not an extended life but a HD coolant with SCA’s.

I think that’s it so far. Looking forward to getting it ready to hit the trails and do some work!