I've never had a problem with my grizzly running hot like my wolverine does. The radiator got cleaned twice in 3 years and no problems. Wolverine you better clean it every time you ride itCommon problem with all ATV's that goes through mud. Had a guy in a new Rzr 900 trail that kept overheating last night. We sprayed and sprayed.. ran it through creeks and it was still overheating.
Pressure washing really doesn't clean the core out well. You need to put a high flow of water through it. Look for a radiator genie. I want to find trail model with a pump sprayer. Still, you need lots of water.
My grizzly got clog the first few times it was out. Ib gut got in the habit of turning it off but letting the fans run, and washing every time I was at the trail head. With that said you've all seen where I ride.. So that could explain it..lolI've never had a problem with my grizzly running hot like my wolverine does. The radiator got cleaned twice in 3 years and no problems. Wolverine you better clean it every time you ride it