J
I have a 2002 Polaris Trail RMK 550. It had a crank seal go out. I had it professionally replaced from a great shop. I did the top end. I oiled everything really good, checked ring gap, put rings in with letter on top, followed torque specs, new gaskets and seals. I idle warmed it up and let it cool 4 times. I put a tank of gas through it mixed with oil and didnt go over 5000 rpm. Ran ok but a little sluggish. Rechecked head bolt torques and checked lower bolt torque by using starting fluid while it was running and didnt get any rev up. I am only getting 85 psi compression. Manual says I should be 120 psi. I tried two different compression testers. Any idea on what I could be doing wrong or what is wrong with this sled? Thanks for any help. This problem is killing me. I have been working on it a long time.