How difficult/expensive is it to rebuild a 500 Sportsman motor? It rattled, had no power, coughed and died. Oil was way overfilled. I have experience with two stroke motors buyt have never messed with a 4 stroke. What is the first steps to diagnosing what is wrong with it? It turns over fine and isn't making the typical two stroke metallic noises that signify piston cylinder issues. Compression check? What shoud the compression be?

Any other ideas?

Thanks

 

sounds like maybe a thrown rod. the first thing i would do before trying to get the motor out is take the jug off and check the crank and rod out (the cases will have to be split in order to fix it tho)

 

Ballpark cost at a dealer? I totally trust the dealer but would like to have an idea whether to just dump this thing or pay to have it fixed. I already have a new 800 Big Boss.

 

a shop is not going ot be cheap. if i were doing it and all that was wrong it would be around $800

 

Here's an email address to a shop that rebuilds Polaris engines. I saw it on the Polaris forum.

wolfbrosmotorsports@yahoo.com

Wolf Brothers Motorsports
812-467-1008

Remanufactured Engines- Mike

HTH

 

Shop said $4-500 max on parts and two days guided snowmobiling to Canada this winter.

Sleep better tonight.