As far as top speed goes, don't expect more than (just a guess here) 50-55 tops.

Have you had the quad since it was new? Once you get the carb/fuel mixture figured out, you might see if someone didn't change the sprockets too. You may have some good low end, but at the price of top end speed.

 

If you can, get a compressor and blow out all the jets and seats.

 

Hey thanks for being a good sport man, we aren't trying to be an a-hole toward you, just having fun. I'd focus more on the main jet if it's a top end issue. Clean the carb and filter good and see if that helps. Any backfiring going on?

 

I bought this thing used and it has been riden pretty hard and not maintained the way it should have been. I am not sure what the first guy did with it but I am seeing more of what the last guy did or didn't do everytime I look at something. So all in all I have several seals that need attention and I gotta get this power thing figured out.
I will pull it all apart tonight and see if I missed cleaning a jet and hopefully find the problem. Thanks again guys!

 

26" are pretty tall for a old 350. Not sure what stockers are. Maybe just more than the thing can handle in combination with being abused. Check the compression, may have worn out rings.

 

Stock Wolverine tires are 23 inches tall. If there are no performance mods to the machine it will have a hard time turning tires that are 26 inches tall. I don't understand why people put huge mud tires on the Wolverine, it was never intended to be a mud machine, it is a sporty 4x4 that is intended for trail riding. I am guessing that the quad was purchased with the tires already on it.