hydro pulling

[dan4string]

first of all thanks for letting me post.i have a 98 36 inch exmark hydro that pulls to one side if i shift above 4th gear. i tried adjusting the tracking but no luck. thought it might be air but it doesn`t seem to get any better even after a hour or so running. i tried doing a search on the subject but no luck. can someone help? thanks again everyone

[bwiesner]

Check the relief valve on the hydro. If it is open it will cause this problem. It will be a bolt head sticking out of the hydro with a hole through the head. Or maybe a bolt head with a pin in it. Make sure it's tight. Later Butch