My friend wants to give me his Husky 48 ZTH in exchange for me fixing it. I'm guessing he would borrow the mower as a spare if the need arose. The right wheel is making a clicking sound and will not turn very fast. I don't know how to troubleshoot it to see if it's the pump or just the wheel motor. I might fix the wheel motor, but wouldn't spend the money to replace the pump. The mower has approx 800 hrs. on the clock. I think it has been well maintained also. If you have any suggestions I would appreciate your post.