Hydraulic Problem?

[rustycub]

I have a grunt noise and the deck jumps a 1/2" or so each time it grunts. This only happens for about 3 min after initail start. After the tractor heats up all is good. It makes it hard to get the correct mowing height.

[Rudi]

Try bleeding the system. Open the fill port in the reservoir and cycle the touch control 10-12 times. Should clear the air out of the system.

[Cecil]

Also make sure that the system is full of fluid.