I'm working on a Hustler Fastrak SD 928374 with Hydrogear transaxles. I replaced the o-rings on the oil pumps as well as a fluid and filter change. I purged the pumps using the hydrogear method. The left axle works perfect but for the life of me, I can't get the right side to build any power. I've purged and purged and purged. The best I've gotten is the drive works off the ground at half throttle or less. As soon as I run the throttle up, it loses what little power it has and the wheel stops turning. Both forward and reverse is equally weak. Is there a trick to getting out stubborn air pockets? Or is there something else causing the issue? It worked just fine before the fluid change.
Thanks
Chad