Hello, I am new to the forum and am excited about talking to you guys about mowers. Problem in a nutshell Installed new parker pump---result---- works perfect in reverse will not work at all foward. Purged system etc... I have a Dixon Grizzly ZTR with 2 (10cc parker pumps and parker wheel motors) also tank and filter. Was mowing the other day and the left side kept getting weaker and weaker and finally quit. I bought a new parker pump and installed it (yes I changed the fluid and filter) and now it pulls in reverse fine but wont move foward. Of course I had to take all the old fittings off my old pump to put on the new one and could it be possible that something is out of adjustment. I purged the system by running the mower at idle and moving both lever foward and backward several times. If the brand new pump is bad then why does it work perfect in reverse? I checked too for leaks in the hoses, etc... Any ideas or ways to troubleshoot or heck even fix it? Surely the new pump isn't bad.