I'm doing the first Hydro Gear (HG) service on an Exmark ZTM. Systems was drained / filled (new oil / filters)...I'm Now onto purging air from system. When I open the bypass valves, only the right seems to be working correctly...left wheel tries to spin when bypass valve is in open ('push') position. Any thoughts on whats going on here / ways to address without a dealer visit? Does it matter for the air purge? Thanks!
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