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JD 116 hydro drive issue

Brian Hey yall,

Got a JD 116 38" mower. Hydro drive. Problem is after running for about an hour or so th tractor will not move under its own power. Let it cool for about 1 hour and it opperates as normal. Dealer told me that the hydro unit is not serviceable but I have a drain plug and dipstick on the unit. Anyone ever had that issue before? Anyone know what kind of fluid goes in the transaxle? Any ideas as to why this thing acts the way it does? THanks

Green Yellow Brian,

your hydrostatic motor might be worn out! The parts in the hydrostatic motor have very close tolerances. When the hydrulic oil is cold, it may be thick enough to drive the tractor, when it gets hot, it gets too thin.

I would try drainnig all the hydrulic oil first. Inspect the oil for a silver of gray color to it. This could mean that there is metal parts wearing in the hydrostatic motor. Fill it with clean oil and try again.

Use only hydrulic oil in the hydrostatic unit. Get this from your JD dealer or a lawn & garden supply. Do not use automotive transmission fluid!

I hope that this helps. :)



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