Hydraulic system overheating
check all hydraulic filters and check hydraulic valves. Filters is maybe not good or old, hydraulic valves is damaged or soiled. If your model hawe oil cooler check is it clean out and in!
Why does the battery go dead overnight after john deere z425
Need additional information...Check to see if it is the new battery or the electrical system first........ when the battery is "up", disconnect from the system. Remove both wires from the battery...connect the next day and see if the battery will crank the mower. I've experienced new battery's that have an internal short....Let us know whether battery or John Deere electrical system.....and we can troubleshoot from there...
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