Small Engine Troubleshooting Problems? Ask a Mechanic Now.
Make , model? Tractor, not mower? Is pto engaged with button or manual lever?
On top of the transmission is a single solenoid valve, it is the pto solenoid. Check it for voltage , key on, pto switch on. Engine does not have to be on. If it has voltage , the solenoid may not be working. No voltage, check the wire harness from solenoid back to the switch. I assume you have battery voltage to the switch ?
13 volts should work the solenoid, I would remove the solenoid and see if it will make a magnet when bench tested.
I would just remove the coil and test it before going into the valve. If it makes a magnet, then the valve may be stuck and you would want to remove the lower section.
It should grasp a screwdriver inside the coil and hold it from falling.
You would have t remove it, and with coil back in place, energize the coil and see if the valve moves. The inner section is what moves, it is not more than a pin the size of a toothpick, that moves up and down.
With coil not holding allen wrench, the coil may be bad!
It should just have a hex for wrench/socket and screw out.
It should just have a hex for wrench/socket and screw out
I have to leave for about an hour to go shop with wife. I will check back!
O'm back,let me take a look.
Th spool that the coil goes around, has flats on the base of it, to let you get a wrench on it and screw it out. The section with the needle in it should not need to be taken apart.
Do you have it out? Install the coil and bench test with 12 volts, energize the solenoid and see if the pin moves in the valve. If it does, the valve is ok. If not, the coil or the valve is bad.
Did you find the problem?
You do have full battery voltage to the solenoid? Do you have the shaft off the mower deck, to see if the pto shaft from transmission turns at all when you turn on the pto? If you do, and the shaft turns , but without power, the internal pto clutch can be bad! Did pto quit under use or was it working one day and not the next ?
Has oil been drained and checked for debris ? If pto clutch has burned up, there may be debris in bottom of case.
Pump? I didn't see anything about a pump.???
What pump was changed? Pump that runs hydrostat? I assume hydrostatic works? Brake cable was all I read you changed!
Need to test the pressure to the pto clutch, but I don't have manual showing test port. Need to see if clutch will hold pressure and if it is getting oil from the solenoid. But I believe there is one! The hydraulic oil temperature may have been caused by pto clutch! I will opt out and see if one of the Deere guys can add anything. Sorry.