Question about Garden
I cannot find the brake safety switch.Battery good, starter switch good, New solenoid, new 25 amp circuit breaker, continuity between the solenoid and the starter, neutral safety switch good, pto disengaged.
When I turn the key nothing happens.
There are several elements that go into cranking (turning over) the engine.
If the starter cranks try one more test. Run a small jumper wire from the positive post of the battery to the little terminal on the solenoid. You may have to take the small wire off the terminal, on the starter solenoid, in order to do this. When you apply this current from the battery to the terminal it should make the solenoid activate and the starter crank. This test bypasses the key switch and shows you the starter system is working. You could do this test first, if it works you do not need to do the first more basic test.
If these tests cause the engine to crank, but it will not crank with the key, then you know that you have a problem somewhere in your starter wiring and safety switch system.
Most modern riding mowers have the following safety switches:
On a John Deere (100 series) the starting current flows through the following items in this order:
The RIO is the Reverse Implement Option. It is a switch that latches and stays latched under certain conditions. It is activated by the RIS. The RIS is the Reverse Implement Switch. It activates the RIO. These two separate components work to allow the blades to spin while going backwards (without killing the engine)
The Seat and the RIO (the reverse latch not the button) are tied into the engine kill system by grounding the Coil. This same system controls the fuel shut off value beneath the carburetor. The Seat and RIO can keep the engine from running but they will not prevent the Starter Motor from cranking. Therefore, it you turn the key and nothing happens, it has nothing to do with the Seat and Reverse switches.
Note: In the run position, from the Key Switch, power flows to the Hour Meter, then to the RIO latch relay (not the RIS button), then to the fuel shut off solenoid. If you do not hear the Fuel Shut off Solenoid clicking on and off when you turn the Key Switch from off to run, there may be a problem in this circuit; including a possible problem in the Hour Meter. Of course none of this affects the cranking circuit. Your engine will still crank, it just won't run.
Posted on Apr 10, 2015
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Posted on Jan 02, 2017
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