Tried to start tractor; turned key to start, got a click (I suspect from the solenoid), and then nothing – dead as a stone. Subsequent attempts to start were unsuccessful…no click, no response. Following this occurrence I checked battery voltage as 12.6+ volts.
Diagnosis thus far using JD Technical Manual TM1760 for 325, 335 and 345 Lawn and Garden Tractors:
I began with Power Circuit Diagnosis – 345, on pg. 6-70, and found 12.64, 12.57 and 12.50 volts at Test Locations 1. battery + terminal, 2. solenoid battery terminal, and 3. X1 connector. I was unable to access Test Location 4, voltage regulator/rectifier battery terminal as the harness and connector are within the inaccessible space beneath the battery. For Test Location 5, delay module, with the connector disconnected, no battery voltage.
I’ve done a few other tests. I have tested the seat switch (pg 6-132) to be O.K.. Also, the PTO/RIP switch (pg 6-131) tests O.K.. I have not tried the brake/neutral start switch test (pg 6-130), yet.
I have also done the starter solenoid test (pg 6-125), although I have a question about the procedure. Test results: failed both parts of the testing. But, here comes my question about the procedure, and it relates to the ground connection to the engine. On the right side of the tractor, behind the oil fill/oil drain, the negative cable from the battery as well as two other ground wires are secured to the engine crankcase by means of a nut. Step 6 of the test procedure is: “Remove spark plug high tension lead(s) and ground to the engine.” I removed *all* grounds before continuing with the test…is that correct?
The first solenoid test connects a jumper to the positive battery terminal and briefly jumping to the spade terminal on the solenoid…if the starter runs (it did not), solenoid is good (so I figure it is not good). The procedure continues …starter does not run; go to the next test which is connecting the jumper between the two solenoid large terminals. Did that; result: starter did not run…if the starter did run the conclusion would be to replace the solenoid. And, if the starter did not run; replace starter. ? ? ? Replace both starter and solenoid?
Other tests recommended? The brake/neutral start switch test?
Any help/insight/suggestions of direction in which to proceed would be much appreciated. Need more information?
Thanks and Regards,