TC10284 122 #1 Posted 13 hours ago I have a 108-5. Turning the key to Start does nothing. I have replaced the ignition switch and the solenoid with no luck. The wiring looks factory from what I can tell. I can jump the solenoid and it starts fine. I can use the pull start and it starts fine. On the voltmeter, I show 12.5v. As soon as I turn the key to Start, it drops to 0. Battery is good. But also tried booster pack just to be sure. I suspect the pto safety switch or the neutral safety on top of the transmission. The pto safety switch I'm wondering if there is a cheaper option than $50 to $70 The part is listed here: https://www.partstree.com/parts/toro-109327/ Share this post Link to post Share on other sites
gwest_ca-(File Mod) 12,522 #2 Posted 12 hours ago Where are your tester leads when it drops to zero? Or are you watching an in dash voltmeter? Share your model and serial number so we can look at the correct diagram. Share this post Link to post Share on other sites
ri702bill 13,275 #3 Posted 6 hours ago A long shot here - but does that switch not look like a refrigerator door switch?? Perhaps a search of the actual part P/N can reveal its usage... Share this post Link to post Share on other sites
TC10284 122 #4 Posted 3 hours ago (edited) 9 hours ago, gwest_ca said: Where are your tester leads when it drops to zero? Or are you watching an in dash voltmeter? Share your model and serial number so we can look at the correct diagram. I haven't got to the multimeter to test yet. Just watching the tractors own voltmeter and basing off experience from 300 and 400 series. I would share the model/serial but it is faded off. I could share the engine model. Edited 3 hours ago by TC10284 Share this post Link to post Share on other sites
TC10284 122 #5 Posted 3 hours ago 3 hours ago, ri702bill said: A long shot here - but does that switch not look like a refrigerator door switch?? Perhaps a search of the actual part P/N can reveal its usage... It does and that was a thought. I've searched for the part number on Google but only get Toro parts returned as results of course. 1 Share this post Link to post Share on other sites
953 nut 70,076 #6 Posted 2 hours ago 10 hours ago, TC10284 said: 108-5. Turning the key to Start does nothing. I have replaced the ignition switch and the solenoid with no luck. The wiring looks factory from what I can tell. I can jump the solenoid and it starts fine. I can use the pull start and it starts fine. On the voltmeter, I show 12.5v. As soon as I turn the key to Start, it drops to 0 This is normal, with the key in START the only connections being made in the switch are Battery and Starter. With the key switch in the OFF position, PTO in the off position, and transmission in neutral, you can test the PTO switch and the transmission switch with a multi meter. As you will see in the diagram the Tan and Purple wires of the PTO switch should have continuity and the transmission should have continuity between the two purple wires. 1 Share this post Link to post Share on other sites
953 nut 70,076 #7 Posted 2 hours ago 6 minutes ago, TC10284 said: I haven't got to the multimeter to test yet. Just watching the tractors own voltmeter and basing off experience from 300 and 400 series. An inexpensive multimeter will do the job. I would share the model/serial but it is faded off. I could share the engine model. Here is the manual for your Wheel Horse. Share this post Link to post Share on other sites
953 nut 70,076 #8 Posted 2 hours ago 10 hours ago, TC10284 said: The part is listed here: https://www.partstree.com/parts/toro-109327/ The part number you were searching for has been superseded but the new number is also unavailable. Rather than spending money on replacing parts until you find the bad part please test the components first. Safety switch seldom go bad unless they suffer a physical defect by being hit by something. Occasionally the wires will become disconnected and simply plugging them back in will repair the problem. If the PTO switch doesn't test as being good we can help you find a STDP (single throw double pole) switch that will work https://www.partstree.com/parts/toro-commercial-98-2392/ Share this post Link to post Share on other sites
953 nut 70,076 #9 Posted 2 hours ago 4 hours ago, ri702bill said: A long shot here - but does that switch not look like a refrigerator door switch?? Perhaps a search of the actual part P/N can reveal its usage... Most refrigerator door switches are a single pole single throw normally closed with two wires going to it. The PTO switch is a double pole single throw switch with sic connectors allowing half of the switch to be N/O and half to be N/C. They may look alike on the outside but are ver4y different on the inside. 1 Share this post Link to post Share on other sites
