moe1965 737 #1 Posted September 1, 2023 Tractor I saved from the scrap yard is going to be a challenge. The motor does turn over if I stick a screwdriver across the posts on the solenoid but no spark. I also think it has a low oil indicator that will not let it turn over if it is working properly and I see the wires are snipped to it. The tractor is a 1990 toro wheel horse classic with a magnum 12 in it. Any suggestions why I would have no spark if I got it to turn over using a screw driver. Thanks in advance 2 Share this post Link to post Share on other sites
squonk 41,076 #2 Posted September 1, 2023 Magnum has a magneto. I have seen the coil wire broke off right at the coil under the engine shroud. Probably why it was in the scrap. PO couldn't figure it out or was too lazy to try. 1 Share this post Link to post Share on other sites
gwest_ca-(File Mod) 11,041 #3 Posted September 2, 2023 Just in case you did not know magneto ignitions are self powered. The ignition wire is grounded to shut the ignition off. Not grounded it should run. Do NOT allow any battery voltage to get to the ignition wire. That will release the magic smoke. The low oil switch simply breaks the power to the starter so it will not crank if the oil is low. If you want to remove the low oil switch there are special instructions to do so without damaging the switch. 2 Share this post Link to post Share on other sites
953 nut 55,197 #4 Posted September 2, 2023 Here is a wiring diagram for the ignition system wiring on your 312. If the PTO is not pulled up (off) you will not have any spark with the key in the run or start position. This wiring guide from the "Demystification Guide" should be helpful. 2 Share this post Link to post Share on other sites
