camprc0001@gmail.com 0 #1 Posted June 30 toro wh 312-8 21-12k805 m12s engine, looking for low oil safety switch replacement instructions Share this post Link to post Share on other sites
camprc0001@gmail.com 0 #3 Posted June 30 First, thanks so much for the replies. I wished I had joined Red Square Forum earlier. Unfortunately, I jumped the gun a few days ago trying to remove the low oil safety switch and broke the outside of the switch although the wires are still attached. I don’t know if it could be superglue but that probably wouldn’t work. At first I thought I was losing oil when the tractor was running but I leaned that it was actually overfilled (maybe that was why the low oil alert light was blinking on the panel in the first place.) Also, my starter went out so I am trying to replace that also. I realized that was probably might fault too, but that is a separate issue. If an overfilled oil pan can cause the alert light on the panel to blink than I would probably have to put the tractor back together to see if it works correctly after filling the oil to the correct level. If not I am back to square one. At that point I guess I am going to have to take the tractor apart again to access the oil pan from the inside (lifting the engine from the lower part of the block that contains the oil pan.) to remove the low oil switch and replace it. In any event the situation is developing into a major project. I would appreciate any suggestions at this point. Thanks, Share this post Link to post Share on other sites
kpinnc 12,174 #4 Posted June 30 (edited) 3 hours ago, camprc0001@gmail.com said: If an overfilled oil pan can cause the alert light on the panel to blink I removed mine years ago because it caused all kinds of start and running issues. In short, I'm no expert. ...that being said, overfilling a Mag 12 shouldn't create issues with that switch. It's just a float, and is open or closed depending on oil level. If you're having issues, the switch is likely the problem. Even if you plan to replace it, you can bypass it temporarily and see if your starting issues go away with it. Edit: since the switch is open when oil is at the correct level, just unplugging it should bypass it. Edited June 30 by kpinnc 2 Share this post Link to post Share on other sites
midpack 866 #5 Posted June 30 I have a Magnum 12 that had a faulty oil level switch. I bypassed the connection and just make sure I check the oil often 3 Share this post Link to post Share on other sites
kpinnc 12,174 #6 Posted July 1 4 hours ago, midpack said: I have a Magnum 12 that had a faulty oil level switch. I bypassed the connection and just make sure I check the oil often Exactly. I never crank an air cooled engine without checking the oil. If something happens that causes 2.5 quarts of oil loss while running, you will know well ahead of time. Share this post Link to post Share on other sites
DeepH2O 66 #7 Posted September 27 On 6/30/2024 at 6:43 PM, midpack said: I have a Magnum 12 that had a faulty oil level switch. I bypassed the connection and just make sure I check the oil often What exactly did you do to bypass? My switch broke while trying to install (should’ve followed service manual to a T) and only one I found was $100. I would rather just install a NPT plug and bypass. What’s correct way to bypass? Just cut the plug? Thanks for help!! Share this post Link to post Share on other sites
953 nut 55,393 #8 Posted September 28 46 minutes ago, DeepH2O said: What’s correct way to bypass? Just cut the plug? YES The low Oil switch will close if the oil level is too low and be open (like the wires weren't connected) if the oil level is good. 1 1 Share this post Link to post Share on other sites
