Johnner 2 #1 Posted August 27, 2022 When I engage the PTO partial for mower, the engine stalls. What would cause this ? Share this post Link to post Share on other sites
Johnner 2 #2 Posted August 27, 2022 When I engage the PTO partial for mower, the engine stalls. What would cause this ? Share this post Link to post Share on other sites
ineedanother 1,365 #3 Posted August 27, 2022 Safety switch on your seat most likely... 2 Share this post Link to post Share on other sites
Johnner 2 #4 Posted August 27, 2022 I will cut those and try it. Share this post Link to post Share on other sites
ineedanother 1,365 #5 Posted August 27, 2022 1 minute ago, Johnner said: I will cut those and try it. Negative, the switch needs to be closed. You can jumper them to bypass the switch temporarily to see if that's in fact the issue. 1 Share this post Link to post Share on other sites
Sparky-(Admin) 19,444 #6 Posted August 27, 2022 Safety switch probably. I would suspect the seat switch 2 Share this post Link to post Share on other sites
8ntruck 6,358 #7 Posted August 27, 2022 (edited) If the engine shuts off, it is likely the safety switch. If the engine loads up and then stalls, that is a mechanical issue with whatever is hooked up to the PTO. Edited August 27, 2022 by 8ntruck Share this post Link to post Share on other sites
gwest_ca-(File Mod) 10,485 #8 Posted August 28, 2022 What is your tractor model and serial number? Three different ignition systems used on the 416-8. Battery, magneto and back to battery. Wiring is different for each. Share this post Link to post Share on other sites
Johnner 2 #9 Posted August 28, 2022 I cut,capped and taped the seat safety wires. It is working great. Thank you all. 2 Share this post Link to post Share on other sites
23 Reo 221 #10 Posted August 30, 2022 Good work you've found the problem. When you get a chance install a new seat safety switch. It will keep you safe by shutting off the engine if you fall off the tractor with the PTO on. Share this post Link to post Share on other sites
TheMooseIsLoose 6 #11 Posted September 10, 2022 On 8/27/2022 at 3:20 PM, ineedanother said: Negative, the switch needs to be closed. You can jumper them to bypass the switch temporarily to see if that's in fact the issue. If you disconnect the wires to the switch will it work Share this post Link to post Share on other sites
ineedanother 1,365 #12 Posted September 10, 2022 56 minutes ago, TheMooseIsLoose said: If you disconnect the wires to the switch will it work No, that would be the same as getting off of the seat which opens the circuit. Sitting on the seat closes the circuit through the safety switch so power can flow. 1 Share this post Link to post Share on other sites
TheMooseIsLoose 6 #13 Posted September 10, 2022 53 minutes ago, ineedanother said: No, that would be the same as getting off of the seat which opens the circuit. Sitting on the seat closes the circuit through the safety switch so power can flow. to test it would you jump from one side to the other, there are 3 connections Share this post Link to post Share on other sites
TheMooseIsLoose 6 #14 Posted September 10, 2022 it this case yellow to brown wire, other is empty Share this post Link to post Share on other sites
ineedanother 1,365 #15 Posted September 10, 2022 Is this your switch? Share this post Link to post Share on other sites
ineedanother 1,365 #16 Posted September 10, 2022 https://a-ztractor.com/product/112418-u/ Share this post Link to post Share on other sites
TheMooseIsLoose 6 #17 Posted September 10, 2022 1 hour ago, ineedanother said: Is this your switch? Share this post Link to post Share on other sites
TheMooseIsLoose 6 #18 Posted September 10, 2022 yes, originally 111332 Share this post Link to post Share on other sites
TheMooseIsLoose 6 #20 Posted September 11, 2022 Yes, that is the switch, but i don't think that's the problem. It's been disconnected for a while & never had trouble with it., The motor dies when PTO is engaged but I can start tractor and not be in the seat. It worked fine until I took seat pan off to install new fuel line, remove mower deck to grease & change belt & sharpen blades Share this post Link to post Share on other sites
ineedanother 1,365 #21 Posted September 11, 2022 1 hour ago, TheMooseIsLoose said: Yes, that is the switch, but i don't think that's the problem. It's been disconnected for a while & never had trouble with it., The motor dies when PTO is engaged but I can start tractor and not be in the seat. It worked fine until I took seat pan off to install new fuel line, remove mower deck to grease & change belt & sharpen blades Unplugging that switch is like getting off the seat so it shouldn't have been that simple. Why was is unplugged? Have you tested the switch or tried just plugging it back in? Do you have a multi-meter? You should have continuity between the two spades on the switch when it is depressed. Share this post Link to post Share on other sites
TheMooseIsLoose 6 #22 Posted September 11, 2022 (edited) 1 hour ago, ineedanother said: Unplugging that switch is like getting off the seat so it shouldn't have been that simple. Why was is unplugged? Have you tested the switch or tried just plugging it back in? Do you have a multi-meter? You should have continuity between the two spades on the switch when it is depressed. Yes, i unplugged it years ago. The picture I added above shows the mating connector in the seat pan which is a push button type which will contact the seat when depressed but the push button is broken. So if I can start it with it unplugged why wont the PTO work. Its been working right along. Sorry about the confusion. Edited September 11, 2022 by TheMooseIsLoose Share this post Link to post Share on other sites
ineedanother 1,365 #23 Posted September 11, 2022 Yep, a bit confusing because without that safety switch, you shouldn't be able to engage the PTO unless the wiring had been modified (by jumping the connector or wiring) which it sounds like you didn't do. A short piece of wire with male spate connectors on each end would work to test it. Those two wires need to be in contact as if you're sitting on the seat or depressing the push button on a working switch. Share this post Link to post Share on other sites
TheMooseIsLoose 6 #24 Posted September 16, 2022 All fixed, I replaced the seat switch. 2 Share this post Link to post Share on other sites
peter lena 8,037 #25 Posted September 17, 2022 @TheMooseIsLoose take advantage of that recent , safety switch experience , and ENHANCE / IMPROVE the other similar hook ups . thats your opportunity , stop a problem and improve it at the same time . electrical / related problems , use a WIRE/ CABLE WRAP , along with a wire routing change , enhance grounding , eliminate tight / chafing / corroded , connections . make that problem go away , pete Share this post Link to post Share on other sites
