SP543 0 #1 Posted November 1, 2010 My PTO on my WH is not engaging. I go to engage it and the engine looses spark, so i know it it something with the wiring that causes this. Any ideas on how to fix this issue? Thanks :thumbs: Share this post Link to post Share on other sites
C-Series14 15 #2 Posted November 1, 2010 What tractor is this on? Sounds like the seat safety switch is bad or not engaged... Share this post Link to post Share on other sites
JimD 3,345 #3 Posted November 1, 2010 It could be the pto safety switch. Share this post Link to post Share on other sites
SP543 0 #4 Posted November 1, 2010 its on a C141 hydro, this also happened on my old C120, but i just use that for plowing now. Share this post Link to post Share on other sites
SP543 0 #5 Posted November 1, 2010 No ideas or suggestions on how to fix this issue? Share this post Link to post Share on other sites
wheelhorsec85 5 #6 Posted November 1, 2010 take the seat safty switch and conect the 2 wires toghter . in other words get rid of the switch . see if this works out for you :thumbs: Share this post Link to post Share on other sites
rmaynard 14,909 #7 Posted November 1, 2010 You have two safety interlocks on the C-141. One under the seat and one on the PTO. Sounds like you have a wire in the wrong place, or your PTO switch is shorting the B+ to ground when actuated, causing the coil to lose it's 12 volts. Bob Share this post Link to post Share on other sites
Don1977 604 #8 Posted November 1, 2010 I don't think the seat switch has anything to do with it, if it was running until he engaged the PTO. Could be the PTO Switch but I don't see how, if the PTO switch was bad the tractor wouldn't start. Do you have electric PTO's on these tractors? Share this post Link to post Share on other sites
daemon2525 5 #9 Posted November 1, 2010 It very well could be the seat switch. I hate to admit it but i REPLACED an electric PTO on a JD thinking that it was bad. I was trying to engage the PTO while standing beside the tractor. You have to be sitting in the seat!! LOL Share this post Link to post Share on other sites
TT-(Moderator) 1,128 #10 Posted November 1, 2010 The operator presence (seat) switch and one of the two PTO interlock switches work together - usually in conjunction with a relay. If the operator leaves the seat when the PTO is engaged, the ignition power circuit is "killed". (broken on battery ignition models or grounded on magneto ignition models) The other PTO interlock switch - along with the DCL neutral or clutch switch - completes the starter relay (solenoid) trigger circuit only when the PTO is disengaged. Share this post Link to post Share on other sites
wheelhorsec85 5 #11 Posted November 1, 2010 It very well could be the seat switch. I hate to admit it but i REPLACED an electric PTO on a JD thinking that it was bad. I was trying to engage the PTO while standing beside the tractor. You have to be sitting in the seat!! LOL ditto :thumbs: Share this post Link to post Share on other sites
wheelhorsec85 5 #12 Posted November 1, 2010 hay tt man you explained it better than me . thats perfect :thumbs: Share this post Link to post Share on other sites
rueger-99 0 #13 Posted November 1, 2010 When the PTO is engaged the PTO switch is opened and the ignition circuit runs through the seat switch, which is wired in parallel to the PTO switch. Bypass the seat switch and you should be good to go. :thumbs: Share this post Link to post Share on other sites
