I just recently bought a 1876 Wheel Horse b-80 tractor, everything looks good and looks like the guy replaced the selenoid and ignition. When I try and start it, nothing happens, it doesn't even attempt to turn over. Battery is fully charged, not really sure what the problem is. I took off the ignition and saw that it has 5 prongs, then looked at the connector it connects to, and there is only 4 wires that go to that. It's either missing a wire or isn't suppose to be one where but im not really sure. On the ignition the prong that isn't getting a wire to it is labeled R, which i guess is Regulator so that seems important. Anyone have any idea if that wire is the problem or if it's maybe the starter? I tried to follow the wires and see if there was one that got cut or something but can't find it.
WH Wont turn over
76WheelHorse
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I just recently bought a 1876 Wheel Horse b-80 tractor, everything looks good and looks like the guy replaced the selenoid and ignition. When I try and start it, nothing happens, it doesn't even attempt to turn over. Battery is fully charged, not really sure what the problem is. I took off the ignition and saw that it has 5 prongs, then looked at the connector it connects to, and there is only 4 wires that go to that. It's either missing a wire or isn't suppose to be one where but im not really sure. On the ignition the prong that isn't getting a wire to it is labeled R, which i guess is Regulator so that seems important. Anyone have any idea if that wire is the problem or if it's maybe the starter? I tried to follow the wires and see if there was one that got cut or something but can't find it.
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Ok I'll try that later today after work and I'll put up some pictures too.
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1,616 Posts
Wow.....1876! That is one old wheel horse! 
Welcome to MTF. I have a B-80 also
Were you sitting on it with the clutch pedal depressed and the PTO
lever in the off (rear) position? All these are safety switches and will
not allow ignition if any or all are not activated.
Welcome to MTF. I have a B-80 also
Were you sitting on it with the clutch pedal depressed and the PTO
lever in the off (rear) position? All these are safety switches and will
not allow ignition if any or all are not activated.
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haha meant 1976.. but yeah just tried and still nothing. Im gonna go try right now with the jumper cables on the selenoid.
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Just tried to jump the selenoid.. nothing, so I'm guessing I need a new selenoid?
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Heres what I was talking about with the ignition and the connector.
![Image]()
![Image]()
The R terminal on the switch should go to the Bat+ terminal on the voltage regulator - usually the center terminal if they are 3 in a row.
If you have booster cables jump from the battery+ to the big screw on the starter. Make sure you have the tractor in neutral first. If it cranks it will rule out a starter problem.
Also make sure the engine block is grounded and the body of the solenoid is grounded back to the battery negative.
Need a wiring diagram?
Garry
If you have booster cables jump from the battery+ to the big screw on the starter. Make sure you have the tractor in neutral first. If it cranks it will rule out a starter problem.
Also make sure the engine block is grounded and the body of the solenoid is grounded back to the battery negative.
Need a wiring diagram?
Garry
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My B-100 has that same harness as someone switched it over to a
kohler magnum at one time. I was messing with the battery one time
and accidentally pulled out a few wires. I had a devil of a time getting
back in the correct order. Then it started and ran fine.
kohler magnum at one time. I was messing with the battery one time
and accidentally pulled out a few wires. I had a devil of a time getting
back in the correct order. Then it started and ran fine.
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Yeah if you can give me the diagram that'd be nice. Where is the voltage regulator located? Becuase then maybe I can trace the wire from that to see if I'm missing it.
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I connected the positive battery terminal to the starter bolt and it turns over, but now I'm getting no spark and I noticed the spark plug didn't fit in the wire that tight so maybe it's not the right one? Anyone know what spark plug it takes?
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Or maybe the points?
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Ya diagram shows up, thank you. I think I might just need to get a new selenoid and it should fix that. Just not sure why I'm not getting spark.
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Welcome to the forum! Did you ohm test your coil to make sure you have continuity between the + and - and the proper resistance to the spark plug port? Not sure what it would be on your model, hopefully some of the other wheelhorse folks can give you the specifications.
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Make sure both wires are plugged in to the ammeter.
You can use an Autolite #458 spark plug.
You can use an Autolite #458 spark plug.
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1,616 Posts
It should be a champion H 10 C spark plug I believe.
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A K-181 takes a J19LM Champion plug which crosses to an Autolite 458.
I don't do Champion spark plugs but you can use what you want.
An H10C is the correct plug for the K241 to K361 models and also the battery ignition K twins. The Autolite substitute is a 216.
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