4xbill Posted April 17, 2006 Posted April 17, 2006 I'm having trouble with the ignition on my 5216. With the stop switch connected, the engine won't start. When I remove the stop switch, the enigne starts fine. I ground it and it shuts down. The wire from the ignition key is grounded when off and not grounded when in the run positon. Seems ok. Once I connect the stop witch wire, it is grounded in every key position:(!. The coil is brand new. Any help will be much appreciated.
MrSteele Posted April 17, 2006 Posted April 17, 2006 My first thought is that you have a bad engine to frame ground, and or a key switch that has shorted out. I'd check all electrical connections, especially grounds, perhaps add a jumper across the switch to see if that allows the engine to start and run.
SmilinSam Posted April 18, 2006 Posted April 18, 2006 Is it possible the wire from the coil was damaged during installation. Could be a bare spot in it somehwere grounding it out.
4xbill Posted April 18, 2006 Author Posted April 18, 2006 MrSteele: I didn't check the frame ground. To kill the motor, I grounded it directly to the block once and then to the battery NEG. Will also check the key Switch, Sam: I replaced the coil because I thought that was the problem to begin with. I installed the coil, turmed the key and it started. Put all the shrouds back on, turned the key and nothing. That's when I figured out it was the stop switch. It's got to be a bad ground or short. Just not sure where to check. Maybe i'll jump from the frame to the block.
PatRarick Posted April 18, 2006 Posted April 18, 2006 Unplug the wires from the ignition switch, and disconnect the ignition ground wire from the engine. Check for continuity between that wire and the tractor frame. No continuity would point to an ignition switch problem. If there is continuity in the ignition ground wire with the engine and ignition switch disconnected, it would point to a short in the wire on earlier models, or a bad interlock switch on later models. Early models had an interlock system that did not affect ignition. They simply prevented the engine from cranking if the transmission or PTO were in gear. Here, continuity in the ignition ground wire would point to a short in the wire. Maybe rubbing against the frame, steering column, or some other area has worn the insulation away and a bare wire is resting against the frame. Later models had an interlock system where the engine would kill if the operator left the seat with either the transmission or PTO in gear. If the ignition ground wire shows continuity when disconnected, you have three more switches to check. One under the seat, one in the transmission linkage, and one in the PTO linkage. Pat
UCD Posted April 18, 2006 Posted April 18, 2006 quote:Originally posted by 4xbill MrSteele: I didn't check the frame ground. To kill the motor, I grounded it directly to the block once and then to the battery NEG. Will also check the key Switch, Sam: I replaced the coil because I thought that was the problem to begin with. I installed the coil, turned the key and it started. Put all the shrouds back on, turned the key and nothing. That's when I figured out it was the stop switch. It's got to be a bad ground or short. Just not sure where to check. Maybe i'll jump from the frame to the block. quote:I didn't check the frame ground. To kill the motor, I grounded it directly to the block once and then to the battery NEG. The block & battery negative are part of the frame ground quote:Originally posted by SmilinSam Is it possible the wire from the coil was damaged during installation. Could be a bare spot in it somewhere grounding it out.Sam states the coil wire not the coil.quote:I installed the coil, turned the key and it started.This was with out the shrouds installed.quote:Put all the shrouds back on, turned the key and nothing.This caused the problem.quote:It's got to be a bad ground or short.Your right it is a bad short to ground caused by the shrouds pinching a wire shorting it to the frame ground which the block is part of.
4xbill Posted April 18, 2006 Author Posted April 18, 2006 It's not the interlocks, test each one. They kill the starter. I looked for pinched wires, couldn't find any. The only thing I learned is that the spade terminal on the coil(that the kill switch wire attaches to) is always grounded???. I am so confused. Still need to test the ignition switch.
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