Need help figuring out why my mower won't start

S

stang8689

Active Member
Hey guys as some of you know i've been battling my 99 troy bilt 25 horse mower, was a simple oil leak but it was the crankcase so I had to pull the motor. I also had to replace the drive belt which was a royal pain. After several hours of work and fustration I finally got it all back together go to start it and all it does is crank 1 time. The starter poops up turns the flywheel 1 tooth and thats it. The battery is fully charged. When I pulled the motor There were only a few wires with clip on connectors and the starter wire. I remember a couple wires being hooked to nothing,1 was a solid yellow the other solid black, I tried grounding the black wire to the frame and no help. Any ideas of what I could of messed up or forgot to do when I put the motor back in? Thanks for any help
 
It sounds like one of the wires has stopped getting enough power, or there is corrosion on the Starter Motor stopping it from getting a clean flow of electricity.
 
I don't know what engine you have but most starter motors have two wires to them. One is a large red wire from the battery and the other is a smaller wire which gos to the starter switch after it gos through a lot of safety switches. Also there is another system that uses a external starter solenoid and that would only have a large red wire to the starter motor.
 
stang8689 said:
I cleaned the cable that bolts to the starter it's nice and clean, is there a way to test the wires?
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If you have a volt meter take a reading at both ends of the wire and they should be close to the same reading at both ends when the wire is under a load.
 
It only had 1 wire going to it I remembered that for sure and yes I can turn it over by hand. I didn't remove anything to do with the cylinder heads including wires and stuff like that just bottom end like pullies and stuff
 
crazyoldtractor said:
If you lawn mower has a fuel solenoid on the carb check to see that that is working correctly. If it isn't, then thats your problem.
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Might want to read the post again.

"Hey guys as some of you know i've been battling my 99 troy bilt 25 horse mower, was a simple oil leak but it was the crankcase so I had to pull the motor. I also had to replace the drive belt which was a royal pain. After several hours of work and fustration I finally got it all back together go to start it and all it does is crank 1 time. The starter poops up turns the flywheel 1 tooth and thats it. The battery is fully charged. When I pulled the motor There were only a few wires with clip on connectors and the starter wire. I remember a couple wires being hooked to nothing,1 was a solid yellow the other solid black, I tried grounding the black wire to the frame and no help. Any ideas of what I could of messed up or forgot to do when I put the motor back in? Thanks for any help"


I dont think the fuel solenoid would cause this.
Rob
 
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