Re: PTO Electrical Problem
To answer your question, JP, I didn't realize the battery had reversed poles until I removed it to put in a different battery. I had tried to start the tractor with the battery reversed.
I'm a bit confused. How could the starter switch be the source of the short? When you pull the PTO switch, is something involving the start switch affected?
Starter switch can be overheated and melt some of the plastic inside. Allowing metal to metal contact when it normally should not contact. Hence creating a short condition.
Ignition switch is what controls power on and off to where the power is needed. Ignition switch in ON position sends power to a relay that in turn gives power to the PTO switch.
You need to test ignition switch with a multi meter in all 3 or 4 key positions to see if contacts listed make contact when they should, and not contact when they should not.
Problem is, as you stated, the schematic drawing is too low of a rez to be able to read it. I downloaded it and tried to enhance it some, but no joy.
Where all does a ground circuit on the battery typically go?
Negative from the battery runs to frame, then through all metal parts of the tractor unless insulated from ground. Also sent via wire, or metal contact, to different switches. When positive is attached to frame, you have reverse polarity. Somethings will run OK with reverse polarity, others will not.
I think we need to find a better schematic for you to follow.
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