Does the scag have the control switches in one of the control arms? Have you tried taking a test light going to battery positive and hooking that into the feed supply side of the fuse( the side of the fuse that does not have battery power to it) if the test light is on this would mean that is shorting to ground somewhere within the harness at that time you'll need to wiggle each part in the harness while watching the light to go out or blink showing your close to the source of the short a close examination then you should locate it. Bare or chaffed wire.
SOURCE: Poulan Pro model 185H42ST dies after 30-45 minutes mowing
Put a carb kit in it. If that does not work replace the gas cap they are supposed to breath and if they get clogged it will create a vacuum in the tank starving the engine for fuel.
SOURCE: I have a 2006 Cub Cadet RZT 42 Zero Turn Mower
you have a wire that is grounding out, I would check the wire coming from the connector on the voltage regulator to the battery. This is the one in the middle position, look for a rub through and tape it up.
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SOURCE: BLOWING FUSES
Ist of all is 10 amp the proper size?
2nd if you bypass and whatever you are replacing the fuse with, is it warm, or hot to the touch?
If it is you have a direct short in you have a direct short in the electrical system. Check for bare wires,wires touching the motor or chassis that don't have a connector.
Hope this is a FixYa
Kurt
SOURCE: LTX1000 42" 18HP Kohler - Blowing fuse after 2-4 min mowing.
sounds as though you are on the right track
but be sure to check the wiring directly from the electric clutch on the front of the motor back to the switch
a wire could be pinched in the frame and shorting out intermittingly
look around and find those wires and move them around and look for chaffing and tightness
and what you could also do is to unhook the clutch at the connection to it at the front of the motor and engage switch and ride around and see if fuse blows and if not you may have an electric clutch issue
SOURCE: Craftsman zero turn - blades won't engage
The PTO switch contacts to operate the clutch that starts the blades is defective. I have replaced mine and the new one just failed again. Sears must know this is a defect problem but so far they are quiet about the problem
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