Murray 17/42 will not start

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  #1  
Old 06-29-13, 08:52 AM
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Murray 17/42 will not start

I have a Murray lawn tractor with 17 HP B&S engine and 42 " deck. The 15-amp fuse would blow everytime I tried to start the mower. So I did a really dumb thing, jumped the fuse. After starting the mower, I mowed for 10 minutes and smoke started to poor out of the engine compartment. The wires to the engine are fried, insulation gone and one wire burned through. If I jump the solenoid, the engine starts and runs fine even with the fried wires. What is it about the wiring to the engine that could short out and cause this problem?
 
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Old 06-29-13, 10:40 AM
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Anything could have shorted and burned up, which is why the fuse is there. I don't know that it matters now though, because the harness is ruined. You'll probably be best off just buying a new harness.
 
  #3  
Old 08-18-13, 07:21 PM
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Blown Fuse

17 HP Briggs and Straton engine on a Murray Riding Mower 42" deck. Rewired the engine. After starting the engine, the 15 amp fuse blows. There are no shorts in the wiring. Could this be the result of a faulty voltage regulator, diode or stator?
 
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Old 08-18-13, 07:27 PM
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Does your engine have a regulator? I doubt it, but some of them did.

A diode will usually open and interrupt the circuit before the wiring harness melts. Sounds like something is wired wrong, pinched, etc... Have you tested any of it with a meter?
 
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