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  #1  
Old 07-27-2013, 09:10 PM
nielsorj nielsorj is offline
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Location: topeka, ks
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Electrical Short Somewhere

My neighbor has a 2004 Super Z (mod 926741 24 Honda 60" deck) and it is blowing fuses left and right. Sometimes they can mow 30 minutes and then the fuse (3 fuses total, 2 upper, one below, it's the upper one towards the rear of the mower) blows. Replace the fuse, it may go 5 minutes then blows; and then it blows every time you try to start. May start and go for 10 seconds, maybe just start and then blow without moving. Now find that as soon as you turn the start switch, before the starter even engages, the fuse blows.

Looked at the wiring under the instrument panel, found the wiring to the switch was burned and the plug was burned and broken at one connection, the (only) one with 2 orange wires attached to it (bottom left if looked at from the wiring end). Replaced the plug, unit started 3 times, started out to the yard to test, ran 20 seconds and failed. Every time after that it just blew fuse without engaging the starter, just when you started to turn the key. Clearly there is a short somewhere, but where? (Rhetorical question)

Perhaps you can help: What circuit is served by this particular fuse? (the upper one towards the rear of the mower).

No trailer to take it to the dealer and they don't pick up. Also, if you could give us a link the wiring diagram for this model, that might be helpful. Couldn't find a diagram on the manuals page for this model.
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Old 07-28-2013, 10:25 AM
hustlermidwest hustlermidwest is offline
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if you go to hustlerturf.com on the bottom of the page there is a link to manuals. Go to your model number and you should be able to find a wire diagram to help you find that short. If those wires were burnt that would tell me of a resistance somewhere in the line. Look for corrosion.

Brian O
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Old 08-09-2013, 02:10 PM
nielsorj nielsorj is offline
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An ending to the story, I hope. Neighbor finally found a trailer to borrow and took the mower to a dealer. They had the mower for 6 working days and it is now working consistently without blowing a fuse.

The cause?? Bad motor mounts, they say. That's all they replaced and the motor starts, runs and mows without blowing a fuse. No bad wiring anywhere to be found. When the mechanic pushed the mower to work on it one day, he noticed that the engine moved and wobbled, found that the motor mounts were bad, replaced them and no more shorting.

Now, how could it be that replacing motor mounts would be the 'fix' for a short?
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Old 08-09-2013, 02:18 PM
hustlermidwest hustlermidwest is offline
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We rely on the motor mounts for a ground. When the clutch keeps cutting in and out from lack of ground pop goes the fuse.

Brian O
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Old 08-10-2013, 08:53 PM
nielsorj nielsorj is offline
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After they brought the unit home, I looked for the 'motor mounts' that they replaced. Hardware store nuts and bolts, but nothing like I was imagining. The owners are going to ground the engine directly to the battery to be sure this does not occur again.

I still don't understand about the 'short'. I could understand if nothing happened when the ignition was turned on, but not blowing a fuse.
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Old 08-10-2013, 11:01 PM
hustlermidwest hustlermidwest is offline
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I'm thinking a spike was going on. Remember your charging system is on the engine side. With a ground coming and going anything is possible. Engine mount? You think of a cars mount with rubber and heavy hardware. It's just bolts and lockwashers on power equipment.

Brian O
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