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  #1  
Old 06-16-2020, 10:26 PM
madigan madigan is offline
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Default 2166 blowing fuse when engine is turned off

My 2166 with Kohler ch16 blows the red/red 25A fuse when the ignition switch is turned off while the engine is running. Replace the fuse, lights come on, engine starts and runs fine. PTO works fine too. What could be shorting as the ignition is turned to the off position?
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Old 06-16-2020, 11:13 PM
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Check your head light wiring.
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Old 06-16-2020, 11:15 PM
R Bedell R Bedell is offline
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First, welcome to OCC.....

First culprit I would look at is your Ignition Switch. The Switch normally has a Ground path to kill the Magneto (M Terminal on switch) and maybe has an internal short now.
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Old 06-17-2020, 09:54 AM
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Seems I read somewhere a feller had a similar problem and it turned out that the last revolution of the engine caused it to shake just enough that a wire grounded and caused a fuse to blow.
That said,
one might look at the Schematic to see what is powered by said blowing fuse,
and carefully look at the wires/components for things that are not like they otter bee
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Old 06-24-2020, 10:38 PM
madigan madigan is offline
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thanks all. The headlight wiring was indeed shorting, fixed that and the headlights work and the fuse has not blown. However, the starter motor will now not engage at all. Replaced the solenoid with no change. Turn the key and ... nothing. checked the voltages at the solenoid and have battery voltage at both the starter terminal and the solenoid terminal when the key is turned to the start position. So maybe the magneto kill in the ignition switch ?
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Old 06-25-2020, 08:13 AM
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Quote:
Originally Posted by madigan View Post
thanks all. The headlight wiring was indeed shorting, fixed that and the headlights work and the fuse has not blown. However, the starter motor will now not engage at all. Replaced the solenoid with no change. Turn the key and ... nothing. checked the voltages at the solenoid and have battery voltage at both the starter terminal and the solenoid terminal when the key is turned to the start position. So maybe the magneto kill in the ignition switch ?
A little confusing reading.....

Get to the basics.... Check the wires leading to starter and make sure they are clean, bright and tight.
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Old 06-25-2020, 08:18 AM
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This is the wiring diagram for the 2166. Check to see if you have 12 volts at the blue wire on the solenoid for the starter when you turn the key to the start position. Also did you replace the ignition switch by any chance? Reason I ask is we have seen on more than one occasion the switch had been replaced with one from TSC or like and it was the wrong switch.
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Old 06-25-2020, 08:41 AM
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This is a 2135 but it has the same setup as far as the starter goes as the 2166. The blue wire energizes the solenoid when you turn the key to start. Red arrow points to the wire.
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