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Shocking (literally) engine

Started by kelLOGg, December 22, 2011, 05:14:57 AM

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kelLOGg

December 22, 2011, 05:14:57 AM
When I turn off my Kohler 16 HP Triad OHC sawmill engine I get a shock to my fingers as they hold the ignition key. Until I repair it I use insulated pliers to shut down. Only happens when I turn it off - not when starting or running. What causes it?  a bad ignition module? any advice on repair/replacement?
Bob
Cook's MP-32, 20HP, 20' (modified w/ power feed, up/down, loader/turner)
DH kiln, CatClaw setter and sharpener, tandem trailer, log arch, tractor, thumb tacks

bandmiller2

#1
December 22, 2011, 07:18:07 AM
Kel,I've never heard of this,must be a grounding issue.When you shut the power off the field in the coil collapses and should ground to the engine.Be interesting to hear what Sparks has to say. Frank C.
A man armed with common sense is packing a big piece

zopi

#2
December 22, 2011, 09:44:12 AM
Guessing the plug wires arcing to the engine and biting you...could be coil or condenser....
Got Wood?
LT-15G GO chassis added.
WM sharpener and setter
And lots of junk.

kelLOGg

#3
December 22, 2011, 09:50:48 AM
You got it, Bandm...

My problems started when I removed the ignition switch to get to the throttle lever to insert new friction washers in the lever handle. When I reinstalled the switch ground I inserted the ground wire between the plastic cowl and an apparently painted steel surface making a very poor ground connection. Thanks to your alert about a ground problem I re-examined what I had done and discovered my error. I re-installed the ground wire so the mounting bolt head made contact with the ground wire and a good ground was re-established to the engine block. Started the engine, shut it down and NO shock.
Thanks,
Bob
Cook's MP-32, 20HP, 20' (modified w/ power feed, up/down, loader/turner)
DH kiln, CatClaw setter and sharpener, tandem trailer, log arch, tractor, thumb tacks

scsmith42

#4
December 22, 2011, 12:00:41 PM
Bob, glad to hear that you solved your revolting problem....   :D
 
Scott
Peterson 10" WPF with 65' of track
Smith - Gallagher dedicated slabber
Tom's 3638D Baker band mill
and a mix of log handling heavy equipment.

kelLOGg

#5
December 22, 2011, 03:41:44 PM
Quote from: scsmith42 on December 22, 2011, 12:00:41 PM
Bob, glad to hear that you solved your revolting problem....   :D
 
Scott

Ooooh,  took me a while to get that one, Scott.  Like the baseball that gets closer and closer and then it hit me. I was definitely re-volted but no more.
Bob
Cook's MP-32, 20HP, 20' (modified w/ power feed, up/down, loader/turner)
DH kiln, CatClaw setter and sharpener, tandem trailer, log arch, tractor, thumb tacks

PC-Urban-Sawyer

#6
December 22, 2011, 05:12:40 PM
That was a well grounded solution to a shocking situation.

Herb

landscraper

#7
December 22, 2011, 05:16:58 PM
So there was a positive outcome that met no resistance.

Sorry, couldn't resist - love corny puns.
Firewood is energy independence on a personal scale.

T Welsh

#8
December 22, 2011, 05:36:35 PM
You have to love this forum and all its knowledge! Tim

caveman

#9
December 22, 2011, 07:11:12 PM
Some of you have stumped me with your puns.  Sometimes I have to go out on a limb and some times when I meet resistance, I just sit and meditate--OHM.
Caveman

PC-Urban-Sawyer

#10
December 22, 2011, 08:20:36 PM
Just remember MHO conductivity in that ground circuit make a better path for the electrons that travel there...

Herb

bandmiller2

#11
December 22, 2011, 08:23:38 PM
Any wierd thing electrical,first thing you check is the ground. Frank C.
A man armed with common sense is packing a big piece
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