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Craftsman/Kohler Riding Mower Battery Connected in Reverse #5058912 03/30/19 07:52 PM
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benjamming Offline OP
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2000 Craftsman mower model 917.271131 with a Kohler Command PRO 16.5HP OHV model CV16S-43527 spec #43527 Family YKHXS.4262GB 426cc engine.

Battery was connected backwards as in positive cable connected to negative battery post & vice versa). Tried to start not knowing the problem. Not it will start but runs & dies in < 1 minute with a blown 15A fuse. Thoughts on what's bad? Regulator? Schematic is on page 31 of this PDF.

Re: Craftsman/Kohler Riding Mower Battery Connected in Reverse [Re: benjamming] #5058927 03/30/19 08:05 PM
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Linctex Offline
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Try the voltage regulator first.

If it still has a standard magneto ignition system, the battery polarity should NOT dictate "how long" it runs for.

Most riding mowers have a charging function to provide for headlights (rather poorly) and recharging the battery after starting (really poorly, I might add)

The electrical system almost never affects the ignition system.


"The evidence demands a verdict".
(Re:VOA)"it's nearly impossible to actually know the particular additives that are in there at what concentrations."
Re: Craftsman/Kohler Riding Mower Battery Connected in Reverse [Re: benjamming] #5058930 03/30/19 08:07 PM
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spasm3 Offline
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I would wonder about the regulator that is off the alternator. That or the ignition unit.

Last edited by spasm3; 03/30/19 08:09 PM.

13 elantra 78k 5w30 synpwr
03 chevy avalanche 83k synpwr 5w30
17 mazda cx-5 16400 miles m1 0w40
Re: Craftsman/Kohler Riding Mower Battery Connected in Reverse [Re: benjamming] #5059052 03/30/19 10:46 PM
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dwendt44 Offline
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Some single cylinder models do not have a voltage regulator.
The battery is only used for starting.


My 2¢


There's no such thing as:
Too big of a battery,
Too large of a gas tank,
or too loud of a horn,
or too bright headlights.
Re: Craftsman/Kohler Riding Mower Battery Connected in Reverse [Re: benjamming] #5059170 03/31/19 04:25 AM
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Donald Online Content
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Don't they have an electric fuel shutoff?

Your mower is a Husqvarna, so you can get parts at a Husqvarna dealer also. (The 917. means Husqvarna).

Disconnect the regulator and see what happens. You can measure the AC volts output of the alternator per the wiring diagram.

Mower should run for awhile without the feed from the alternator as the only current being used is for ignition and flue shutoff.


2015 Subaru Forester 2.5 engine/CVT
2015 Ford F250 w/Powerstroke
2016 Subaru Crosstrek CVT (wife's)
Re: Craftsman/Kohler Riding Mower Battery Connected in Reverse [Re: benjamming] #5059272 03/31/19 08:33 AM
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Eddie Offline
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I may be crazy but, I've had the vent on the gas cap do the very same thing. Check the vent valve on the gas cap. Ed


2014 CX5 Touring 2.5L :-)
Re: Craftsman/Kohler Riding Mower Battery Connected in Reverse [Re: benjamming] #5059282 03/31/19 08:39 AM
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HangFire Offline
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Does the mower blow the 15A fuse every time?


Various musings: http://hangfire.net
Re: Craftsman/Kohler Riding Mower Battery Connected in Reverse [Re: Eddie] #5059436 03/31/19 11:21 AM
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Donald Online Content
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Originally Posted by Eddie
I may be crazy but, I've had the vent on the gas cap do the very same thing. Check the vent valve on the gas cap. Ed


Not going to blow the fuse.


2015 Subaru Forester 2.5 engine/CVT
2015 Ford F250 w/Powerstroke
2016 Subaru Crosstrek CVT (wife's)
Re: Craftsman/Kohler Riding Mower Battery Connected in Reverse [Re: benjamming] #5059498 03/31/19 12:24 PM
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andyd Offline
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When I first got my sitdown, I put the ground shutoff wire to the + . The fix was a new magneto /gen. This is an old B+S 11 hp.


'16 Camry LE STP synth 0w20 and STP filter. the Fridge

1994 Ranger ,the Rat, 5w30 dino, STP filter

'16 Camry SE, Valvoline HM 0w20 and OEM filter
Thick oil is better grin2
Re: Craftsman/Kohler Riding Mower Battery Connected in Reverse [Re: benjamming] #5059692 03/31/19 03:34 PM
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Eddie Offline
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My Bad. I forgot about the fuse. Ed


2014 CX5 Touring 2.5L :-)
Re: Craftsman/Kohler Riding Mower Battery Connected in Reverse [Re: HangFire] #5069462 04/09/19 03:39 PM
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benjamming Offline OP
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Originally Posted by HangFire
Does the mower blow the 15A fuse every time?


Yes.

Re: Craftsman/Kohler Riding Mower Battery Connected in Reverse [Re: benjamming] #5070221 04/10/19 09:41 AM
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JimPghPA Offline
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The regulator and/or the ignition unit [both shown as rectangles on the schematic could be fried. The rectangle box most likley means they are solid state devices that have diodes and/or transistors, neither will tolerate reverse polarity. They will burn up in less than the time it takes for the fuse to blow. The solonodies/relays will not be damaged from the reverse current but the solid state devices are destroied.


Boy will I be happy when ALL vehicles on public roads are autonomous.


JimPghPa

Re: Craftsman/Kohler Riding Mower Battery Connected in Reverse [Re: benjamming] #5071462 04/11/19 11:17 AM
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meep Offline
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^^^^. and when 12V is lost, the fuel cutoff solenoid, if so equipped, will close, shutting down fuel flow.


2018 F150
2015 crv (wifey!)
Re: Craftsman/Kohler Riding Mower Battery Connected in Reverse [Re: benjamming] #5072366 04/12/19 08:33 AM
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mk378 Offline
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Unplug the regulator put in a new fuse and connect the battery (make sure it is the right way). If the fuse holds, that means the regulator is blown. The machine should start and run without the regulator, but of course the battery will run down.

Last edited by mk378; 04/12/19 08:34 AM.
Re: Craftsman/Kohler Riding Mower Battery Connected in Reverse [Re: mk378] #5079900 04/19/19 12:46 PM
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benjamming Offline OP
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The ignition module was removed from the lawn mower (disconnected from spark plug & unbolted from near the rotating flywheel). Set multimeter to ohm & checked between metal armature portion of the coil & the end socket (where the spark plug connects). It has complete resistance "1". Test Instructions

Removed the regulator/rectifier & checked for continuity between the center and each outer pole. Complete resistance.

It looks like both parts are bad & need replacing? Any other parts to check that are suspect?

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