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Craftsman/Kohler Riding Mower Battery Connected in Reverse #5058912
03/30/19 07:52 PM
03/30/19 07:52 PM
Joined: Jan 2004
Posts: 5,995
northern Alabama
benjamming Offline OP
benjamming  Offline OP

Joined: Jan 2004
Posts: 5,995
northern Alabama
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
03/30/19 08:05 PM
Joined: Dec 2016
Posts: 9,119
Waco, TX
Linctex Offline
Linctex  Offline

Joined: Dec 2016
Posts: 9,119
Waco, TX
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
03/30/19 08:07 PM
Joined: May 2010
Posts: 10,253
out there
spasm3 Online content
spasm3  Online Content

Joined: May 2010
Posts: 10,253
out there
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 12300 miles m1 0w30
Re: Craftsman/Kohler Riding Mower Battery Connected in Reverse [Re: benjamming] #5059052
03/30/19 10:46 PM
03/30/19 10:46 PM
Joined: May 2006
Posts: 4,132
Central Wisconsin
dwendt44 Offline
dwendt44  Offline

Joined: May 2006
Posts: 4,132
Central Wisconsin
Some single cylinder models do not have a voltage regulator.
The battery is only used for starting.


My 2ยข


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
03/31/19 04:25 AM
Joined: Mar 2004
Posts: 22,477
Upstate NY
Donald Offline
Donald  Offline

Joined: Mar 2004
Posts: 22,477
Upstate NY
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
03/31/19 08:33 AM
Joined: Dec 2003
Posts: 10,346
Florida, Cape Coral
Eddie Offline
Eddie  Offline

Joined: Dec 2003
Posts: 10,346
Florida, Cape Coral
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
03/31/19 08:39 AM
Joined: Aug 2013
Posts: 3,475
Central Maryland
HangFire Offline
HangFire  Offline

Joined: Aug 2013
Posts: 3,475
Central Maryland
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
03/31/19 11:21 AM
Joined: Mar 2004
Posts: 22,477
Upstate NY
Donald Offline
Donald  Offline

Joined: Mar 2004
Posts: 22,477
Upstate NY
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
03/31/19 12:24 PM
Joined: Sep 2004
Posts: 8,301
Marshfield , MA
andyd Offline
andyd  Offline

Joined: Sep 2004
Posts: 8,301
Marshfield , MA
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
03/31/19 03:34 PM
Joined: Dec 2003
Posts: 10,346
Florida, Cape Coral
Eddie Offline
Eddie  Offline

Joined: Dec 2003
Posts: 10,346
Florida, Cape Coral
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
04/09/19 03:39 PM
Joined: Jan 2004
Posts: 5,995
northern Alabama
benjamming Offline OP
benjamming  Offline OP

Joined: Jan 2004
Posts: 5,995
northern Alabama
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
04/10/19 09:41 AM
Joined: Aug 2009
Posts: 3,956
Pittsburgh,PA U.S.A.
JimPghPA Offline
JimPghPA  Offline

Joined: Aug 2009
Posts: 3,956
Pittsburgh,PA U.S.A.
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
04/11/19 11:17 AM
Joined: Feb 2007
Posts: 3,957
Southeast
meep Offline
meep  Offline

Joined: Feb 2007
Posts: 3,957
Southeast
^^^^. 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
04/12/19 08:33 AM
Joined: Sep 2015
Posts: 1,936
USA
mk378 Offline
mk378  Offline

Joined: Sep 2015
Posts: 1,936
USA
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
04/19/19 12:46 PM
Joined: Jan 2004
Posts: 5,995
northern Alabama
benjamming Offline OP
benjamming  Offline OP

Joined: Jan 2004
Posts: 5,995
northern Alabama
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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