23 hp kohler not charging

kito169 · May 22, 2012

I am trying to help a friend of my daughter with her Scotts riding mower. It is an S2348, 2002 model. The 23 hp Kohler motor is not charging the battery. I found a little info on line but not much. I checked the center wire on the voltage regulator/rectifier and it has 12 volts so the wire from the battery to there is good. I checked the magnets on the stator and they are good. I changed the reg/rectifier and still no charging. what do you folks suggest? I have the same engine on my Yardman mower and it is putting out 14.2 volts. Thanks for all your help.
Rick

barnE · May 22, 2012

I think charge rate on this is very low. Might not even notice needle fluctuation. Check with dealer. Dave If batt is bad will not charge.

eremoao · May 22, 2012

Might be a stupid idea, but are all the connections clean? At the battery, the selinoid? Are all the wires good, any broken?

eremoao · May 22, 2012

Might be a stupid idea, but are all the connections clean? At the battery, the selinoid? Are all the wires good, any broken?

danofarming · May 22, 2012

I went through this with a briggs, It was a bad voltage regulator.

pete 23 · May 22, 2012

Even with a bad battery you should notice a difference in voltage at battery from not running and when it is running. To check the stator windings ( now it has been a long time since I did this) but you unhook regulator, determine the two wire ends from stator and a volt meter hooked between them should read 28 volts if stator is good. You are reading ac voltage so you set meter for ac. I guess I would refer to a manual just to be sure. Memory some times plays tricks.

Jon Hagen · May 22, 2012

Just to add, when testing those stator windings, in addition to checking AC output with the engine running, check both stator wires for a short to ground (engine block) with an ohmmeter.

It should read infinity from either stator wire to the engine block.

A couple years ago I worked on a "no charge" situation in a JD 318 with Onan engine.
It made the normal 30+ volts across the two stator leads, but would not charge. I found the stator was shorted to ground at about the mid point. When connected to the good rectifier / regulator that grounds to the engine, it would not charge. Replaced the shorted stator and it charged normal.

showcrop · May 22, 2012

I just went through this with the Kawi on my ZTR. turned out to be a bad battery connection. Fortunately I found it before digging very deep.

JerryS · May 22, 2012

I just had this problem with my JD zero turn. It turned out to be a blown fuse---one of those little flat things that looks like a guitar pick.

Bob M · May 22, 2012

Sounds like a bad flywheel stator. You can test like this:

Remove the connector from the rectifier/voltage regulator. Attach an AC voltmeter to the connector's stator terminals (the two outer connector terminals). Now run the engine at governed RPM and observe the voltmeter reading. A good stator will develop at least 28 volts AC at 3,600 RPM. Less or no voltage indicates a bad stator.

You can also do a stator resistance check at the connector. Measure across the same pair of terminals above. A good stator will read 0.1 to 0.2 ohms. 0 ohms says the stator has a short; infinity means it's open.

El Toro · May 23, 2012

Do what Bob M suggested. It's probably a bad stator. Hal

23 hp kohler not charging

kito169

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barnE

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eremoao

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eremoao

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danofarming

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pete 23

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Jon Hagen

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showcrop

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JerryS

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Bob M

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El Toro

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