Question about Kohler CH25 PA-CH730-0040 Command Gasoline Engine

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How much voltage should i get from the b+ on the voltage regulator on a kohler ch25 motor

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This is the terminal from / to the battery with engine off it should read static battery voltage, with the engine running it should read anywhere from 13.6 to 14.2 volts

Posted on Sep 16, 2009

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Posted on Jan 02, 2017

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KOHLER SMOKES STARTS UP ONLY HOT OR COLD,NO SMOKE WHEN RUNING


look down inside air cleaner before starting next time , if theres more than a finger full of motor oil in there then your head gaskets are going

May 20, 2014 | Kohler CH25 PA-CH730-0040 Command Gasoline...

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Getting NO power from the MR2 160/2 Mecc Alte Spa altenator stator. Generator repairman said he didn't find anything wrong using his voltmeter. Measured 6 vac out. I tested caps and they seem good....


There are a few more components to check in the system. From the information provided this is not a Kohler generator as Kohler makes all their own AC alternators under 350KW, seems you may have just a Kohler engine (probably a CH25). Cannot find any info on the voltage regulator which leads me to believe it may be integrated into the main controller. Curious to know who the manufacturer is. If the capacitors are good, try checking the diodes. A volt/ohm meter with a diode check will do. Voltage reading on one side and nothing on the other. If you have no access to a diode check feature, try reading it through a battery NOT SHORTED TO BATTERY hook a meter to a battery and put the diode between one of the leads to the positive, one way will read voltage the other will read open, no voltage, or OL. Look for any fuses or breakers blown / tripped. 6 VAC on the output is about residual voltage meaning voltage the alternator makes without any help from a voltage regulator or field voltage. This usually means the alternator / rotor windings are still good. This alternator is brushless so you could seperately excite this unit via a 12V battery through your field. Look for your exciter field winding, it should have some kind of label on it saying F+ and F-, apply 12V here momentarily on + & - respectively with the unit running and you should see your output voltage spike. This tests the alternator. If this tests ok, then check to make sure your wiring / fuses from the alternator to the controller or voltage regulator (voltage sensing leads) are ok. If all these check ok, it is likely you have a bad voltage regulator.

Jul 15, 2011 | Kohler Electrical Supplies

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Kohler ch730s runs but battery dies while engine is running.voltage regulator?


you may be correct...to verify that the stator is working, you can disconnect the two either white,gray,or yellow leads that go into the regulator/rectifier.these come off the stator. You will need to use a multimeter set to "ac" to check this. Set the meter to read at least 100v ac. them ,while engine is running, check the voltage on these leads...should be around 30VAC..If this voltage is present then you can rule out the stator.

Dec 22, 2010 | Kohler CH25 PA-CH730-0040 Command Gasoline...

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Necesito manual tecnico para la reparacion de un motor kohler de 20 hp y de 25 hp. por favor me es muy urgete . SI ES POSIBLE EN ESPAÃ?OL MUY AGRADECIDO POR SU APOYO


No hay ningun manual en espanol para este motor CH730..segun su sitio web. Encontr? este manual en ingles..Por favor p?ngase en contacto por el servicio al cliente a ver si lo tienen en espanol (Kohler Engines). http://www.kohlerengines.com/onlinecatalog/pdf/tp_2428_b.pdf

Nov 12, 2010 | Kohler CH25 PA-CH730-0040 Command Gasoline...

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THE MOTOR RUNS BUT DOESN´T CHARGE THE BATTERY


Contact your local vendor.

The highest probability is replace the voltage regulator.

Have you added or modified anything electrical?

these regulators don't handle very much in the way of regulation and are really only designed to recharge the battery after starting.

Hope this tip helps.

R/
Davdi

Feb 12, 2010 | Kohler CH25 PA-CH730-0040 Command Gasoline...

2 Answers

Electrical wiring for kohler engine


I have a Ford LGT with a 14 hp Kohler K321AS engine. Go to Kohler.com and download the service manual for the K321 engine. The manual covers all of the K type engines and gives diagrams and details of all the different types of ignition and electrical systems. It is free. JS

Jun 01, 2009 | Kohler CH25 PA-CH730-0040 Command Gasoline...

3 Answers

Electrical wiring for kohler engine


Perhaps you would enjoy the entire service manual. Here it is: http://www.asberry.net/files/TP-2379.pdf


Feb 26, 2009 | Kohler CH25 PA-CH730-0040 Command Gasoline...

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