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Kohler 7cmz21-rv rv generator. The problem is it won't start. it has spark and wants to start but when you release the start switch it loses spark and power to fuel pump.i Is it possible the pc board is bad, and what is the proper diagnosis test?

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6ya6ya
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Posted on Jan 02, 2017

mamicheddy
  • 79 Answers

SOURCE: i have a kohler rv generator that will start .

When this happens, this usually means that your genset is not creating voltage. First thing I would do is disconnect your remote start wire from the genset, this will eliminate the start switch inside the RV. For a shorted remote start switch can cause you genset to shutdown. Second, place a volt meter at a spot where you will be able to read genset voltage. If no voltage is available and your voltage regulator is new, then the problem is with either the rotor or stator. The rotor is the easiest check. You need to reach the brushes. Take a resistance reading, which should be around 20 ohms. Clean the rings and make sure there is enough length on the brushes, at least over 1/2". Next, flash the fields using a 12Vdc battery. Use rubber gloves when doing this. Place the positive side to the ring closest to the bearing and negative goes to the back ring. This is done while genset is running so be careful with rotating parts. Have a volt meter on the output wires. Once you flash the fields the voltage should increase to over 50Vac. If it does then your stator is bad since you installed a new voltage regulator. If the voltage does not increase when flashing, then the rotor is bad.

Posted on May 09, 2009

  • 153 Answers

SOURCE: electrical wiring for kohler engine

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


Posted on Apr 29, 2009

  • 109 Answers

SOURCE: when I try to start my kohler rv gererator all I

I would try to charge the battery or replace it.

Posted on Jun 18, 2009

protek480
  • 1714 Answers

SOURCE: I have a 1992 Itasca Toyota RV with a electric issue

Is there power at the gen? The transfer switch may not be transferring power over from gen. Check it at the gen first thing.

Posted on Aug 06, 2009

  • 5603 Answers

SOURCE: kohler confidant 4 generator service manual and wiring diagram

First thing is to check oil level as low oil pressure will shut it down.

Posted on Aug 11, 2009

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