Runs OK but not AC power.
The Kohler 7.5 R had a possible three different voltage regulators that could be used.
You need to check there first. Also if you can get it the service manual for these are tp-5110 Which will show you how to test the regulator o the bench. There was a 5 6 and 7 pin regulator that could have been used.
SOURCE: Schematic
I looked for several minutes and this is what I found:
Kohler 13EOZD wiring diagram
I went to the Kohler site, entered the number and it cross referenced to the above number. The wiring diagram is on page 90.
Hope this helps!
SOURCE: Hello, I have a Kohler Marine Generator that says OC on the menu when I try to start it. Any ideas?
OC stands for Over Crank. How long does it take before the genset starts?
SOURCE: Have a portacable generator. model BS1550 w Runs
Breakers could be bad, but no power to all the plugs, including the 240vac plug indicates something else going on. Either residual magnetism has been lost (has it been a while since it been ran?) and needs to be flashed, capacitor or diodes in regulator are bad, or there has been damage to the rotor or stator. There could also be a problem with the brushes on the rotor as well.
Also, if engine is turning too slow, the alternator may not kick in as well. Make sure that you are turning either 1800 or 3600 RPM, though it is a little hard to do this without electrical output. You might try playing with the governor while a lamp with a sacrificial incandescent bulb is in it. If the engine speeds up, and the bulb lights, then governor needs to be adjusted.
SOURCE: Kohler 12res AC breaker flipping with no error listed
wat size c/breaker
6600 divide 240 = amp
rule of thumb
SOURCE: I have a new Kohler 12kw res generator on propane - backfiring
Is the outside air temp cold. These generators will backfire if it is real cold and if the propane pressure is low. It is suppose to be 11 to 12 inches of water colume at the generator fuel input. drygwals
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