I have a 7.5r27 kohler marine generator has less than 100 hours on total rebuild on motor and upgrade on generator electronics all work done by Nixon Power,Nashville Tn. It ran and worked fine,then it would crank and run perfect but would not make electricity. I havereplaced the printed circuit board replaced the only relay elect panel,cleaned the commentator and replaced brushes,when it cranks it only makes power for less than one second,only blinks I think I need to replace the generator regulator part no.228675,but can not find it anywhere. It has a very expensive price tag,not sure if it needs to be replaced,I am stuck at this point.I was told it was a 1989 year model. Where to find regulator and could this be the problem

Jack' Small Engines, or the maker.

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  Parts ' Kohler Marine

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  GENUINE PARTS AND ACCESSORIES. Rest assured, KOHLER genuine parts are built specifically for your marine generator - and are available when you need them.

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Diesel generator set: www.dieselgeneratortech.com

maybe this what you wanted you , Service Kit Kohler Marine Generator Models 4EF 5E 6EF 7.3E
Maintenance Service Kit Kohler Marine Generator Models 4EF 5E 6EF 7 3E

Maybe the start motor is damaged. You can check it first.

Power generation: www.dieselgeneratortech.com

Contact Nixon Power Services in Charlotte NC or TN. They can help you with a manual. You would have to purchase it

Contact Nixon Power Services in TN, they should be able to help you

Nixon Power Services in TN can help you with a part

Contact Nixon Power Services in TN

I have a kohler marine generator that shuts down when it reaches operating temp of 200/210 degrees. It runs for about 5 minutes. Already replaced impella and have sea water pumping through, coolant level is good. Any suggestions? Thanks

Can't search for a manual without model, type, serial, etc numbers...

A few things to take a look at:

1) Oil level / pressure sending unit. This is normally bypassed as long as the start switch is pressed. When engine starts, and switch is released, engine will die if sending unit is defective, or you are low on oil.

2) Exhaust temperature sensors. Older units were notorious for burning these up.

3) Cooling Water Temperature sensor. These cause trouble often, but mostly due to water pump impeller being eaten away by galvanic action and not able to pump water as effecively. End result is water temp higher than normal, which trips the switch, which kills the engine.

4) Alternator (generator) output not as it should. If output doesn't rise to proper level within a few seconds of engine start, the engine will be shut down.

5) Choke not working as it should

6) Bad fuel, bad fuel pump, clogged fuel filter.