Kohler 6.5 kw generator in Carver 325

jgrothe

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Aug 23, 2009
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My generator has 200 hours total time. It had been running, underload for about an hour and it shut down. I am able to restart, but will only run while I hold the start switch down. New impeller 5 hours ago, and I have good flow out the exhaust. Oil clean/full, coolant full. Normally as you start the gen the engine starts, then you can hear what I believe is a relay close...then you can release the start switch and power is available. It starts fine, but I am not hearing that relay close, so it dies as soon as I release the start switch.

Any thoughts or experience would be appreciated.
 

Tommyfmu

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Feb 3, 2009
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It sounds like there is a ground problem to look for. Check that all the grounds have good terminals. I have a bit of a different problem; I think the brushes within the starter need to be replaced/rewound. The 6.5 runs like a champ forever but once I shut it down, it won't start up again until it cools down.
 

cwms

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You might want to post this in the engine's forum as it is an engine problem, not a Carver problem
 

pdecat

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It sounds like one of the safety shutdowns is stopping it.
Check the water supply flow if it starts after cool down.
 

Planeguy

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Kohler 6.5's must be the problem child. Mine shut down a few weeks before I winterized and when the tech came to look at it he said it had no compression. It has a Honda GX-360-E engine in it which of course they don't make anymore. I am looking into having the engine rebuilt at a Honda service center.
 

pdecat

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No compression in all cylinders???
Never heard of that
Is it cranking?
 

Gregory S

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Mine did what the OP's did. I changed the plugs and the problem went away. Easy fix.
 

Planeguy

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Mine will crank over easily. I had a Kohler certified tech look at it and when he checked the compression with a guage there was ZERO. He even put his finger in the plug area and cranked it over. He removed a small plate and said the valves are moving freely.
 
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