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Onan Marine Genset 6.5 MCCK Series F


I have an Onan Marine Genset 6.5 MCCK Series F and I am having a problem with it shutting down when...

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Old 09-11-2012, 09:45 AM
grameric grameric is offline
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Default Onan Marine Genset 6.5 MCCK Series F

I have an Onan Marine Genset 6.5 MCCK Series F and I am having a problem with it shutting down when I put a load on it. It has a new carburetor with maybe has 3 hours on it. If I play with the load switch a couple of times and it goes through the initial spike, then it works fine. Does anybody have any suggestion? THanks.
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Old 09-11-2012, 01:30 PM
sdowney717 sdowney717 is offline
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Default Re: Onan Marine Genset 6.5 MCCK Series F

It seems like the load hits, the governer open the throttle and it dies.
It could be due to the main jet being too lean or the gas is bad.
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Old 09-11-2012, 07:44 PM
Max Thompson Max Thompson is offline
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Default Re: Onan Marine Genset 6.5 MCCK Series F

Why was the new carb. installed? Does the governor open the throttle all the way to the stop when the load hits it? Can you keep it going with a shot of carb. cleaner in throttle body when it starts to bog down? These questions all relate to fuel problems or throttle, how much of a load are you putting on it when it dies (total amps)?
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Old 09-11-2012, 08:13 PM
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Billy J Shafer Billy J Shafer is offline
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Default Re: Onan Marine Genset 6.5 MCCK Series F

Sounds like it is overloaded. If you are having to bump start the load.
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Old 09-12-2012, 01:58 PM
grameric grameric is offline
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Default Re: Onan Marine Genset 6.5 MCCK Series F

I know for a fact the gas is not bad. I am going to try and adjust the carb and see how it goes. The carb was replaced because it sat for a long time and I found a new one for the price it would cost me to rebuild. As far as the governor I haven't checked. I will need a second pair of eyes for that, I will try this weekend. I don't know the exact amps on the load I tried, but it would do it even starting the coffee maker. Thanks for the input guys.
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