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 27 kohler beavertail LT losing power 
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Post 27 kohler beavertail LT losing power
when I run my motor at around 3400 RPMs for a about a minute it seems to lose power and almost want to die out. Anyone have any experience with this, I just cleaned the carb and replaced the spark plugs!

Thanks in advance!

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25hp Yamaha


Mon Oct 25, 2010 2:31 pm
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Post Re: 27 kohler beavertail LT losing power
change your air filter?

Fuel system issue? air leak somewhere?


Mon Oct 25, 2010 2:46 pm
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Post Re: 27 kohler beavertail LT losing power
sounds like an ignition problem


Mon Oct 25, 2010 2:47 pm
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Post Re: 27 kohler beavertail LT losing power
What air filters are good to go with?

I guess I need to check the main fuel line to see if there are any cracks.

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Mon Oct 25, 2010 2:51 pm
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Post Re: 27 kohler beavertail LT losing power
My guesses are either water in the gas or a some other fuel delivery issue. A leak in your fuel line will do it. along with running to large of fuel hose. I run a K&N in my boat and it seems to work just fine and dandy. but I never had any issues with the OEM filter either tho. I would disconnect your fuel line from your fuel pump and get some gas in the bottom of a coke bottle and see if the fuel is seperating. If it isnt, then check for leaks in the hose. enjoy. :)


Tue Oct 26, 2010 12:51 am
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Post Re: 27 kohler beavertail LT losing power
Sounds like you are sucking in air/losing fuel pressure at the gas tank.


Tue Oct 26, 2010 11:07 am
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Post Re: 27 kohler beavertail LT losing power
Thanks, will check for cracks, the gas is brand new actually emptied old gas and cleaned tank dried for a couple days then got new gas. Anyone know what a good carb would be to either upgraded or just replace the factory carb, I will probably change the exhaust also, in the future.

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Tue Oct 26, 2010 6:51 pm
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Post Re: 27 kohler beavertail LT losing power
Why do you think you need a new carb? You can go to a mikuni, or a 30 carb/intake. You can also rebuild yours...

I would look elsewhere before jumping the gun though. Sounds kinda like ignition to me, like auto said. But air leak could be causing it too. I'd def look a little furthur, before replacing anything.


Tue Oct 26, 2010 7:03 pm
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Post Re: 27 kohler beavertail LT losing power
Definetly will troubleshoot and check things out prior to replacing the carb, but it is something I want to do oneday.

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Wed Oct 27, 2010 2:48 pm
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