Author Topic: Kohler CV491s cutting out issue  (Read 137 times)

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Offline palskidoo

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Kohler CV491s cutting out issue
« on: July 17, 2017, 10:06:42 AM »
Hello everybody,

I have recently gotten to the point with my stock kohler CV491s and chassis where I could take the mower for a buzz around my track. The track has some bumps on a straight-away just before a turn and I found that as I crossed the bumps and entered the turn the engine would cutout or hesitate. A second or 2 later then engine would come back to life as if nothing was wrong. So I am confident this is a fueling issue. Could the pump be bad? That would mean the gravity feed wasn't fast enough to compensate for the bumps? The carb is brand new so I can't imagine that is the issue however I'm open to all suggestions.

Thanks
Gun It N Run It Mow-tor Sports   



Offline cycloneracer

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Re: Kohler CV491s cutting out issue
« Reply #1 on: July 17, 2017, 11:14:57 AM »
Governor still on engine?   If no you need to modify the carb to handle the RPM's and to handle race conditions. 

The stock carb is designed to mow grass.  At a constant speed. 
Paul Krueger
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Offline palskidoo

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Re: Kohler CV491s cutting out issue
« Reply #2 on: July 17, 2017, 11:37:15 AM »
Yes governor is still on the engine and working.


Offline cycloneracer

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Re: Kohler CV491s cutting out issue
« Reply #3 on: July 17, 2017, 12:11:53 PM »
Probably loading it up with fuel from the bumps.   Need to vent the bowl externally. 

Or it isn't getting enough fuel because those carbs are weird. 

Paul Krueger
#150 Worlds First "sidewinder" FX (now dismantled)

#150 FXT  Sponsored by Zach Kerber Machine. http://zkbrmachine.com/

Easy Parcheesy Racing

Offline joe calabrese

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Re: Kohler CV491s cutting out issue
« Reply #4 on: July 19, 2017, 08:53:13 PM »
I would just like to add I just encountered the same problem with my CV492 and come to find out that the solenoid was going bad on the carburetor so I ordered a new carburetor with the new solenoid and now all is good with it.
so you might want to look at the solenoid and make sure that you are getting enough power to it and that it is clicking when power is applied and then check for proper ground.

I hope that this helps you out a little.