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Reload this Page Kohler CH18 carb
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  #1  
Old 12-06-2016, 03:02 AM
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cubby102 cubby102 is offline
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Default Kohler CH18 carb
Does anybody know of a fully adjustable carb for the ch18/20?

Looks like mines gonna need a rebuild but curious about adjustable carbs before I go ahead and do it
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Old 12-06-2016, 08:44 AM
J-Mech J-Mech is offline
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More than one....
There was an adjustable Walbro for them.
You can use a Kohler/Carter #26 off a K series but you have to change the throttle and choke shafts.
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Old 12-06-2016, 09:34 AM
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Will one from a kt 17 work? I think they were adjustable
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Old 12-06-2016, 09:45 AM
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Are you sure about putting one on a Command horizontal 18?
If so I need to know also.
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Old 12-06-2016, 09:54 AM
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I'm interested also cause my ch20 runs fine in the summer but takes forever to warm up in the winter, I need a little choke for like 10min or so which I think is excessive.
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Old 12-06-2016, 10:08 AM
J-Mech J-Mech is offline
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I totally read this thread wrong guys. I'm sorry. I thought he was asking about an M18/20. I have never tried one of those on a CH motor.

As far as needing to choke a CH for a long time, it is well known that those carbs are set too lean for emission reasons. Take it apart and drill the main jet one size larger. That will fix it.
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Old 12-06-2016, 11:22 AM
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Quote:
Originally Posted by cubby102 View Post
Does anybody know of a fully adjustable carb for the ch18/20?

Looks like mines gonna need a rebuild but curious about adjustable carbs before I go ahead and do it
The older CH carbs had an adjustable low speed jet that was set at the factory and a plastic cap over it to prevent tampering. I've removed the cap and adjusted them a little richer. As Jon mentioned you can give it a little more main jet by taking a set of small drills, find the size that will go in the jet and then go up one size. Dirty Steve just bought a few brand new CH carbs at a stupid low price before the seller figured out that they were selling at the wrong price. Anyway the new carbs no longer have the adjustable slow speed jet. Thank you EPA. Looking forward to the day when the morons at EPA hear the words "Your Fired"
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Old 12-06-2016, 11:48 AM
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Is there a welch plug where the jet is ?
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Old 12-06-2016, 12:18 PM
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Is there a welch plug where the jet is ?
I bought one off ebay that had a plug where the low speed jet was. I took a chance cause it was cheap.
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