halftrackinfo

fuel system => carburetor and linkage => Topic started by: R.E.Co. on April 01, 2020, 09:30:49 AM

Title: Carb fuel air mix
Post by: R.E.Co. on April 01, 2020, 09:30:49 AM

Does anyone know the adjustment for the two smaller screws that adjust the air fuel mix on the carb? Thanks

Jon

Title: Re: Carb fuel air mix
Post by: spillmk1 on April 01, 2020, 12:41:19 PM

After a carb rebuild probably 1 1/2 turns out will get you going.
Then adjust each screw when engine warm for best idle.

Keith

Title: Re: Carb fuel air mix
Post by: coreyelliott on April 01, 2020, 04:23:13 PM

What Keith said is correct, and will probably get you close enough; however, I've always had the best luck using a vacuum gauge to adjust idle mixtures.  The motor has to be up to operating temp, then adjust the mixture screws for best possible vacuum.

Corey

Title: Re: Carb fuel air mix
Post by: yd328 on April 01, 2020, 07:14:47 PM

I just looked at a carb TM and it suggested 1 turn out on each to start after rebuild. Pretty much what these guys said. The vacuum gauge is nice to use.

Gary