Carburetor part

Cacti_Ken · Post by **Cacti_Ken** » Tue Mar 06, 2007 9:19 pm

Is the air/fuel mixture jet replaceable in the YS carb? Can a new adjustment screw and jet be obtained?

mike470 · Post by **mike470** » Thu Mar 08, 2007 6:34 pm

Hi Ken the air fuel mixture screw adjusts the mixture at idle. It is one of the new parts that come with the kit from MWM. The jet is just a small hole in the carb body that the tapered end of the screw fits it should be clear and undamaged for proper operation. hope this helps.

Cacti_Ken · Post by **Cacti_Ken** » Thu Mar 08, 2007 8:22 pm

Thanks Mike, what if the hole is damaged, can It be fixed? I dont' know if it is for sure though. But I imagine I could at least use a new screw. Just seems to me if the screw tapper was distorted then surely the hole must be enlarged.

Post by **wesk** » Thu Mar 08, 2007 11:02 pm

This is one of those days when a detailed digital pic is worth a thousand words.

Cacti_Ken · Post by **Cacti_Ken** » Fri Mar 09, 2007 12:10 am

Wes, What do you want a photo of, the mixture adjustment screw? I don't believe I can fulfill your request on a photo of the hole that it goes in.

Post by **wesk** » Fri Mar 09, 2007 9:36 am

Ken,
A photo of the damage you are describing. It sounded like you were describing either stripped threads or seat damage but it wasn't very clear in your text.

You'd be surprised what a little patience, some no glare lighting and experimentation can produce in a detailed photo. Here's the YS950S idle needle.

Cacti_Ken · Post by **Cacti_Ken** » Mon Mar 12, 2007 8:06 pm

Wes here is a photo of the mixture adj. screw.

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Post by **wesk** » Mon Mar 12, 2007 8:46 pm

Hello Ken,
If you can't find a new one just machine that one to the same angle but she'll be overall a tad shorter which won't really hurt anything. Just keep the length of the cone from widest point to tip at .155.