Need to access idle mixture screw

catman · Joined: 30 Oct 2019 Posts: 7 Location: 28025 **roughhouse**

I am going to install a Malossi Wild Lion exhaust. I will change the main jet and would like to adjust the idle mixture. The idle mixture screw seems to have a dark epoxy covering it. Just wondering what the best way to get the epoxy off. I have a replacement idle mixture screw that is slotted. This is a 2020 Genuine Roughhouse.

catman · Joined: 30 Oct 2019 Posts: 7 Location: 28025 **roughhouse**

I removed the carb today. The epoxy covering the idle mixture screw was very thin and chipped off easily with the corner of a small chisel. The brass idle mixture screw was not slotted as I had read on some other posts. I drilled a small hole in the center of the screw and removed it with a screw extractor. Installed the new idle mixture screw that is slotted. Reinstalled carb and adjusted. Idles much smoother and initial throttle response is great.

wheelbender6 · Posted: Tue Nov 12, 2019 5:31 am Post subject:

Do you think the original idle mixture plug could be slotted by using a dremel?

Alzero · Posted: Tue Nov 12, 2019 3:41 pm Post subject:

A Dremel could be hard to control. I’d try a thin hacksaw blade with a high tooth count to cut a slot in the top. A replacement screw would be the best answer.

catman · Joined: 30 Oct 2019 Posts: 7 Location: 28025 **roughhouse**

The replacement idle mixture screw was only a few dollars and it came with a new spring, the small washer and o-ring. You could easily slot the old one though.