Fuel Mixture Screw Adjustment

Courtesy of: Mark A. Luby Howard

Here are a few pics for you other newbies who may want to richen your carbs without dismantling parts of the whole carburation system. This took me a little while to do (maybe a bit over an hour), but I was experimenting as I went along. I appreciated the info given along the way with the carb rejetting procedures, and thought this might provide a little more specific info for those not ready to do the whole rejetting procedure yet!

The tools I used:

I found the drill bit mounted on the rotary tool to be the quickest at putting a hole through the two left-sided caps, and the outside right-sided cap, but it barely reached the second-from-the-right adjustment cap. For that one I used the angled grinding wheel and attempted to cut through as much of the cap as possible from the side.

The screwdriver/extension setup was used instead of a regular screwdriver only because my screwdriver was not magnetized and the screw kept falling off as I attempted to bring it close to the drilled hole.

The small-sized allen wrench was used at one point to pop the second-from-the-left cap out when the screw decided it did not want to seat itself fully within the drilled out hole. It worked easy enough, though I had to bend it a bit back into shape after applying force to it at an angle.

Additionally, I used needle-nosed pliers to remove the cap with the screw in it, but did not take a picture of such.

With the second-from-the-right cap I ended up grinding as much as I could, and then applying force from the bottom with a small crow bar to force the screw through the thinned out cap. It took a little coaxing, but it finally went! That was definitely the hardest cap to remove!!!
Here are a few pics of what it looked like when I was drilling/grinding out the caps:

Once I had drilled the hole into the cap I was able to use the extension screwdriver setup to place the screw into the hole:

And, viola, out comes the cap! (with the help of the needle-nosed pliers):

I know this is not super-complete, but it should give others more of an idea of how they could proceed with removing the tamper-proof (???) fuel adjustment mixture caps. I am definitely a mechanical novice, but this was fairly easy with a good measure of patience thrown in. My final adjustments are set at 2 1/3 turns out (thirds were easier to measure using a hex-headed screwdriver bit) and they seem to be much better!