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Thanks, Knucklebuck. I already have an extension from the needle valve, but it isn't long enough to reach the hole I drilled into the top of the cowling. Yes could you provide the photos? What I would like to do is make an access panel in the cowl to be able to get to the needle valve as well as the carb and fuel line if I need to cut the fuel flow.
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Simply make a new extension from a piece of linkage wire to reach your screw. Grind a small flat in the end that goes into the screw, and bend an "L" on the outer end.

As for fuel cut-off, never depend on that to kill a gas engine. ALWAYS use an elecrtical kill switch in the ignition circuit. This is required by AMA.


Just reread your post, you don't mention what kind of motor you are using, so the above statement about ignition kill may not apply to you.

If you can figure out how to make an access panel, it would seem the rest would be simple in comparison. Cowl removal for those items, (fuel delivery system/hoses,) would be 100 times simpler, unles the motor you are using is huge. I had the OS 160 Flat Twin on mine, and cowl removel took less than 5 minutes, requireing removal of prop, carb adjustment needle, and nut on fuel filler.