Derek---Can't help you with the drawing that you requested, but these
tools are supposed to be inexpensive. In a pinch you can use ONE of the
following:
A 1/8" "T" handled wrench (SEARS)
A long 1/8" Allen wrench
Braze the tip of a 1/8" Allen wrench to a length of 1/4" bar stock, or
any piece of rod that will give you a tool approx 7" long, so you are
able to reach the bottom of the air piston where the adjustment screw
lives. You can fashion your own 'handle' at the top of this home-made
tool. What will be lacking when you don't use the 'special tool' is the
part that keeps the air piston from turning as you adjust the mixture
adjusting screw. The diaphragm will hold things if you don't have to use
a lot of force to turn the screw.
Dick T.
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