On Carburetor (8), turn adjustment screw (5) fully clockwise
and then quickly back-off 1-1/2 turns.
If RPM indicator wire
vibrates at maximum swing, engine rpm is now between 4200
If not, proceed to step (7).
Loosen screw (6) on adjusting plate (7).
Slowly turn adjusting plate (7) until rpm indicator wire vibrates
at maximum swing.
Turning the adjusting plate clockwise de-
creases engine speed, counterclockwise increases engine speed.
Tighten screw (6).