Van's Aircraft RV-12, Maintenance Manual

Page: 140 / 217

Rev.5
12-8
Figure 27: Carburetor Overview (Right Carburetor Shown)
● NOTE: F
OR
S
TEP
1
THROUGH
S
TEP
8
REFER TO
F
IGURES
27
AND
28.
1. Remove the throttle cable locking hardware from the throttle arm.
2. Release the full throttle return spring from its attachment on the throttle arm.
3. Return the throttle arm to its idle position limit of travel by hand, there should be
no resistance during this procedure.
4. Turn the idle speed adjustment screw counterclockwise until it is no longer
contacting the idle stop.
5. Hold the throttle arm lightly against its idle position limit of travel. Insert a .1mm
(.004in) feeler gauge between the idle speed adjustment screw and the idle stop.
Gently turn the idle speed adjustment screw clockwise until contact is made with
the .1mm feeler gauge.
6. From this point turn the idle speed adjustment screw clockwise 1.5 turns.
7. Gently turn the mixture screw completely closed (clockwise) and then reopen by