Carburetor Adjustments; Carburetor Synchronization-Static Adjustment - Mercury 40 Service Manual

CARBURETOR

Carburetor Adjustments

Carburetor Synchronization-Static Adjustment

NOTE: This static adjustment is necessary if the throttle stop screws were loosened or tam-
pered with. The initial static setting is preparation for the Carburetor Synchronization-dy-
namic adjustment (Section 2C).
1. Remove the carburetors as a unit.
2. Disconnect throttle link (a) and auto choke "Z" link (b).
3. Adjust the idle rpm screw #4 until the throttle shutter covers half of bypass hole.
4. Install throttle link.
5. Adjust throttle stop screws #1, #2 and #3 until the throttle shutters cover half of bypass
hole.
6. Re-install "Z" link.
7. Re-install the carburetors as a unit.
a -
b -
c -
Page 3B-12
c
1
2
3
4
Throttle Link (Disconnect)
Auto Choke "Z" Link (Disconnect)
Bypass Hole
a
b
90-828631R3 MARCH 1999