5C-10 - ROCHESTER 4 BARREL CARBURETOR 90-823225--1 1096
!
WARNING
DO NOT leave the helm unattended while per-
forming idle speed and mixture adjustments, fol-
lowing. BE CAREFUL NOT TO ACCIDENTALLY
ACCELERATE ENGINE WHILE PERFORMING
ADJUSTMENTS.
4. With boat in open water, place remote control in
forward gear, idle position.
5. Disconnect throttle cable brass barrel from an-
chor stud. BE SURE NOT TO LOSE SPACER
ON ANCHOR STUD.
6. Adjust idle speed adjustment screw to obtain
specified RPM.
7. With engine running at specified RPM, adjust idle
mixture needles as follows:
a. Turn idle mixture needle in (clockwise) until
the engine speed begins to drop due to lean
mixture.
b. Turn idle mixture screw out (counterclock-
wise) until the speed begins to drop due to a
rich mixture.
c. Turn screw in to a point between these two
extremes to obtain maximum engine smooth-
ness and RPM.
d. Repeat procedure with other needle.
e. Readjust idle speed adjustment screw, if nec-
essary, to obtain specified RPM.
IMPORTANT: Refer to Section 2 for throttle cable
installation and adjustment.
Repair
NOTICE
Refer to “Precautions,” in this section, BEFORE
proceeding.
IMPORTANT: Carburetor malfunctions are, in
many cases, caused by the presence of dirt, wa-
ter or other foreign matter in carburetor. To aid in
diagnosis, carefully remove carburetor from en-
gine without draining fuel from bowl. Contents of
fuel bowl may then be inspected for contamina-
tion as carburetor is disassembled.
Removal
1. Remove flame arrestor.
2. Disconnect choke spring rod.
72099
a - Choke Link
b - Clip
b
a
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