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Mercury 305 CID - Page 458

Mercury 305 CID
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MERCARB 2 BARREL CARBURETOR - 5B-1990-823225--1 1096
3. Turn float bowl assembly upside down and place
new throttle body gasket on bowl, making sure
gasket is properly positioned on location dowels.
72295
b
a
b
a - Throttle Body Gasket
b - Locating Dowels
4. Install throttle body assembly on float bowl as-
sembly, making sure that screw holes in gasket
line up with screw holes in throttle body. Tighten
screws evenly and securely.
72294
b
c
d
a
b
a - Screws
b - Lockwashers (Not Shown)
c - Throttle Body Assembly
d - Gasket
FLOAT BOWL ASSEMBLY
IMPORTANT: Place float bowl and throttle assem-
blies in holding fixture to prevent throttle valves
from being damaged.
1. Install check ball, spring, and retainer in passage
as shown. Push retainer firmly into slots.
72408
a
b
c
a - Check Ball
b - Spring
c - Retainer
2. Install new gasket on venturi cluster as shown.
72296
b
a
a - Venturi Cluster (I.D. No. 421)
b - Gasket

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