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Mercury 305 CID - Reassembly

Mercury 305 CID
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90-823225--1 1096 WEBER 4 BARREL CARBURETOR - 5D-29
Reassembly
1. Install mixture screws (needles) with springs in
place. Turn idle mixture screws in (clockwise) un-
til LIGHTLY seated, then back out one and quar-
ter (1-1/4) turns if previous settings were not
noted on disassembly.
IMPORTANT: Do not turn idle mixture screws
tightly against seat, as damage to seat and/or
needle may result.
70467
b
a
a - Idle Mixture Screw
b - Spring, Idle Mixture Screw
2. Install the primary and secondary jets. Tighten
only till snug.
IMPORTANT: Be sure that primary and secondary
jets are installed in the appropriate location. Be
sure that the size matches the same size re-
corded during disassembly.
70466
b
a
a - Primary Fuel Jet
b - Secondary Fuel Jet
3. Install the float bowl baffle plates, if previously
removed.
70465
a
c - Baffle Plate
4. Into bore beneath pump jet housing location, in-
stall check-ball and then check-weight or, if so
equipped, check-ball and check-spring.
IMPORTANT: If your carburetor had a ball and
weight combination, replace with ball and
weight. If your carburetor used a ball and spring
combination, replace with ball and spring.
70463
a
70464
b
a
b
d
c
a - Bore
b - Check Ball
c - Check Weight
d - Check Spring

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