Mercury 305 CID - Carburetor Metering Rod and Jet Identification

5D-6 - WEBER 4 BARREL CARBURETOR 90-823225--1 1096
Carburetor Metering Rod And Jet
Identification
METERING ASSEMBLY
The metering rod assemblies are different in the fol-
lowing ways:
73729
73732
Two Step
Three Step
a
a
b
b
d
d
e
e
c
c
a - Piston
b - Metering Rod
c - Spring
d - Jet
e - Piston Cover
METERING JETS
The metering jets in this carburetor are taller than the
jets in a standard carburetor.
73728
a
b
Two Step
Three Step
a - Three Step Metering Rod
b - Two Step Metering Rod
METERING ROD HAS “THREE STEPS” -VS-
TWO
73724
73726
Two Step
Three Step
PISTON SHAPE IS DIFFERENT AND HAS
A SECOND SPRING
73727
73730
Two Step
Three Step