Evinrude 4906B 4HP 1969, Owner'S Manual

Page: 122 / 422

A worn needle valve unfit for further service.
CLEANING AND INSPECTING
NEVER dip rubber parts, plastic parts,
diaphragms, or pump plungers in carburetor
cleaner. These parts should be cleaned
ONLY in solvent, and then blown dry with
compressed air.
Place all metal parts in a screen-type
tray and dip them in carburetor cleaner
until they appear completely dean, then
blow them dry with compressed air.
Blowout all passages in the castings
with compressed air. Check all of the parts
TYPE II CARBURETOR 4-31
GOOD
Compare this new needle valve with the worn needle
to
the left.
and passages to be sure they are not dogged
or contain any deposits. NEVER use a piece
of wire or any type of pointed instrument to
dean drilled passages or calibrated holes in
a carburetor.
fviove
the throttle shaft back-and-forth
to check for wear. If the shaft appears to
be too loose, replace the complete throttle
body because individual replacement parts
are NOT available.
Inspect the main body, airhor n, and ven-
turi duster gasket surfaces for cracks and