Specifications

8
HIGH SPEED NOZZLE. The carburetor body contains
a main nozzle emulsion tube pressed into the carburetor
body to a predetermined depth and positioned within
the venturi of the carburetor. Do not attempt to remove
this main nozzle. Repositioning of this nozzle will
seriously affect the metering characteristics of the
carburetor and will require replacement of the entire
carburetor.
FUEL INLET FITTING. If necessary, this fitting can
be removed by pulling and twisting. Be sure to install
the fitting in the same position as the original. When
installing the fitting, insert tip into the carburetor
body, then coat the exposed portion of the shank
with Loctite grade A; then press it in until the shoulder
contacts the carburetor body.
CARBURETOR BODY. When removing the choke
and throttle shafts, check shafts and bearings in
carburetor body for wear. Any looseness in these
areas can cause dirt to enter the engine and cause
premature wear. If dust seals are present, these should
be positioned next to the carburetor body.
To do a proper cleaning job, welch plugs should be
removed to expose drilled passages. To remove the
welch plug, sharpen a small chisel to a sharp wedge
point. Drive the chisel into the welch plug, push down
on chisel and pry plug out of position.
When all accessories and shafts have been removed,
soak the carburetor in carburetor cleaner for a maximum
of 30 minutes. Blow out all passages with compressed
air in the opposite direction of normal fuel flow or
use a soft tag wire. Clean all metallic parts with solvent.
To install a new welch plug after cleaning, place
the welch plug into receptacle with raised portion
up. With a punch equal, or greater than the size of
the plug, merely flatten the plug. Do not dent or drive
the center of the plug below the top surface of the
carburetor.
WELCH PLUG
MAIN NOZZLE
EMULSION TUBE
DO NOT REMOVE
PRESS IN PARTIALLY
THEN APPLY LOCTITE
GRADE A
SOME INLET FITTINGS
UTILIZED A STRAINER
SMALL CHISEL
PRY OUT PLUG
PIERCE PLUG WITH TIP
WELCH PLUG TO BE
REMOVED
DO NOT ALLOW
CHISEL POINT TO
STRIKE CARBURETOR
BODY
ABOUT 1/8” (3.2 MM)
WIDE
SMALL CHISEL
FLAT-END PUNCH
NEW WELCH
PLUG
SAME OR LARGER
DIAMETER OF PLUG