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• Clean all jets with a spray-type carburetor cleaner and
blow dry with compressed air.
• Clean all circuits of the carburetor thoroughly - not just
the perceived problem area. Clean the circuits in the car-
buretor body with a spray-type cleaner and allow each
circuit to soak if necessary to loosen dirt and varnish. Blow
the body dry with compressed air.
Iii.
CAUTION
I
Do not use wire to clean jets or passageways. Wire can
damage jets and passageways. If the components can-
not be cleaned with a spray cleaner it may be neces-
sary to use a dip-type cleaning solution and allow them
to soak. Always follow the chemical manufacturer's in-
structions for proper use and cleaning of the carbure-
tor components.
• After cleaning, reassemble the carburetor with new seals
and gaskets. Reinstall the pilot screw to the original fac-
tory setting with a new O-ring seal.
• Install a new cap over the pilot screw opening. (for
E-03, 18,33 models)
PILOT SCREW REMOVAL
(FOR E-03,18 AND 33 MODELS)
Because harsh cleaning solvents can damage the O-ring seals
in the pilot system, the pilot system components should be
removed before cleaning.
• Use a
1/8" size drill bit with a drill-stop to remove the
pilot screw plug. Set the drill-stop 6 mm from the end of
the bit to prevent drilling into the pilot screw. Carefully
drill through the plug.
• Thread a self-tapping sheet metal screw into the plug. Pull
on the screw head with pliers to remove the plug. Care-
fully clean any metal shavings from the area.
• Slowly turn the pilot screw in clockwise and count the
number of turns until the screw is lightly seated. Make
a note of how many turns were made so the screw can
be reset correctly after cleaning.
• Remove the pilot screw with the spring, washer, and
O-ring.
• After cleaning reinstall the pilot screw to the original set-
ting by turning the screw in until it lightly seats, and then
backing it out the same number of turns counted during
disassembly.
• Install new plug by tapping it into place with a punch.
FUEL AND LUBRICATION 4-12
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