Suzuki GZ250 Service Manual page 109

4-7 FUEL AND LUBRICATION SYSTEM
• Remove the pilot air jet No.1
• Remove the needle jet
PILOT SCREW REMOVAL (For E-03, -28, -33)
Because harsh cleaning solvents can damage the O-rlng
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.
Carefully clean any metal shavings from the area.
• Slowly turn the pilot screw clockwise and count the num-
ber 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 along 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 a new plug by tapping it into place with a punch.
Drill-stop
Plug
Pilot screw
Carburetor body
and No.2