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2-14 FUEL SYSTEM
Carburetor
•
Check the tapered portion [A] of the pilot screw [B] for
wear or damage.
If the pilot screw is worn or damaged on the tapered por-
tion , it will prevent the engine from idling smoothly. Re-
place it.
•
Remove the float valve needle [B].
•
Check the plastic tip [A] for wear.
If the needle is worn as shown [C], replace the valve nee-
dle.
•
Push the rod [D] in the valve needle, then push and re-
lease [E] it.
If the rod does not come out fully by spring tension, re-
place the valve needle.
•
Remove the slow jet.
•
Check the slow jet for any damage.
If the slow jet is damaged, replace it with a new one.
•
Remove the throttle valve and jet needle.
•
Inspect the outside of the throttle valve for scratches and
abnormal wear.
If it is badly scratched or worn, replace the throttle valve.
•
Inspect the inside of the carburetor body for these same
faults.
If it is badly scratched or worn, replace the entire c arbu-
retor.
•
Check the jet needle for wear.
A worn jet needle should be replaced.
•
Clean the fuel and air passages with a high flash-point
solvent and compressed air.