16. Carburetor
z Check the diaphragm for tears① ;
Tears: → Replace
z Check the spring ②,cover for damage and tears③ ;
Damage or tears: → Replace
z Check the jet needle , mail jet , needle jet , pilot ①② ③
air jet , pilot jet , starter jet and starter ④⑤ ⑥ plunger ⑦
for wear and bends;
Wear or bends: → Replace
z Check above jets for clog. Blow out the jets with
compressed air.
z Insert piston valve into carburetor body and check
the free movement;
z Check free movement of throttle valve. Replace with
a new one if it’s stuck;
3. Measurement and Adjustment
z Keep the carburetor in a upside down position.
Measure distance “a” from the mating surface of
float chamber (without gasket) to the top of float.
Note: The float arm should rest on the needle valve. Do
not compress the needle valve.
Float Height: 10±1mm
16-4
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