XY Powersports XY500UTV, Service Manual

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7. CARBURETOR
、
FUEL SYSTEM, AIR INTAKE SYSTEM
7-5
● Check the diaphragm ① for tears;
Tears: → Replace
● Check the spring ② ,cover ③ for damage and tears;
Damage or tears: → Replace
● Check the jet needle , mail jet , needle jet , pilot
③
air jet , pilot jet , starter jet and starter plunger
for wear and bends;
Wear or bends: → Replace
● Check above jets for clog. Blow out the jets with
compressed air.
● Insert piston valve into carburetor body and check
the free movement;
● Check free movement of throttle valve. Replace with
a new one if it’s stuck;
3. Measurement and Adjustment
● 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.
Float Height: 10 ± 1mm
Note: The float arm should rest on the needle
valve. Do not compress the needle valve.