Instructions / Assembly

3)Notice

①Clean the CARBURETOR using clean gasoline before disassembly.

②Disassemble or reassemble referring to the deal drawing.

③Do not disassemble the THROTTLE VALVE ASSY and PUMP BODY ASSY.

4)Disassembly and reassemly procedure

①Remove the screw (PUMP COVER) and then the PRIMER PUMP COVER. Remove dust clearly from

the PRIMER PUMP if any.

②Remove the PUMP BODY ASSY from the body (do not let the SPRING missing).

Remove dust clearly from the INLET SCREEN if any.

③Remove the JET from the body.

④Remove the SCREW (THROTTLE COLLAR) and then THROTTLE VALVE ASSY from the body.

⑤Reassemble the JET and SPRING firmly when reassembling the CARBURETOR.

5)Checking procedure

①Clean the body using gasoline and blow it clearly with compressed air.

②Test the JET for dust and corrosion. The dust needs cleaning and blowing with compressed air

and corrosion replacing with new one. (Note:The new JET should have the same number with that

of the old one.)

③Test the GASKETS for deformation and breakage. Replace bad gaskets with new ones if any.

④The PUMP(DIAPHRAGM) should not be hardened or damaged.

⑤The INLET VALVE and the OUTLET VALVE should be flat and not bent.

⑥The DIAPHRAGM ASSY should be free of any hardening, damage or bend.

⑦After cleaning the PUMP BODY ASSY, test it for deformation of the METERING LEVER and METERING

LEVER SPRING, height of the METERING LEVER, dust stuck to the INLET SCREEN, and VALVE leakage,

etc. To check the MAIN CHECK VALVE for its correct operation, place a vinyl or rubber hose at

its end on the CHECK VALVE portion from the JET side and breath it at the other end.

If you cannot breath it and valve closes when you breath it in, it works correctly. If not,

immerse it in gasoline for about 10 minutes and then repeat the procedure described above.

If the VALVE cannot be fixed even by doing this, replace it with a new PUMP BODY ASSY.

(Note: Do not blow the MAIN CHECK VALVE with compressed air. If you use an air gun, keep it

about 30cm away from the valve when the compressed air has a pressure of 6kg/cm2).

⑧Test the PRIMER PUMP for any hole, breakage and abnormal hardening. Make sure that the

COMBINATION VALVE works correctly.

6)Marks on CARBURETOR

Marks are stamped on the CARBURETOR as shown in the right figure:

①Model No.

②Date of manufacture

Example)①：116⇒WYL116

②：914 (March 29 to April 2,1999)

Week 14（what week number in the year）

last digit of the year

①

②