46383 Suzuki RM1258

11-6 FUEL SYSTEM

11-6 FUEL SYSTEM

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NEEDLE VALVE INSPECTION

If foreign matter is caught between the valve seat and the nee-dle valve, the fuel will continue flowing and overflow. If the valve seat and needle valve are worn beyond the permissible limits, similar trouble will occur. Conversely₇ if the needle valve sticks, the fuel will not flow into the float chamber. Clean the float cham-ber and float parts with gasoline. If the needle valve is worn, as shown in the illustration, replace it along with a new valve seat. Clean the fuel passage of the mixing chamber using com-pressed air.

FLOAT HIGHT ADJUSTMENT

• Measure the float height with the vernier calipers. To measure the float height, tilt the carburetor until the float tip just con-tacts the needle valve.

| Standard float height ®: 8.7 ± 1.0 mm (0.34 ± 0.04 in) ” 09900-20101: Yernier calipers

REASSEMBLY

Reverse the sequence of removal.

NOTĘ:    \XHW>

Fit the projection of throttfe vafve coiiąr in the grodve of cable

hotder.    /

/ /    - V V >

• Fit the projection on the carburetor body to the depression of the intake pipę.