Needle Valve Inspection; Float Height Adjustment; Reassembly And Remounting - Suzuki UY125 Service Manual

NEEDLE VALVE INSPECTION

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

FLOAT HEIGHT ADJUSTMENT

To check the float height, invert the carburetor body, with the
float arm kept free, measure the height A while the float arm is
just in contact with needle valve by using venier calipers. Bend
the tongue 1 as necessary to bring the height A to this value.
# Float height A: XX.X ± X.X mm
$ 09900-20102: Vernier calipers

REASSEMBLY AND REMOUNTING

Reassemble and remount the carburetor in the reverse order of
disassembly and removal. Pay attention to the following points:
• Apply SUZUKI SUPER GREASE "A" to thread part of the
throttle stop screw, then install the throttle stop screw to the
carburetor.
' 99000-25010: SUZUKI SUPER GREASE "A"
http://mototh.com
FUEL AND LUBRICATION SYSTEM 4-13