Needle Valve Inspection; Float Height Adjustment - Suzuki Vinson LT-A500F Service Manual

5-12 FUEL AND LUBRICATION SYSTEM
INSPECTION
Check the following items for any damage or clogging. If any
damages are found, replace the damaged parts with new ones.
* Pilot jet
*Main jet
*Main air jet
* Pilot air jet
* Needle jet air bleeding hole
* Float
* Needle valve
* Jet needle

NEEDLE VALVE INSPECTION

If foreign matter is caught between the valve seat and the needle
valve, the gasoline will continue flowing and overflow. 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 chamber. Clean the float
chamber and float parts with gasoline. If the needle valve is worn
as shown, replace it and the valve seat with and a new one.
Clean the fuel passage of the mixing chamber using compressed
air.

FLOAT HEIGHT ADJUSTMENT

To check the float height, turn the carburetor upside down.
Measure the float height ® while the float arm is just contacting
the needle valve using vernier calipers.
Bend the tongue as necessary to bring the float height ® to the
specified level.
09900-20101: Vernier calipers
RISES Float height ® : 13.0 ± 0.5 mm (0.51 ± 0.02 in)
* Valve seat
* Piston valve
* Starter (enricher) jet
* O-ring
* Throttle valve
* Diaphragm
* Pilot outlet and by-pass ports
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INCORRECT
CORRECT