4. FUEL SYSTEM
4-7
VENOX250/250i
Remove the main jet, needle jet holder,
needle jet, slow jet and pilot screw.
Clean the removed fuel jets with detergent
oil and blow them open with compressed air.
Blow compressed air through all passages of
the carburetor body.
INSPECTION
Inspect the float valve and valve seat for
damage or clogging.
Inspect the float valve and valve seat contact
area for stepped wear or contamination.
ASSEMBLY
Install the slow jet, needle jet, needle jet
holder, main jet and pilot screw.
Standard Opening: 2r½ turns
xBe careful not to damage the fuel jets
and pilot screw.
xBefore removing, turn the pilot screw
in and carefully count the number of
turns until it seats lightly and then
make a note of this.
xDo not force the pilot screw against its
seat to avoid seat damage.
＊
Worn or contaminated float valve an
valve seat must be replaced because it
will result in float level too high due to
incomplete airtightness.
＊
Return the pilot screw to the original
position as noted during removal.
＊
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