Polaris TX Starfire Owner's Manual page 82

SERVICE INSTRUCTIONS (Con't.)
b) If the inlet valve does not close or function properly
(sticking or not seating well), dismantle by removing the
small screw taking care not to lose the inlet tension spring
when removing the lever.
c) Check if the tip of the valve and the inner surface of the
valve seat are smooth.
d) Replacement of valve and valve seat:
1. Only if the tip of the valve is damaged replace this part
only.
2. If both valve and seat are damaged, replace the old
valve seat using a flat punch.
3. According to the condition of the regulator chamber,
install either a standard or one of the two sizes of oversize
seats available but always use a flat punch so as not to
damage the inside part of the new seat.
e) Check the inlet control lever and pin and replace if
necessary.
3. DIAPHRAGM SPRING:
Check, and replace, if deformed.
4. MIXING BODY
a) Remove both idle and high speed mixture screws.
b) Check the tapered ends of both screws and the orifices
of the body.
c) Replace if the ends of the screws are damaged or the
orifices are deformed.
d) Remove the cover of the idle by-pass port by removing
the two small screws. Then check for blocking of the by-
pass port. Air pressure should be used to blow out any dirt.
Never use a wire or dri II so as not to damage the orifice.
5. RE-ASSEMBLING:
a) Re-assembly while being careful that all the fuel passages
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