Float Arm Adjustment; Needle And Seat Leak Testing - Polaris 340 LX 2007 Service Manual

Fuel System
7. Remove the pilot and main jets.
8. Thoroughly clean the carburetor body with carburetor
cleaner. Blow dry with compressed air. Verify all air,
fuel, and choke passages are clean.
CAUTION
Always wear eye protection when using compressed air.
9. Assembly is the reverse of disassembly.

Float Arm Adjustment

Proper float arm adjustment in critical to carburetor
performance.
1. Invert carburetor assembly.
2. Carefully bend the float arm tang contacting the inlet
needle so the float arm legs are parallel with the float
bowl mating surface.
4.8

Needle and Seat Leak Testing

A leaking needle and seat can cause hard starting and
poor runability issues.
1. Invert the carburetor assembly. Verify the float arm is
2. Attach a Mity Vac pressure pump to the fuel inlet
3. Apply approximately 5 PSI of pressure and wait for at
9923396 - 2007-2012 EDGE/Widetrak LX Service Manual
©2011 Polaris Sales Inc.
properly adjusted.
fitting.
least one minute. The needle and seat should hold the
pressure indefinitely. If the pressure drops rapidly,
replace the needle and seat assembly.