Polaris Outlaw 500, Service Manual

Page: 107 / 202

4.12
FUEL SYSTEM / CARBURETION
3. If the float is past parallel with the mating surface, the
carburetor has been tilted back too far and the float tongue
is likely compressing the needle valve pin.
4. Measure the height from the float bowl mating surface to
the top of step of the float as shown in Illustration 2. Both
sides of float should be parallel to each other. The
measurement should be made at the mid–point on top of the
float using Float Adjustment Tool (
PN 2872314 ) or a
vernier caliper. When measuring the height, be sure the
inlet needle valve spring is not compressed.
5. If adjustment is necessary, bend the tongue slightly. Be sure
float measurement is even on left and right side.
FUEL DELIVERY
Needle and Seat Leak Test
1. Install the float bowl. Invert the carburetor and install a
Mity–Vac™ (PN 2870975) to the fuel inlet fitting. Apply
5 PSI pressure to inlet fitting. The needle and seat should
hold pressure indefinitely. If not, inspect needle and seat
and seat O–ring.
Fuel Level test
A fuel level test can be performed on some models if the drain
hose fitting is accessible. Be sure to re–attach the bowl drain
hose after performing the test. A fuel level test allows you to
observe the height of the fuel in the float bowl without removing
the carburetor. The fuel level can be observed with the engine
either running or shut off, however, engine must run briefly to
allow fuel level to stabilize.
1. Attach a clear line to drain fitting. Be sure line fits tightly
on fitting. Position hose along side of carburetor as shown.
Float Bowl Height: 13-14 mm
Float too far inward
Bend to adjust
Float arms even
Mity Vac
TM
(PN 2870975)
Bowl Mating
Surface
1.5 mm
.060 in.
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