Needle And Seat Leakage Test; Fuel Level Test - Polaris Hawkeye Repair Manual

3. 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.
Float Bowl Height: 13-14 mm
4. If adjustment is necessary, bend the tongue slightly.
Be sure float measurement is even on left and right
side.

NEEDLE AND SEAT LEAKAGE 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.
TM
Mity Vac
- www.instant-manuals.com -
(PN 2870975)
FUEL SYSTEM / CARBURETION

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.
1.5 mm
.060 in.
2. Open bowl drain screw by turning counterclockwise
approximately two turns. Start and run engine for 3 to
5 seconds to allow fuel level to stabilize in the line. If
level is out of specification, remove carburetor and
inspect inlet needle and seat, float height, passages,
etc.
NOTE: If a line was removed to perform this procedure, it
must be replaced.
Bowl Mating
Surface
4.15