Fuel Level; Carburetor Assembly - Polaris Ranger 500 2x4 2007 Service Manual

Fuel Level

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.

Carburetor Assembly

NOTE: Refer to the exploded view of the BST 34
carburetor at the beginning of this chapter for
reference.
1.
Bowl Mating
Surface
NOTE: The final pilot (idle) mixture must be adjusted
with the engine running.
CARBURETION SYSTEM
Install the pilot mixture screw, spring, washer, and O-ring
as an assembly. Lubricate the O-Ring with oil or light
grease before installation. CAUTION: Do not damage the
O-ring during installation. Turn the screw in until it lightly
contacts the seat. Back out the specified number of turns.
Pilot Screw
Pilot Mixture Screw Base Setting
(Set at Factory)
2.5 Turns Out (Initial Setting)
4
4.13