Carburetion System; Special Tools; Carburetor Function - Polaris PREDATOR 50 2009 Manual

FUEL SYSTEM

CARBURETION SYSTEM

Special Tools

PART NUMBER
2870975
2872314
Gasoline is extremely flammable and explosive
under certain conditions.
Always stop the engine and refuel outdoors or in
a well ventilated area.
Do not overfill the tank. The tank is at full
capacity when the fuel reaches the bottom of the
filler neck. Leave room for expansion of fuel.
Never start the engine or let it run in an enclosed
area. Gasoline powered engine exhaust fumes
are poisonous and can cause loss of
consciousness and death in a short time.
Never drain the float bowl when the engine is
hot. Severe burns may result.
Do not smoke or allow open flames or sparks in
or near the area where refueling is performed or
where gasoline is stored.
If you get gasoline in your eyes or if you should
swallow gasoline, seek medical
attention immediately.
If you spill gasoline on your skin or clothing,
immediately wash with soap and water and
change clothing.
4.2
TOOL DESCRIPTION
™
Mity Vac
Pressure Test Tool
Carburetor Float
Adjustment Tool
WARNING

Carburetor Function

Carburetor Component Function
Main
System
Components
Inlet Pipe, Needle
Float System
and Seat, Float and
(Level Control)
Float Pin
Passages in
Venting carburetor and vent
lines.
Starter Choke Lever, Cable,
(Choke Plate) and Choke Butterfly
Pilot Jet / Passage-
ways, Pilot–Mixture
Pilot Screw with Spring
(Idle System) Washer and Sealing
O–Ring, Pilot Outlet
and Throttle Valve.
Main Jet, Main Air
Passage, Needle
Main System
Jet, Jet Needle,
Throttle Valve.
Main Main
Function Affect
Maintains specified
fuel level in float
All systems; all
chamber
throttle ranges
(carburetor float
bowl).
Supplies
atmospheric All systems; all
pressure to float throttle ranges.
chamber.
All throttle
Supplies additional ranges.
fuel air mixture Greatest effect
necessary for cold at low throttle
starting. settings and
idle.
Mainly idle to
Primarily supplies 1/4 throttle.
fuel at idle and low Minimal effect
throttle positions. after 1/2
throttle.
Supplies fuel at
1/4 to full
mid–range and high
throttle.
throttle settings.