Jetting Guidelines - Polaris 2009 Trail Boss 330 Service Manual

FUEL SYSTEM COMPONENT OVERVIEW
Fuel Pump
Impulse Line
SPECIAL TOOLS
PART NUMBER
2870975
2872314
WARNING
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.
Fuel Tank
Tank to Pump Line
Fuel Pump to Carburetor Line
TOOL
DESCRIPTION
Mity Vact
Pressure Test Tool
Carburetor Float
Adjustment Tool
FUEL SYSTEM/CARBURETION
Vent Line
Fuel Filter
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.

JETTING GUIDELINES

Changes in altitude and temperature affect air density,
which is essentially the amount of oxygen available for
combustion. In low elevations and cold temperatures,
the air is more dense and has more oxygen. In higher
elevations and higher temperatures, the air is less
dense with reduced oxygen.
Polaris ATV Carburetors are calibrated for an altitude
of 0-6000 ft. (0-1800 meters) and ambient
temperatures between +40 and +80° F (+5° to +26°
C). Carburetors must be re-calibrated if operated
outside this temperature and/or altitude range. The
jetting installed in production is not intended for all
altitudes and/or temperatures. In addition, air screw
Carburetor
4.5