4.2
FUEL SYSTEM
9923983 - 2012-2013 RZR 170 Service Manual
© Copyright 2012 Polaris Sales Inc.
CARBURETION
Special Tools
SPX Corp: 1-800-328-6657 or http://polaris.spx.com/
Carburetor Function
Torque Specifications
PART NUMBER TOOL DESCRIPTION
2870975
Mity Vac
Pressure Test Tool
2872314
Carburetor Float
Adjustment Tool
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.
Carburetor Component Function
System
Main
Components
Main
Function
Main
Effect
Float
System
(Level
Control)
Inlet Pipe,
Needle and
Seat, Float and
Float Pin
Maintains
specified fuel
level in float
chamber
(carburetor float
bowl).
All systems;
all throttle
ranges
Venting
Passages in
carburetor and
vent lines.
Supplies
atmospheric
pressure to float
chamber.
All systems;
all throttle
ranges.
Starter
(Choke
Plate)
Choke Lever,
Cable, and
Choke Butterfly
Supplies
additional fuel
air mixture
necessary for
cold starting.
All throttle
ranges.
Greatest
effect at low
throttle
settings and
idle.
Pilot
(Idle
System)
Pilot Jet /
Passage-ways,
Pilot Outlet and
Throttle Valve.
Primarily
supplies fuel at
idle and low
throttle
positions.
Mainly idle
to
1/4 throttle.
Minimal
effect after
1/2 throttle.
Pilot Air
Screw
Air Screw
Meters the
amount of air
introduced into
the pilot and
main fuel
circuits.
All ranges.
Main
System
Main Jet, Main
Air Passage,
Needle Jet, Jet
Needle, Throttle
Valve.
Supplies fuel at
mid–range and
high throttle
settings.
1/4 to full
throttle.
DESCRIPTION
TORQUE
Ft. Lbs. (Nm)
Intake Manifold Nuts 7-8 (9-11 Nm)
Fuel Pump
Mount Bolt
7-8 (9-11 Nm)
Fuel Tank Strap Bolts 17 (23 Nm)
Crankcase Vent System Mount Bolts 7-8 (9-11 Nm)
Secondary Air System Mount Bolts 7-8 (9-11 Nm)
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