Carburetion; Special Tools; Carburetor Function; Torque Specifications - Polaris RANGER RZR 170 Service Manual

FUEL SYSTEM

CARBURETION

Special Tools

PART NUMBER
2870975
2872314
SPX Corp: 1-800-328-6657 or http://polaris.spx.com/
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.
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
4.2
TOOL DESCRIPTION

Mity Vac
Pressure Test Tool
Carburetor Float
Adjustment Tool
clothing.
9923983 - 2012-2013 RZR 170 Service Manual
© Copyright 2012 Polaris Sales Inc.

Carburetor Function

Carburetor Component Function
Main
System
Components
Float Inlet Pipe,
System Needle and
(Level Seat, Float and
Control) Float Pin
Passages in
Venting carburetor and
vent lines.
Starter Choke Lever,
(Choke Cable, and
Plate) Choke Butterfly
Pilot Jet /
Pilot
Passage-ways,
(Idle
Pilot Outlet and
System)
Throttle Valve.
Pilot Air
Air Screw
Screw
Main Jet, Main
Air Passage,
Main
Needle Jet, Jet
System
Needle, Throttle
Valve.

Torque Specifications

DESCRIPTION
Intake Manifold Nuts
Fuel Pump
Mount Bolt
Fuel Tank Strap Bolts
Crankcase Vent System Mount Bolts
Secondary Air System Mount Bolts
Main Main
Function Effect
Maintains
specified fuel
All systems;
level in float
all throttle
chamber
ranges
(carburetor float
bowl).
Supplies
All systems;
atmospheric
all throttle
pressure to float
ranges.
chamber.
All throttle
Supplies ranges.
additional fuel Greatest
air mixture effect at low
necessary for throttle
cold starting. settings and
idle.
Mainly idle
Primarily
to
supplies fuel at
1/4 throttle.
idle and low
Minimal
throttle
effect after
positions.
1/2 throttle.
Meters the
amount of air
introduced into
All ranges.
the pilot and
main fuel
circuits.
Supplies fuel at
mid–range and 1/4 to full
high throttle throttle.
settings.
TORQUE
Ft. Lbs. (Nm)
7-8 (9-11 Nm)
7-8 (9-11 Nm)
17 (23 Nm)
7-8 (9-11 Nm)
7-8 (9-11 Nm)