Carburetor - Sportsman 450; General Information And Specifications; Special Tools; Carburetor Jetting - Polaris 2007 Sportsman 500 EF Service Manual

Atv polaris 2007 sportsman 450 / 500 efi / 500 x2 efi
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CARBURETOR - SPORTSMAN 450

GENERAL INFORMATION AND
SPECIFICATIONS

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.
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.
NOTE: It is strongly recommended that Polaris Carbon
Clean be added regularly as directed to the fuel systems
of all Polaris ATVs. Carbon Clean stabilizes the fuel,
preventing clogging of the small passages and orifices
common to ATV carburetors, and ensures constant
performance, reliability and easier starting.
4.32
TOOL
DESCRIPTION
Mity Vac
Pressure Test
TM
Tool
Carburetor Float
Adjustment Tool

Carburetor Jetting

IMPORTANT: The following guidelines must be followed
when establishing a main jet setting:
1.
Select the lowest anticipated temperature and altitude at
which the machine will be operated.
2.
Select the correct main jet according to the engines fuel/
performance requirements.
CAUTION
A main jet that is too small will cause a lean
operating condition resulting in serious engine
damage. Select the correct main jet carefully for
elevation and temperature according to the charts in
the Specifications section or in the Owner's Safety
and Maintenance Manual for each particular model.

Mikuni Jet Part Numbers

Main Jets
Jet Number Part Number
130
3131537
132.5
3131536
135
3131535
137.5
3131534
140
3131522
142.5
3131523
145
3131524
147.5
3131525
152.5
3131526
155
3131527
157.5
3131528
160
3131529
162.5
3131530
165
3131531
167.5
3131532
170
3131533

Carburetor Specifications

Fuel System
Carburetor
Main Jet
Pilot Jet
Jet Needle / Clip Position
Needle Jet
Pilot Screw
Pilot Air Jet
Float Height
Fuel Delivery
Fuel Capacity / Requirement
Pilot Jets
Jet Number Part Number
25
3131538
27.5
3131539
30
3131540
32.5
3131541
35
3131542
37.5
3131543
40
3131544
42.5
3131545
47.5
3131546
50
3131547
52.5
3131548
55
3131549
57.5
3131550
60
3131551
65
3131552
70
3131553
Mikuni BST 34mm
167.5
42.5
4IB33 - 3
P-6M (829)
2 3/4 Turns Out (initial)
1.3
13mm ±
±
"
1 (.51
0.40
)
Fuel Pump
4.25 gal US / 19.9 liters
87 Octane (minimum)
or 89 Oxygenated

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