4-2
Fuel/Lubrication/
Cooling
NOTE: Arctic Cat recommends the use of new
gaskets, lock nuts, and seals and lubricating all
internal components when servicing the
engine/transmission.
NOTE: Some photographs and illustrations used
in this section are used for clarity purposes only
and are not designed to depict actual conditions.
NOTE: Critical torque specifications are located
in Section 1.
SPECIAL TOOLS
A number of special tools must be available to the
technician when performing service procedures in this
section. Refer to the current Special Tools Catalog for
the appropriate tool description
.
NOTE: Special tools are available from the Arctic
Cat Service Parts Department.
Carburetor
Specifications
(650 cc)
Electric Choke
(650 cc)
REMOVING
1. Disconnect the electric choke connector from the
wiring harness; then remove the screw securing
the choke body to the carburetor.
2. Carefully remove the choke assembly from the
carburetor taking care not to force the plunger
from the carburetor body.
INSPECTING/TESTING
1. Inspect the plunger (A) for scoring or scratches,
the needle (B) for damage to the tip, the spring (C)
for breakage, and the O-ring (D) for breaks.
KC328A
2. With the choke at room temperature (approxi-
mately 70° F), measure plunger extension. Mea-
surement (A) should be 18.6-19.1 mm.
KC328B
3. Connect Electric Choke Test Harness to the choke
connector and a suitable 12 DC volt power supply
for 2-3 minutes. Disconnect the power and mea-
sure plunger extension. Measurement (B) should
be 22.1-23.4 mm.
KC328C
4. If the choke is damaged or the measurements are
not within specifications, the choke must be
replaced.
Description
p/n
Electric Choke Test Harness
0444-247
Oil Pressure Test Kit
0644-495
Tachometer
0644-275
Type
Keihin CVK36
Main Jet
138
Slow Jet
40
Pilot Screw Setting (turns)
2
Needle Jet
6.0/4.0
Jet Needle
Fixed
Idle RPM
1250-1350
Starter Jet
85
Float Arm Height
17 mm
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