3-2
Engine/Transmission
This section has been organized into sub-sections
which show a progression for the complete servicing
of the Arctic Cat ATV engine/transmission.
To service the crankcase, the engine must be removed
from the frame.
To service top-side, left-side, and right-side compo-
nents (except cylinder head), the engine does not have
to be removed from the frame.
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 servicing the engine/transmission.
NOTE: Special tools are available from the Arctic
Cat Service Parts Department.
Specifications*
* Specifications subject to change without notice.
Description
p/n
Torx-Head Screwdriver - #30
0644-344
Drive Clutch Removal Tool
0444-226
Fuel Injector Timing Tool
0444-234
Timing Belt Tensioning Tool
0444-231
Main Bearing Seal Installation Tool
0444-233
Unit Injector Retainer Nut Tool
0444-227
Pre-Combustion Chamber Ring Nut Tool
0444-235
Pre-Combustion Chamber Removal Tool
0444-228
Pre-Combustion Chamber Index Tool
0444-229
Valve Seal Installation Tool
0444-230
VALVES AND GUIDES
Valve Face Diameter
(intake)
(exhaust)
34.4 mm (1.35 in.)
30.2 mm (1.19 in.)
Valve Clearance
(intake/exhaust)
(cold engine)
0.20 mm (0.008 in.)
Valve Guide/Stem Clearance
0.015-0.060 mm
(0.0006-0.0024 in.)
Valve Guide Inside Diameter
7.005-7.020 mm
(0.2758-0.2764 in.)
Valve Stem Diameter
6.960-6.990 mm
(0.2740-0.2752 in.)
Valve Face/Seat Width (intake/exhaust)
1.6-2.0 mm
(0.063-0.079 in.)
Valve Spring Free Length
(min)
43.0 mm (1.69 in.)
CAMSHAFT AND CYLINDER HEAD
Camshaft Lobe Height
(min)
(intake/exhaust)
29.498 mm (1.161 in.)
Camshaft Injection Lobe
(min)
28.848 mm (1.136 in.)
Camshaft Journal Holder
(max)
Inside Diameter
37.060 mm (1.459 in.)
Camshaft Journal Diameter
(min)
36.975 mm (1.456 in.)
Cylinder Head Distortion
(max)
0.10 mm (0.004 in.)
Rocker Arm Bore
18.015-18.030 mm
(0.7092-0.7098 in.)
Rocker Arm Shaft
17.989-18.000 mm
(0.7082-0.7087 in.)
CYLINDER, PISTON, AND RINGS
Bore x Stroke
75 x 77.6 mm
(2.95 x 3.05 in.)
Piston Ring End Gap - Installed
(min)
0.25 mm (0.0098 in.)
Piston Ring Groove Width
(1st)
(2nd)
(3rd)
0.090-0.125 mm
(0.0035-0.0049 in.)
0.050-0.085 mm
(0.0020-0.0033 in.)
0.040-0.075 mm
(0.0016-0.0030 in.)
Piston Pin Bore
(max)
18.025 mm (0.7096 in.)
Piston Pin Outside Diameter
(min)
17.996 mm (0.7085 in.)
CRANKSHAFT
Connecting Rod Piston Pin
(max)
Bushing (inside diameter)
18.025 mm (0.7096 in.)
Crankshaft Main Bearing Journal
51.023-51.059 mm
(2.009-2.010 in.)
Crankshaft Connecting Rod
(min)
Journal
39.9 mm (1.57 in.)
Connecting Rod Clearance
0.021-0.066 mm
(0.0008-0.0026 in.)
Main Bearing Clearance
0.023-0.078 mm
(0.0009-0.0031 in.)
Rod Bearing Diameter
40.021-40.050 mm
(1.5756-1.5767 in.)
Oil Pump Pressure
(min)
at 120° C (248° F)@900 RPM
1.1 kg/cm² (15.6 psi)
Cooling Fan Thermo-Switch
(off
on)
Operating Temperature
(on
off)
93° C (199° F)
87° C (189° F)
Next
Section
Table of Contents
Manual
Table of Contents
FOR ARCTIC CAT ATV DISCOUNT PARTS CALL 606-678-9623 OR 606-561-4983
www.mymowerparts.com