3-2
Engine/Transmission
This section has been organized into sub-sections
which show a progression for the complete servicing
of the Arctic Cat Y-12+ engine/transmission.
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.
Specifications*
*Specifications subject to change without notice.
Piston Ring End Gap (Installed)
(top)
(2nd)
(oil)
0.15-0.30 mm
0.30-0.45 mm
0.20-0.70 mm
Piston Pin Outside Diameter (Min)
12.96 mm
Piston Pin Bore (Max)
13.03 mm
Piston Skirt/Cylinder Clearance (Max)
0.10 mm
Cylinder Head Distortion (Max)
0.05 mm
Cylinder Bore Trueness
50.00-50.05 mm
Connecting Rod (Small End Inside Diameter) (Max) 13.06 mm
Connecting Rod (Small End Deflection) (Max)
0.40 mm
Connecting Rod/Crankshaft Clearance
(Side to Side) (Max)
0.05 mm
Crankshaft (Runout) (Max)
0.10 mm
Camshaft Lobe Height (Intake) (Min)
26.33 mm
Camshaft Lobe Height (Exhaust) (Min)
25.65 mm
Rocker Arm to Shaft Clearance (Max)
0.10 mm
Intake Valve Stem to Guide Clearance (Max)
0.06 mm
Exhaust Valve Stem to Guide Clearance (Max)
0.08 mm
Valve Stem Runout
0.02 mm
Valve Face/Seat Width
0.63 mm
Valve Face Radial Runout
0.025 mm
Crankshaft Web-to-Web Distance
45.15-45.20 mm
Oil Pump Outer Rotor to Body Clearance (Max)
0.25 mm
Oil Pump Outer to Inner Rotor Clearance (Max)
0.20 mm
Oil Pump Rotor End Clearance (Max)
0.12 mm
V-Belt Width (Min)
16.5 mm
Centrifugal Clutch Housing (Max)
107.5 mm
Centrifugal Clutch Lining Thickness (Min)
1.0 mm
Driven Pulley Spring Free Length (Min)
154.6 mm
Roller Guide Diameter (Min)
15.4 mm
Movable Drive Face Collar (Max)
24.06 mm
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FOR ARCTIC CAT ATV DISCOUNT PARTS CALL 606-678-9623 OR 606-561-4983
www.mymowerparts.com
