Arctic Cat Sno Pro 120 2011, Service Manual

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CM145D

NOTE: For assembling purposes, note the indenta-
tion (A) of the stator plate is aligned with the harness
opening (B) in the crankcase.
CM145C

NOTE: The stator plate screws had Loctite applied
to the threads during assembly. Using an impact
driver, apply a sharp blow to the head of each screw
to break the Loctite loose before removal.
8. Remove the cap screws securing the APV assemblies
to the cylinders; then remove the APV assemblies
and set them aside.

NOTE: For assembling purposes, note that the APV
exhaust valves and gaskets are directional.
CM146A
CM147
9. Remove the spark plugs.

NOTE: On the 800 cc at this point, remove the knock
sensor and lock plate from the cylinder head by bend-
ing the lock plate tabs down and unthreading the sen-
sor.
10. Remove the cap screws with O-rings securing the
cylinder head; then separate from the cylinders.
Account for the O-rings.

NOTE: When removing the cylinders, place the
engine on its intake flanges on a drain tray to allow
residual coolant to drain from the cylinder/crankcase
water jacket.
11. Remove the four nuts and four cap screws securing
the cylinders to the crankcase; then using a soft ham-
mer, gently tap the cylinders and remove from the
crankcase by lifting them straight up off their studs.
Account for gasket(s) and alignment pins.
CM148
12. Remove the PTO-side piston-pin circlip from the
PTO-side piston; then remove the MAG-side piston-
pin circlip from the MAG-side piston.
CAUTION
When removing a cylinder, be sure to support the piston
to prevent damage to the crankcase and piston.
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