Arctic Cat 2014 SNO PRO 500 Operator's Manual page 42

NOTE: When replacing the inner water pump
seals, use the recommended Water Pump Bearing
and Seal Tool Kit (p/n 0644-557) only.
22. Place the crankcase on the bench with the water
pump side down. Using the long seal driver, drive
the mechanical water pump seal from the crank-
case.
23. Using a pair of snap ring pliers, remove the snap
ring securing the inner seal in the crankcase.
24. Using the hooked end of the tool, pull the inner
seal free of the crankcase.
25. Using the hooked end of the tool, pry the seal ring
from the backside of the water pump impeller.
38
Cleaning and Inspecting Engine
Cylinder Head
1. Using a non-metallic carbon removal tool, remove
any carbon buildup from the combustion chambers
being careful not to nick, scrape, or damage the
combustion chambers or the sealing surfaces.
2. Inspect the spark-plug holes for any damaged
threads.
3. Inspect the cylinder head for flatness using a
straightedge and a feeler gauge. Acceptable warp-
age must not exceed 0.002 in.
CM159A
NOTE: If the warpage exceeds specification,
resurface the cylinder head using procedures
identified in step 4.
4. Place the cylinder heads on a Surface Plate (p/n
0644-016) covered with #400 grit wet-or-dry
sandpaper. Using light pressure, move each cylin-
der head in a figure eight motion. Inspect the seal-
FC036 ing surface for any indication of high spots. A high
spot can be noted by a bright metallic finish. Cor-
rect any high spots before assembly by continuing
to move the cylinder head in a figure eight motion
until a uniform bright metallic finish is attained.
Water or parts-cleaning solvent must be used in con-
AN327D
junction with the wet-or-dry sandpaper or damage to
the sealing surface may result.
CAUTION
FS270
CM018