Arctic Cat WILDCAT/X Service Manual page 52

CAUTION
Do not allow the connecting rod to go down inside the
crankcase. If the rod is down inside the crankcase and
the crankshaft is rotated, severe damage will result.
AT THIS POINT

To service piston, see Servicing Top-Side Components
sub-section.
AT THIS POINT

To service center crankcase components only, proceed
to Removing Left-Side Components.
Servicing Top-Side
Components
VALVE ASSEMBLY
When servicing valve assembly, inspect valve seats, valve
stems, valve faces, and valve stem ends for pits, burn
marks, or other signs of abnormal wear.
 NOTE: Whenever a valve is out of tolerance, it must
be replaced.
Cleaning/Inspecting Valve Cover
 NOTE: If the valve cover cannot be trued, the cylin-
der head assembly must be replaced.
1. Wash the valve cover in parts-cleaning solvent.
2. Place the valve cover on the Surface Plate covered
with #400 grit wet-or-dry sandpaper. Using light pres-
sure, move the valve cover in a figure eight motion.
Inspect the sealing surface for any indication of high
spots. A high spot can be noted by a bright metallic
finish. Correct any high spots before assembly by con-
tinuing to move the valve cover in a figure eight
motion until a uniform bright metallic finish is
attained.
CAUTION
Do not remove an excessive amount of the sealing sur-
face or damage to the camshaft will result. Always check
camshaft clearance when resurfacing the valve cover.
50
Water or parts-cleaning solvent must be used in con-
junction with the wet-or-dry sandpaper or damage to
the sealing surface may result.
Removing Valves
 NOTE: Index all valves, springs, and cotters to their
original position when removing. When installing, all
valve components should be installed in their origi-
nal position.
1. Using a valve spring compressor, compress the valve
springs and remove the valve cotters. Account for an
upper spring retainer.
2. Remove the valve seal and the lower remaining
spring seat. Discard the valve seal.
 NOTE: The valve seals must be replaced.
3. Remove the valve springs; then invert the cylinder
head and remove the valves.
Measuring Valve Stem Runout
1. Support each valve stem end with the V Blocks; then
check the valve stem runout using a dial indicator.
CC130D
CAUTION
CC132D
CC136D