Arctic Cat XC 450 2016, Руководство по обслуживанию

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Cleaning/Inspecting Cylinder Head
Cover

NOTE: If the cylinder head cover cannot be trued,
the cylinder head assembly must be replaced.
1. Wash the cylinder head cover in parts-cleaning sol-
vent.
2. Place the cylinder head cover on the Surface Plate
covered with #400 grit wet-or-dry sandpaper. Using
light pressure, move the cylinder head cover in a fig-
ure 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 continuing to move the cylinder
head cover in a figure eight motion until a uniform
bright metallic finish is attained.
CC130D
Removing Valves

NOTE: Keep all valves and valve components as a
set. Note the original location of each valve set for use
during installation. Return each valve set to its origi-
nal location during installation.
1. Using a valve spring compressor, compress the valve
springs and remove the valve keepers. Account for
an upper spring retainer.
CC132D
2. Remove the valve seal and the lower remaining
spring seat. Discard the valve seal.
CC134D
CC136D

NOTE: The valve seals must be replaced.
3. Remove the valve springs; then invert the cylinder
head and remove the valves.
Measuring Valve Guide (Bore)
1. Insert a snap gauge 1/2 way down into each valve
guide bore; then remove the gauge and measure it
with a micrometer.
2. Acceptable inside diameter range must be within
specifications.
3. If a valve guide is out of tolerance, the cylinder head
must be replaced.
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 cylin-
der head cover.
CAUTION
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.