Arctic Cat 2013 Prowler XT Service Manual page 94

2. Rotate the camshaft and note runout; maximum tol-
erance must not exceed specifications.
Measuring Camshaft Lobe Height
1. Using a calipers, measure each cam lobe height.
2. The lobe heights must not exceed minimum specifi-
cations.
Inspecting Camshaft Bearing
Journal
1. Inspect the bearing journal for scoring, seizure
marks, or pitting.
2. If excessive scoring, seizure marks, or pitting is
found, the cylinder head assembly must be replaced.
Measuring Camshaft to
Cylinder Head Clearance
1. Remove the adjuster screws and jam nuts.
2. Place a strip of plasti-gauge in each of the camshaft
lands in the cylinder head.
3. Place the valve cover on the cylinder head and secure
with the valve cover cap screws. Tighten securely.
 NOTE: Do not rotate the camshaft when measuring
clearance.
4. Remove the cap screws securing the valve cover to
the cylinder; then remove the valve cover and cam-
shaft.
5. Match the width of the plasti-gauge with the chart
found on the plasti-gauge packaging to determine
CC283D
camshaft to cylinder head and valve cover clearance.
6. If clearance is excessive, measure the journals of the
camshaft.
ATV1013A
 NOTE: If the journals are worn, replace the cam-
shaft; then measure the clearance again. If it is still
out of tolerance, replace the cylinder head.
Inspecting Camshaft Spring/Drive
Pin (Front Camshaft Only)
1. Inspect the spring and drive pin for damage.
CC005D
3
CC145D
CC287D
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