Valve/Tappet Clearance (Feeler Gauge Procedure); Valve/Tappet Clearance (Valve Adjuster Procedure) - Arctic Cat Prowler Service Manual

2. Replace any one-way drain that is cracked or
shows any signs of hardening or deterioration.
! CAUTION
The one-way drain to the left is the clean air section
of the filter housing. Any leak of this one-way drain
will allow dirt into the engine intake causing severe
engine damage.
3. Wipe any accumulation of oil or gas from the filter
housing and one-way drains.
Valve/Tappet
Clearance
(Feeler Gauge Procedure)
To check and adjust valve/tappet clearance, use the
following procedure.
NOTE: The engine must be cold for this proce-
dure.
NOTE: The seats, center console, spark plug,
and air filter housing must be removed for this pro-
cedure.
1. Remove the timing inspection plug; then remove
the tappet covers (for more detailed information,
see Section 3 - Servicing Top-Side Components).
2. Rotate the crankshaft to the TDC position on the
compression stroke.
NOTE: At this point, the rocker arms and adjuster
screws must not have pressure on them.
3. Using a feeler gauge, check each valve/tappet
clearance. If clearance is not within specifications,
loosen the jam nut and rotate the tappet adjuster
screw until the clearance is within specifications.
Tighten each jam nut securely after completing the
adjustment.
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2-6
PR141A
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! CAUTION
The feeler gauge must be positioned at the same
angle as the valve and valve adjuster for an accurate
measurement of clearance. Failure to measure the
valve clearance accurately could cause valve com-
ponent damage.
VALVE/TAPPET CLEARANCE
Intake 0.1016 mm (0.004 in.)
Exhaust 0.1524 mm (0.006 in.)
4. Install the spark plug; then install the timing
inspection plug.
5. Place the two tappet covers with O-rings into posi-
tion. Tighten the cap screws securely.
Valve/Tappet Clearance
(Valve Adjuster Procedure)
To check and adjust valve/tappet clearance, use the
following procedure.
NOTE: The engine must be cold for this proce-
dure.
NOTE: The seats, center console, spark plug,
and air filter housing must be removed for this pro-
cedure.
1. Remove the timing inspection plug; then remove
the tappet covers (for more detailed information,
see Section 3 - Servicing Top-Side Components).
2. Rotate the crankshaft to the TDC position on the
compression stroke.
NOTE: At this point, the rocker arms and adjuster
screws must not have pressure on them.
NOTE: Use Valve Clearance Adjuster for this pro-
cedure.
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CC007D
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