Arctic Cat Cougar Service Manual page 191

ENGINE
RemovaJ/Installation
1.
Remove the cylinder as described in this
chapter.
2. Tum the cylinder over so the reed valve faces
up (Figure 74).
3. Remove the two Phillips screws. Screw
threads may be coated with Loctite and it may
be necessary to apply heat before the screws can
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be loosened. Lift the reed valve assembly from
the cylinder.
4. Remove and discard the gasket and clean any
residue from the valve housing and the cylinder.
5. Check the threaded holes in the cylinder for
damage and repair as necessary.
6. Inspect the reed valve assembly as described
in this chapter.
7. Install a new gasket on the cylinder block and
position the reed assembly onto the cylinder
block.
8. Coat threads of the retaining screws with
Loctite 242 (blue), then tighten the screws se-
curely.
9. Install the cylinder as described in this chap-
ter.
Inspection
1. Carefully examine the reed valve assembly
for visible signs of wear, distortion or damage.
2. If any reed petal is chipped or broken, install
new reeds.
3. Check the coating on the reed cage for sepa-
ration or other damage.
CAUTION
Do not attempt to bend the stop plate
while it is mounted on the reed valve
block because the reed block may be
severely damaged. Replace the stop
plate
if
it is severely bent or damaged.
4. Use a scale or vernier caliper, to measure the
height of the reed stop. Measure from the end of
the reed stop to the reed valve seat (Figure
76,
typical). Compare the measured distance with
the specification listed in Table 2.
5. Measure the clearance between the reed valve
to the seat with a feeler gauge (Figure 77, typi-
cal). If the clearance is 0.20 mm (0.008 in.) or
more, the reed petals should be replaced.