Panasonic SA-AK640E Service Manual page 243

Step 20: Install the pulley gear followed by the belt.
Note: Do not apply the grease to the belt.
· Assembly of change spring
Step 21: Install the change spring.
Caution: Handle the change spring carefully, do not
lose it. Ensure the change spring seats properly on
the groove of long gear.
· Assembly of pitch plate
Step 22: Install the lock lever 2 as arrows whown in
sequence.
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