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10
5.6
5.7
5.8
Motor pulley
Position
the motor
pulley so that the clearance
between
the motor and motor pulley is 2 mm, as
shown.
Then, tighten
the screw
securely. Apply
screw lock paint to the screw head after tightening
the screw.
Flywheel thrust
1. Adjust the thrust clearance to 0.1 — 0.3 mm by
turning the thrust adjusting screw.
2. Turn
the screw clockwise
to decrease the al-
lowance, and counterclockwise to increase it.
3. After the adjustment, apply screw lock paint to
the screw head.
Muting switch timing
When
the
play
lever
is slowly
depressed,
the
muting switch should be switched over, just before
or at the same time as the play lever is locked. (Do
not depress the play lever with an excessive force.)
The upper and lower units of the muting switch
should function simultaneously
(although a slight
time lag is permissible). To adjust to the correct
timing, bend the head lever in the direction of the
arrow,
STD-1800
Head lever
Adjust by turning this screw
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