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8
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Adjustment Procedures
Results of Improper Adjustment
Adjustment Procedures
Results of Improper Adjustment
①
Remove the sensor cover.
②
Fit the sensor installing base to face A.
Tighten setscrew
1
so that the slit plate passes the center of
the sensor without interfering with each other and put the sensor
cover.
①
Close the air cock of the filter regulator and expel the air.
②
Insert a thickness gauge of 0.5 mm between section C of the
intermediate presser driving arm and section D of machine
arm boss, and make a state that section C of the intermediate
presser driving arm, thickness gauge and section D of the
machine arm boss come close in contact altogether.
③
Turn the intermediate presser cam and stop it at the position
where it has moved nearest to the face plate side.
④
Turn the main shaft so that engraved dot A of the intermediate
presser cam is aligned with engraved dot B of the main shaft
in the direction of rotation. Then tighten two setscrews E.
™
If the position of the intermediate
presser cam in the direction of
rotation is not proper, stitch
skipping, needle breakage, etc.
will occur.
™
I f t h e c l e a r a n c e p r o v i d e d
b e t w e e n t h e i n t e r m e d i a t e
presser driving arm and the
machine arm boss is too small,
they come in contact with each
other during sewing, and noise
may occur.
If the clearance is too large,
pressure of the intermediate
presser is increased. As a result,
maloperation or trouble will be
caused.
™
If the main shaft sensor is not
properly installed, the sensor
may be damaged or error may
ocur.
Summary of Contents for LK-1941
Page 2: ......
