−
61
−
Adjustment Procedures
Results of Improper Adjustment
1) Remove cloth base side cover
2
and top feed cover
1
.
2) Bring the needle bar to the lowest point of its stroke and keep
top feed dog
7
at the height of 9
±
0.5 mm (MO-6900J : 10.5
±
0.5 mm) from the top surface of the throat plate.
(Insert the spacer between the throat plate and top feed dog
7
.)
3) Loosen clamping screw
4
of lifter A
3
.
4) Press presser lifting lever
5
until it will go no further and turn
it. In this state, turn lifter A
3
and strike the pin section to the
eaves section of top feed square block
6
. Then tighten
clamping screw
4
of lifter A
3
.
(Caution) In the state that presser lifting lever
5
is returned,
check that there is a clearance between the pin of lifter A
3
and the eaves section of top feed square block
6
.
5) Return top feed cover
1
and cloth base side cover
2
to their
home positions.
™
When the lifting amount of top
feed dog
7
is excessively high,
contact of top feed square block
6
with the pin section of liter A
3
o c c u r s a t t h e t i m e o f
operation and something is
wrong with the machine.
™
When the lifting amount of top
feed dog
7
is excessively low,
cloth or the presser becomes
hard to be removed at the thick
section such as overlapped
section or the like.
Summary of Contents for MO-6000S series
Page 78: ......
