Timing Adjustment Of Main·auxiliary Presser Foot And Needle - SunStar KM-1060BL User Manual

15) Timing adjustment of the main·auxiliary presser foot and needle
A. Adjustment of maximum ascending amount of the
main·auxiliary presser foot
The maximum lifting quantity of the main and auxiliary presser
foot is 7 mm. First, set the upper lid dial at "1"and take out
the upper lid. Move the body① of a climb device towards the
arrow direction until it reaches the stopper plate②. At this
time, set the clearance between the outer round of the pin④
head, which is inserted into crank③ and outer round of the
screw⑤ at 45.5 mm. Tighten the crank clamp screw⑥. After
adjustment, reassemble the upper lid with the dial set at "1" .
B. Adjustment of lifting amount of the main·auxiliary
presser foot
The height of lifting amount of the main·auxiliary presser
foot must be equal. Make the adjustment as indicated below.
a) Set the stitch length at a maximum.
b) Take out the rubber cap from the upper lid.
c) Loosen the clamp screw① and turn the machine until the
needle tip and the upper part of the feed dog come to meet
on the surface of the needle plate.
d) Adjust the crank② to make sure that the main and
auxiliary presser foot touch the needle plate at the same
time and fasten the clamp screw①.
e) After adjustment, place back the rubber cap on the upper lid.
C. Timing adjustment of the main·auxiliary presser foot and needle
As a standard, the needle tip enters the needle hole of the feed dog immediately after the main presser foot① touches the feed dog.
Likewise, the main presser foot① comes apart from the feed dog right after the needle tip comes out of the feed dog. Refer to the
following for adjustments.
a) Disassemble the upper lid with the dial set at "1" .
b) Loosen two fixing screws of vertical movement cam② of the presser foot.
c) After securing the needle bar in the highest position, hold the No.1 screw③ of the cam② so that it faces up perpendicularly.
Afterwards, tighten the cam-fixing screws.
d) Place back the upper lid after adjustment.
①
①
②
⑥
④
⑤
45.5mm
①
②
③
②
③
[ Fig. 48 ]
[ Fig. 49 ]
[ Fig. 50 ]
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