C
32. Periodical cleaning (Fig 40、41、42)
30. Adjusting the lift amount of presser foot together with walking foot (Fig 38)
38
-15-
31. Adjusting the clearance between presser foot and walking foot (Fig 39)
39
A
B
Above
Under
The lift amount of walking presser foot together
with presser foot can also be adjusted slightly. When
adjusting, loosen screw (A) adjust its center distance B
between the screw (A) and the presser foot lift shaft. The
lift amount is increased as to shorten the center distance
B, and the lift amount is decreased as to widen the center
distance B. After adjustment, tighten the nut again. .
In sewing operation, for preventing the walking
foot from striking on presser foot a proper clearance C
of approx. 1.5mm should be maintained between them.
When the clearance is too small or too big, necessary to
adjust, loosen rear crank screw and turn the rock shaft,
then the walking foot moves near the needle bar. When
adjust, be sure to note the fixed number of the clearance
C. .
Clean the feed dog, the rotating hook, the bobbin
case, the oil pump, filter screen and the like perodically
according to customer s usage. .
'
To Next Page
Loading...
