Bernina B 570 - Hook, needle drive and feed-dog movement timing

BERNINA International AG Seestrasse 161 CH-8266 Steckborn Schweiz Seite 94 von 172
DRAFT – VERSION
e
a
734571.70.01
007937.50.00
A
B
C
D
d
1
d
2
5.4.3 Zigzag stitch width limiter
Note:
To use the Service Program, the machine must be running (switched on). Refer to the safety instructions,
please.
Check:
• Start machine in Service Program.
• Select test 5a Stitch Width Stepping Motor.
• Needle bar support mustn't touch the zigzag
stitch width limiter a.
Adjustment:
• Untighten screw e (T10).
• Position limiter a.
• Retighten screw e.
5.5 Hook, needle drive and feed-dog movement timing
5.5.1 Feed-dog lift movement (base shaft and main shaft timing)
Check:
• Set needle bar position as follows (loop lift):
o Set needle bar to BDC.
o Use loop-lift gauge 734571.70.01 to attach clamp from right in such way
that the machine is locked in BDC position
(pict A).
o Move base body of gauge to right until needle bar
is risen by
2.618mm (pict. B).
• Front view - Base shaft should be pinnable using pinning
tool 0079937.50.00 (pict. C).