BERNINA International AG Seestrasse 161 CH-8266 Steckborn Schweiz Seite 113 von 172
DRAFT – VERSION
5.10.2 Time of clutch release
Note: To use the Service Program, the machine must be running (switched on).
Refer to the safety instructions, please.
Standard:
Adjustment:
Check:
• Select basting device.
• Turn cushioner adjusting screw a out by exactly two rotations (counterclockwise), mark before if
required.
• In upward motion, the needle bar must disengage approx. 3mm before reaching the top dead center.
• Turn buffer adjusting screw a back by exactly two rotations (clockwise).
Adjustment:
• Turn adjusting screw a (cylinder head screw M4x8 T20) out of buffer until the needle bar doesn't
engage anymore.
• Untighten screw b (fillister head screw with collar M3x8 T10).
• Move basting solenoid housing up or down as appropriate.
• Retighten screw b.
Set buffer position:
• Start machine and select basting function.
• Run machine at medium speed while turning adjusting screw a (T20) out (counterclockwise) until
needle bar won't engage anymore.
• Switch off basting function.
• Run machine at medium speed while turning adjusting screw a slowly in (clockwise) until needle bar
engages again.
• After the engaging of the needle bar turn adjusting screw a in another quarter rotation in maximum in
order to ensure center positioning of clutch pin in clutch hole.
Functional check:
• Presser foot 1d (with sensor).
• Run machine at highest speed to test basting solenoid in left and right needle positions.
Note: If functional test fails in one, some or all needle positions, recheck the setting of the buffer position
and the needle bar guiding and adjust as required.
To Next Page
