22
4. Adjustment of feed dog height
Requirement:
In the highest position of the feed dog, the points of its teeth must protrude above the needle plate surface
by 0.85 - 0.9 mm. The tolerance must not remain under or exceed 0.85 to 0.9 mm (fig. 9).
Check:
• Remove the needle.
• Remove the presser foot.
• Switch on the master switch.
• Set stitch pattern „1“ and stitch length „6.0“.
• Place adjustment gauge (63-114 690-23) on the needle plate so that feeler lever 30 rests on the
needle plate to the right of the cutout (fig. 10).
• Turn the hexagon with a 6 mm spanner (wrench) slightly until pointer 31 is exactly at „0“.
• Move the gauge to the left to set feeler lever 30 on the feed dog (fig. 11).
• Turn the handwheel until pointer 31 has moved up to its highest position. The pointer must now point
exactly at mark 0.9.
Adjustment:
• Leave the adjustment gauge on the needle plate.
• Remove baseplate and bobbin thread monitor, but leave all electrical connections in place.
• Turn the handwheel until the feed dog is in its highest working position.
• Loosen screw 32 by just 1/8 of a turn (fig. 12).
• Turn eccentric stud 33 until the eccentric is facing the rear part of the housing (basic position).
• Turn eccentric stud 33 counter-clockwise until pointer 31 is exactly at mark 0.9 (fig. 11).
• Tighten screw 32 (fig. 12).
Cross-check:
• Turn the handwheel until pointer 31 is in its highest position again.
The pointer must now be at mark 0.9. (fig. 11).
• Lower the feed dog and check the function.
To Next Page
Loading...
Need help?
General
