18
4. Adjustment of feed dog height
Requirement:
At the highest working position of the feed dog, the tips of the feed dog teeth must protrude above the
needle plate surface by 0.9 mm (fig. 6).
Check:
z Remove the needle.
z Remove the presser foot.
z Set the maximum stitch length.
z Place bridge gauge (63-112120-08) over the feed dog onto the needle plate.
z Turn the handwheel until the feed dog has reached its highest working position.
z Carry out a visual check.
z The feed dog must not touch the gauge, but must clear it by 0.1 mm.
Adjustment:
z Loosen screw 19 by just 1/8 of a turn (fig 7).
z Turn eccentric stud 20 until the eccentric is facing the rear part of the housing (basic position)
z Turn the eccentric stud to the left until the feed dog height is properly set.
z Tighten screw 19.
Cross-check
z Turn the handwheel and check the feed dog height at its highest working position.
z Make sure that the feed-dog lowering mechanism neither binds nor hits against anything when the
handwheel is turned.
z Lower feed dog and check the function.
