Adjusting Height Of Peed Dog - ELNA Supermatic Service Manual

11. Adjusting Height of Feed Dog
The height of the feed dog is correctly adjusted when the tips of the teeth, at the highest position of the feed
dog, are about 0.8 mm above the needle plate. If this is not the case, adjust as follows:
Remove needle, presser foot, needle plate and free arm cover.
Replace needle plate.
Loosen hex nut on lifter skid screw by using a wrench (7 mm).
Turn flywheel towards you until feed dog reaches its highest position. Next, turn the eccentric lifter skid screw
with wrench until tips of feed dog teeth are about 0.8 mm above needle plate.
If feed dog height gauge No. 607829 is available, place this gauge on needle plate, then turn flywheel slowly
towards you until feed dog is in its highest position and check the height of the feed dog teeth in relation to the
recessed portions on both sides of the gauge.
If adjusted correctly, the tips of the feed dog teeth must either touch or interfere with the recess at 0.8 mm and
must not touch or interfere with recess at 1.0 mm.
If above requirement is not met, adjust feed dog with lifter skid screw.
Tighten hex nut by using two wrenches simultaneously on hex nut and lifter skid screw.
Remove needle plate and replace free arm cover. Replace needle plate, presser foot and needle.
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