Janome QMP16SU Manual page 42

If needle distance adjustment is necessary
Tool: 2 mm handle hex wrench
 NOTE: If needle height is not first set roughly
close, it will not be possible to set needle
distance correctly.
1. If the clamp is still in place, remove it now.
2. Rotate the basket down in order to properly set
the needle distance. See To rotate the bobbin-
case basket above.
3. Hold the basket down while turning the hand
wheel to prevent it from turning and colliding
with the needle.
4. Loosen the two screws on the hook base.
 NOTE: Some hooks are tighter than others on
the hook-shaft. You may be tempted to pry
on the hook mechanism. If you pry on the
hook it may become damaged, irreparable
and unusable.
5. Replace the clamp and reset with the 2.2 feeler gauge. See step 4 under the Check for Loop Lift and
Needle Distance, making sure to turn the hand wheel in the direction of motion.
6. Set the hook to the correct positions by sliding
the hook axially (needle distance) on its shaft, as
well as radially (loop lift), setting the hook point
relative to the needle.
7. Adjust the needle distance by sliding the hook
axially toward the needle until the hook barely
touches, or lightly brushes, inside the needle
scarf.
 NOTE: It is better for the needle to barely
touch than be too far away from the hook.
Too much needle distance may cause skipped
stitches and other stitching problems. Too
little distance may cause noise and/or hook
(needle guard) wear.
8. Lightly tighten the first screw with the 2 mm ball end L hex tool, while providing resistance against the
adjustment, by holding the hook in place with your other hand. Carefully rotate the hook on the hook-
shaft to set the loop lift. Carefully snug and then tighten the first screw.
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Loop lift and needle height
both set correctly
Hook screws
Loop lift and needle height
both set correctly