HQ Infinity Service Manual
| 57
5.
Turn the hand wheel until the needle bar is at
its lowest position or BDC.
6.
Place the loop lift clamp on the needle bar
about 1/4-inch down from the bearing and set
the thumbscrew lightly.
7. Place the 2.6mm feeler gauge between the
clamp and the bottom of the head frame needle
bar bearing surface, with the machined edge
facing up.
8.
Raise the clamp on the needle bar up against the feeler gauge, reset and tighten the clamp pinching
the 2.6mm feeler gauge in between the clamp and the bearing surface. (
At this point the needle bar
is still BDC.
)
This step may need to be repeated a few times in order to remove all excess play between the clamp
and gauge.
9.
After the clamp is tight, remove the gauge.