Rotational Timing Measurement And Adjustment - Strongarm Walking Foot Sewing machine User Manual

Rotational Timing Measurement and Adjustment.

If the machine is still not sewing properly, check the rotational timing.
Set the machine to straight stitch, with the needle in the centre position. Place the machine on
its back. Remove the bobbin retaining ring. Now turn the balance wheel until the needle is in its
absolute lowest position.
The top of the hook should now be left of the needle by between 3.2 and 4.7 mm.
3.2-4.7mm
To adjust the rotational timing, you need to loosen the two set screws that lock the shuttle
driver to the shaft.
First note how far left and right the shuttle driver is fitted to the shaft. You want to adjust the
rotational timing while keeping the driver from shifting left and right on the shaft.
Using a 2mm Allen key, undo the two set screws. You'll need to rotate the balance wheel after
loosening the first screw to get at the second one.
Once the two screws have been loosened, rotate the driver so the hook sits left of the needle
by 3.2 to 4.7mm, when the needle is in its lowest position.
Once set, firmly re-tighten the two set screws, making sure the driver hasn't slipped up or
down the shaft.