Pfaff hobbylock 794 Owner's Manual - Page 28

Changing needles Removing needle: Unplug the machine. Turn the hand wheel counter-clockwise to raise the needle bar to its highest position. Loosen the needle clamp screw with the allen wrench and pull the needle Out. Inserting needle: When the needle bar is at the highest position, insert a new needle in the needle holder, making sure the groove of the needle faces you and scarf A (centre of illustration) can be seen from the side. Push the needle up as far as it will go and tighten the needle clamp screw. Notes: System D8 x 1, or 1738 needles are used with this machine. Although the correct needle size depends on the fabric and thread used, a size 14 needle is recommended. An incorrectly inserted needle will cause thread breakage and skipped stitches. Always turn the machine OFF when changing needles. Changing knives Knives are available as spare parts and should be replaced when they are blunt. Removing lower knife: Unplug the machine. Raise the needle bar. Push the upper knife holder to the far right and turn the knob clockwise until it clicks.