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6. Timing Adjustments
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IMPORTANT
: These timing adjustments should only be performed after you have completed all of
the checks and adjustments in section 5,
General Checks and Adjustments
.
Visual Timing Check
Before proceeding with the timing adjustments:
1. Make sure the machine is turned off and unplugged before starting to work on the machine. (Remove
the cord at back of machine.)
2. Make sure the needle is the correct needle system (system 134), is a size 100, and is tested for
straightness.
3. Install the needle, ensuring that the eye is straight out to the front of the machine and the end of the
needle (butt) is touching the top of the needle stop/sight hole in the needle clamp above the needle
clamp screw.
4. With the needle bar in the lowest position check for needle bar play.
5. With the needle point lowered into the needle plate check needle position – it should be relatively
centered so that it will work properly with special accessory feet.
6. Check the hook shaft for excessive play.
7. Check the needle plate for needle impact marks and damage. Replace or repair the needle plate as
needed.
8. Put the needle at its bottom
dead center (BDC), or its lowest
position. The hook point should
look like this:
