TM 10-3530-207-14
Table 3-1.
Operator Troubleshooting - continued.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
CLOTHING SEWING MACHINE
Step 5. Check machine settings.
a.
Machine settings may have accidentally changed during stitching. Check machine settings and
make sure they are correct by following operating instructions of paras. 2-11j and 2-11k.
b.
Replace broken needle with new needle of correct size, class, and variety (paras. 2-11a and 2-
11b).
Step 6. Presser foot may have become loose or the throat plate may have moved from full in position.
a.
Replace broken needle with new needle of correct size, class, and variety (paras. 2-11a and 2-
11b).
b.
If presser foot is loose, notify next higher level of maintenance.
Step 7. You may have pulled too hard on the fabric while stitching.
a.
Do not pull on fabric while stitching. Allow the feed dogs to pull the fabric while stitching. Follow
operating instructions para. 2-11i.
b.
Replace broken needle with new needle of correct size, class, and variety (paras. 2-11a and 2-
11b).
9.
NEEDLE THREAD BREAKS.
Step 1. Check that needle is not installed backward or needle eye is not threaded backward. Check that
threading is correct.
a.
If needle is installed backward, reinstall needle correctly in needle bar clamp (para. 2-11b).
b.
Needle should be threaded from left to right through the needle eye and machine must be
threaded correctly (para. 2-11 c).
3-12
