Performance Problems; Fault-Finding - Husqvarna HUSKYLOCK 900 Handbook

Problem Probable cause Possible correction
1.
Does not feed. Presser toot pressure too Turn pressure adjustment diai c(ockw,se to
increase presser toot pressure. See ae 2'
2, Needle breaks. (1) Needle bent, or needle ho
Insert new needle.
See page 5
blunt.
(2) Needles incorrectly set. Re-set needle, (See page 5)
L
(3) Fabric has been pulled. Do not press or pull fabric—guide it gently.
2. Thread breaks.
(1) Improper threading Re-thread machine See page 8—li)
(2) Thread tangled.
Check spooi pin, thread holders. etc. and
remove tangled thread.
(3) Thread tension too tight.
See page 16—18 "Thread tension'
(4) Needle incorrectly set.
Re-set needle. (See page 5)
(5) Wrong needle used.
Use sewing machine needles—
SCHMETZ i30/705H
-.
Skipped stitches
(1) Needle bent, or needle tip Insert new needle. (See page 5)
blunt.
(2) Needle incorrectly set. Re-set needle. (See page 5)
(3) Wrong needle used.
Use sewing machine needles—
SCHMETZ 130/705H
(4) Improper threading
Re-thread machine. (See page 8—li)
(5) Presser foot pressure too
Turn pressure adjustment dial clockwise to
weak.
increase presser foot pressure. (See page 22(
5. Stitches not uniform. Thread tension not adjusted
See page i6—l8 "Thread tension".
properly.
5. Fabric puckers.
(1) Thread tension too tight.
Decrease thread tension when sewing light
weight or fine fabric. (See page l6—18)
(2) improper
threading or
Re-thread machine. (See page 8—il)
thread tangled.
Machine does not work.
(.1) Presser foot is in upper
Lower the presser foot. (900(
Monitor flashes, 900( position. (900)
(See page 3)
(2) Machine is
locked
by
Remove tangled thread.
thread tangle.
Check and re-thread machine.
(See page 8'—ll(
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