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[Response to problems occurring at the beginning of sewing]
• In the case needle thread breakage occurs when using a thin thread or fragile thread
• In the case needle thread is not tucked on the wrong side of material
• In the case needle thread breakage occurs when starting sewing from the material end (such as sewing
the material with needle thread tucked on the undersurface of material)
If any of the aforementioned problems occurs, the presser foot pressure should be reduced to allow the nee-
dle thread pinched between the presser foot and the material to be released smoothly.
(The recommended presser foot pressure is 30 N (3 kg) or less.)
Adjust the presser foot pressure and the sewing speed appropriately to prevent insufficient feed efficiency
due to jumping or other faults of the presser foot. After the adjustment, confirm the adjustment result by actu-
ally sewing the material.
Needle thread breakage can be reduced and the needle thread can be smoothly tucked in to the undersur-
face of material by lifting the presser foot by a minute amount at the beginning of sewing.
(Set the parameter P161 to 1, and adjust the parameters P162, P164 and P165.)
1. The amount of uplift of the presser foot above the throat plate varies according to the ma-
terial thickness of the item to be sewn and the presser foot pressure. Be sure to check the
actual condition before starting sewing.
2. If the adjustment is increased while the presser foot presser is high, the operating noise
will become larger. Adjust the adjustment value and the presser foot pressure while visually
checking the needle thread condition.
No.
ON / OFF of the presser lifting operation when clamping the thread is set with the
P161
function setting item.
0: OFF
1: ON
Degree of an angle at which the presser foot starts going up when clamping the
P162
thread
Degree of an angle at which the presser foot starts going up when clamping the
thread is set with function setting item.
Setting of the amount of lift of the presser foot when clamping the thread
P164
The amount of lift of the presser foot when clamping the thread is set with this
function setting item.
Time during which the presser foot goes up when clamping the thread
P165
The time during which the presser foot goes up when clamping the thread is set
with this function setting item.
Description
– 59 –
Setting range
Default
0-1
0
0-359
100
0-500
50
1-990
20
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