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2. 上線切線的調整
⑴上線切刀的切線力的調整
上線切刀切線力不穩定的話，始縫時上線容
易跳線。
1) 上線切線力弱時，鬆開螺絲①，卸下上線
切刀②。
2) 用手把壓線彈簧前端輕輕弄彎，把壓線彈
簧③和上切刀④的接觸間隙調整為沒有
間隙。
注意
CAUTION
P68
為了防止突然起動造成人身事故，請關掉電源，確認馬達確實停止轉動後
再進行操作。
To protect against possible personal injury due to abrupt start of the
machine, be sure to start the following work after turning the power off
and ascertaining that the motor is at rest.
①
②
③
2. Adjusting the needle thread trimmer
(1) Adjusting the thread grasping force of the
needle thread trimmer
If the needle thread trimmer fails to
provide consistent thread grasping force,
the needle thread can slip off at the
beginning of sewing.
1) If the thread grasping force of the
needle thread trimmer has reduced,
loosen setscrews ① and detach needle
thread trimmer ② .
2) Slightly bend the top end of thread
presser spring ③ so that it comes in
contact with thread trimming blade of
upper knife ④ over the length with no
clearance and so that the needle thread
trimmer securely holds the thread
regardless of the position of the thread
trimming blade at which the thread is
trimmed.
④
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