HIGHLEAD DY-850, Instruction Manual, Page: 5 / 46

— —
3
3）润滑
Oiling
（1）油量
油量必须按油盘内标记加注。图中标记 A 是油量最高位，B 是油量最低位。注意油量不得低于标记
B，否则缝纫机各部位就会出现进油停止，造成发热咬死情况。
（2）加油
必须用特 18#高速缝纫机油，运转前油量加至标记 A。
（3）换油
旋下放油螺钉 C，排净废油。清扫油盘污尘，旋
紧放油螺钉 C，加注新油。
(1)
Amount of oil
Required amount of oil. Line (A) on the oil
reservoir: Max. oil level. Line (B) on the oil reservoir:
Min. oil level. If oil level goes down under line (B),
oil cannot be distributed to each part of the machine,
thus causing the parts a seizure.
(2)
Replenishing
Always use only No.18 special machine oil for high speed sewing. Be sure to replenish oil to Line (A)
before starting operation.
(3)
Replacing oil
To replace oil, remove Screw (C) to drain oil. After completely draining off oil, clean the oil reservoir and
securely tighten Screw (C), then fill the reservoir with fresh oil.
4）试车
Run-in operation
新机器在开始使用和长期搁置重新使用时，先卸下机头上部的橡皮塞 A，充分加油，然后抬起压脚 B
进行低速运转 1000-1500 针/分，并观察油窗 C 的
喷油情况，润滑正常后，仍须保持低速 30 分钟运
转试验，以后逐渐提高缝纫速度。经过一个月左右
的使用，使机器充分跑合。然后根据工作的性质再
提高到最高转速。
Run-in operation is required for a new sewing
machine, or a sewing machine left out operation for a
considerable length of time. Remove Rubber Plugs
(A) on the top of the arm and replenish sufficient
amount of oil. Lift Presser Foot (B). Run the machine