Instruction Manual
Page 20
... the needle bar lift stroke and height. Adjust the lubricating oil supply to 0.2 mm. Refer to p.7 of the Supplementary instruction manual. Threading Needle groove direction Polish the needle hold in the proper direction. z 8 Thread breaks Loose threads Bobbin case opener gap.... Improper thread take -up spring tension and stroke. mentary instruction manual. (TROUBLESHOOTING GUIDE) Trouble Cause Check Remedy Page Damaged rotary hook holding slot Refer to "Thread Tension", Refer to p.12 of the...
... the needle bar lift stroke and height. Adjust the lubricating oil supply to 0.2 mm. Refer to p.7 of the Supplementary instruction manual. Threading Needle groove direction Polish the needle hold in the proper direction. z 8 Thread breaks Loose threads Bobbin case opener gap.... Improper thread take -up spring tension and stroke. mentary instruction manual. (TROUBLESHOOTING GUIDE) Trouble Cause Check Remedy Page Damaged rotary hook holding slot Refer to "Thread Tension", Refer to p.12 of the...