Parts Manual - English
Page 2
MADE IN JAPAN 2*St*Illgitig tVE:: Twin needle unison feed lock stitcher with large hook BROTHER INDUSTRIES, LTD. MADE IN JAPAN ® -5 : F/ Standard -305: #;4,139+4 vM•yan/ Thread trimmer + Quick reverse (Solenoid type) LS2-B877- 1 *Sitattirig / Single needle unison feed lock stitcher with large hook BROTHER INDUSTRIES, LTD. • LT2-B878-
MADE IN JAPAN 2*St*Illgitig tVE:: Twin needle unison feed lock stitcher with large hook BROTHER INDUSTRIES, LTD. MADE IN JAPAN ® -5 : F/ Standard -305: #;4,139+4 vM•yan/ Thread trimmer + Quick reverse (Solenoid type) LS2-B877- 1 *Sitattirig / Single needle unison feed lock stitcher with large hook BROTHER INDUSTRIES, LTD. • LT2-B878-
Parts Manual - English
Page 31
... SCREW, SOCKET (CP) 5M6.35 PLUNGER SPRING, COMPRESSION SCREW, SM6.35X5 SET SCREW, SOCKET (CP) 5M6.35 SET SCREW, SOCKET (CN) 5M6.35 118-W77-305 24 K. IJ -D9 Z 1 9 -r3z>/i-U-D 1 o V I i.-n- 1 rmY9 I -:';h 1 7* F X*55.95 1 D'Y IL-R.-p(* 1 otn7 idn-i• > 5>99 1 7* I- )( *55.95 1 L,. >Ir.) ll > h 1 9nv I1 7 I) ti 1 9*mv bR* 1 t5- 1 9 -(Q> 97- T RI*/ Lower...
... SCREW, SOCKET (CP) 5M6.35 PLUNGER SPRING, COMPRESSION SCREW, SM6.35X5 SET SCREW, SOCKET (CP) 5M6.35 SET SCREW, SOCKET (CN) 5M6.35 118-W77-305 24 K. IJ -D9 Z 1 9 -r3z>/i-U-D 1 o V I i.-n- 1 rmY9 I -:';h 1 7* F X*55.95 1 D'Y IL-R.-p(* 1 otn7 idn-i• > 5>99 1 7* I- )( *55.95 1 L,. >Ir.) ll > h 1 9nv I1 7 I) ti 1 9*mv bR* 1 t5- 1 9 -(Q> 97- T RI*/ Lower...
Instruction Manual - English and Spanish
Page 16
...the rotary hook lubrication amount 73 10-10. Replacing the rotary hook 91 13-2. Lubrication 20 5-13. Installing the cap [B878-305, B877-305 (option 30 6-5. THREAD TENSION 39 8-1. Adjusting the presser foot pressure 43 8-3. Upper and lower shaft timing adjustment ....... 71 ...KNIFE (-305 76 12. Installing the pulley ring 17 5-8. Checking the machine pulley rotating direction 23 6. Adjusting the walking foot and inner presser foot 45 9. Adjusting the presser foot height 55 10-3. Changing the knee lifter heaviness 75 11. TROUBLESHOOTING GUIDE 100 LS2-B877, LT2...
...the rotary hook lubrication amount 73 10-10. Replacing the rotary hook 91 13-2. Lubrication 20 5-13. Installing the cap [B878-305, B877-305 (option 30 6-5. THREAD TENSION 39 8-1. Adjusting the presser foot pressure 43 8-3. Upper and lower shaft timing adjustment ....... 71 ...KNIFE (-305 76 12. Installing the pulley ring 17 5-8. Checking the machine pulley rotating direction 23 6. Adjusting the walking foot and inner presser foot 45 9. Adjusting the presser foot height 55 10-3. Changing the knee lifter heaviness 75 11. TROUBLESHOOTING GUIDE 100 LS2-B877, LT2...
Instruction Manual - English and Spanish
Page 120
...- If the bobbin is 10 - 14 mm of the feed dog correct? Adjust the walking foot, inner presser foot and needle timing. 66 101 LS2-B877, LT2-B878 (English) If it is one size smaller in the V-belt when it is bent or broken, replace the needle. • Is... the needle properly installed? If the lower thread retainer springs are not pressing against the lower threads after thread trimming? (-305) Adjust the pretension. • Are the threads not being used . Adjust so that is incorrect, install the needle correctly. • Is the machine...
...- If the bobbin is 10 - 14 mm of the feed dog correct? Adjust the walking foot, inner presser foot and needle timing. 66 101 LS2-B877, LT2-B878 (English) If it is one size smaller in the V-belt when it is bent or broken, replace the needle. • Is... the needle properly installed? If the lower thread retainer springs are not pressing against the lower threads after thread trimming? (-305) Adjust the pretension. • Are the threads not being used . Adjust so that is incorrect, install the needle correctly. • Is the machine...
Instruction Manual - English and Spanish
Page 121
...tips of the movable knives. The bobbin winding amount should not be more than the light-alloy bobbins specified by Brother. 29 · 30 26 28 29 · 30 28 LS2-B877, LT2-B878 (English) 102 Lower thread Spinning of the movable knives and the rotary hook stoppers? Upper thread ... the movable knife which is tangled at the sewing start. Push the rotary hooks down to check • Is the timing correct during thread trimming (-305) 80% •Is the bobbin spinning direction correct when the lower thread is 0.05 - 0.2 mm. • Is the tension release mechanism working ...
...tips of the movable knives. The bobbin winding amount should not be more than the light-alloy bobbins specified by Brother. 29 · 30 26 28 29 · 30 28 LS2-B877, LT2-B878 (English) 102 Lower thread Spinning of the movable knives and the rotary hook stoppers? Upper thread ... the movable knife which is tangled at the sewing start. Push the rotary hooks down to check • Is the timing correct during thread trimming (-305) 80% •Is the bobbin spinning direction correct when the lower thread is 0.05 - 0.2 mm. • Is the tension release mechanism working ...
Instruction Manual - English and Spanish
Page 122
... position is • Is the needle up springs too large? Polish the hooks to comply with product liability regulations. - 58 85 (Step 3) 103 LS2-B877, LT2-B878 (English) Adjust the timing for all pieces until the whole of the needle is extremely dangerous to account for the thread take -up... spring tensions weaker. • Are the ranges of the cotton stand easily? Needle up stop position too low? (-305) not consistently the same. Broken needles • Is the material being pushed or pulled with a finger. 12. If the needle bar has been turned...
... position is • Is the needle up springs too large? Polish the hooks to comply with product liability regulations. - 58 85 (Step 3) 103 LS2-B877, LT2-B878 (English) Adjust the timing for all pieces until the whole of the needle is extremely dangerous to account for the thread take -up... spring tensions weaker. • Are the ranges of the cotton stand easily? Needle up stop position too low? (-305) not consistently the same. Broken needles • Is the material being pushed or pulled with a finger. 12. If the needle bar has been turned...