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Brother International HE-800B Instruction Manual - English - Page 71

Draining the oil, 8-3. Cleaning the control box air inlet port

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8-2. Draining the oil Bed base 8. CLEANING 3. Remove the bobbin case, and remove dust and lint from around the shuttle and fixed knife. Also wipe the bobbin to remove oil. * Periodically clean around the bobbin thread trimmer underneath the needle plate to remove any dust and thread scraps. If you continue using the sewing machine while dust or thread scraps have built up, it may cause the work clamp lifter pulse motor to go out of step. 2159Q 1. Gently tilt back the machine head. 2. Place the oil tank (1) against the underside of the table, and then remove the screw (2). 3. After the lubricating oil has been drained, make sure that the O-ring (3) is in the correct position, and then tighten the screw (2). * Wipe the magnet (4) and the bed base (5) so that they are free from dirt. 4070M 8-3. Cleaning the control box air inlet port Use a vacuum cleaner to clean the filter in the air inlet port (2) of the control box (1) at least once a month. 4875M HE-800B 62

Section	Page
COVER	1
SAFETY INSTRUCTIONS	3
[1] Safety indications and their meanings	3
[2] Notes on safety	4
[3] Warning labels	6
CONTENTS	8
1. NAMES OF MAJOR PARTS	10
2. SPECIFICATIONS	11
2-1. Specifications	11
2-2. Standard sewing pattern list	12
3. INSTALLATION	13
3-1. Table processing diagram	13
3-2. Installing the control box	14
3-3. Installing the flange nut	15
3-4. Installing the bed base	15
3-5. Installing the machine head	16
3-6. Installing the head rest	16
3-7. Installing the operation panel	17
3-8. Installing the oil stopper plate	18
3-9. Connecting the cords	18
3-10. Connecting the ground wire	21
3-11. Installing the treadle connecting rod	22
3-12. Installing the cotton stand	23
3-13. Installing the eye guard	23
3-14. Lubrication	24
3-14-1. Lubricating the bed base	24
3-14-2. Lubricating the arm	24
3-14-3. Lubricating the rotary hook	25
3-15. Connecting the power cord	25
3-16. Checking the safety switch	28
3-17. Installing the motor cover	28
3-18. Installing the auxiliary table	29
4. PREPARATION BEFORE SEWING	30
4-1. Installing the needle	30
4-2. Threading the upper thread	31
4-3. Winding the lower thread	33
4-4. Installing the bobbin case	34
4-5. Thread tension	35
4-5-1. Lower thread tension	35
4-5-2. Upper thread tension	36
4-5-3. Thread take-up spring height	37
4-5-4. Thread take-up spring tension	37
4-5-5. Adjusting arm thread guide	37
5. USING THE SEWING MACHINE (OPERATION PANEL: BASIC OPERATION)	38
5-1. Name and function of each operation panel item	38
5-2. Starting the sewing machine	40
5-3. Operating the treadle	41
5-4. Program setting method	42
5-4-1. Parameter list	44
5-4-2. Setting the length of the hole	50
5-4-3. Buttonhole sewing size	50
5-4-4. Main restrictions when setting parameters	50
5-5. Rear tack vector shape programs	51
5-6. Underlay programs	52
5-7. Cutter operation	53
5-8. Copying programs	54
6. USING THE SEWING MACHINE (SEWING OPERATION)	56
6-1. Automatic sewing (Automatic sewing mode)	56
6-2. Test feeding mode	57
6-3. Using the STOP switch	59
6-3-1. Pausing sewing during automatic sewing	59
7. USING THE SEWING MACHINE (OPERATION PANEL: ADVANCED OPERATION)	61
7-1. Using cycle programs	61
7-2. Setting memory switches	64
7-2-1. List of memory switch settings	65
7-3. Resetting the data (initialization)	66
7-4. Changing the lower thread counter setting	67
7-5. Changing the production counter setting	68
7-6. Displaying the help screen	69
8. CLEANING	70
8-1. Cleaning	70
8-2. Draining the oil	71
8-3. Cleaning the control box air inlet port	71
8-4. Cleaning the eye guard	72
8-5. Checking the needle	72
8-6. Cleaning the length feed plate	72
9. STANDARD ADJUSTMENTS	73
9-1. Adjusting the needle bar height	73
9-2. Adjusting the needle and hook timing	74
9-3. Adjusting the clearance between needle and hook tip	75
9-4. Adjusting the inner rotary hook and rotary hook holder overlap	75
9-5. Adjusting the work clamp pressure	75
9-6. Adjusting the cutter installation	76
9-7. Adjusting the installation height of the upper thread trimmer	77
9-8. Adjusting the upper thread trimmer opening timing	78
9-9. Adjusting the lower thread clamp timing	79
9-10. Adjusting the bobbin presser	79
10. TABLE OF ERROR CODES	80
11. TROUBLESHOOTING	86
11-1. Upper thread breakage	86
11-2. Skipped stitches	87
11-3. Uneven seams (1) …… At the sewing start	89
11-4. Uneven seams (2) …… Lower thread is lifted up at the sewing start	90
11-5. Uneven seams (3) ……Seam lifts up at the sewing start	90
11-6. Uneven seams (4) …… Uneven sewing pitch at the sewing start	91
11-7. Uneven seams (5)……Poor rounding of seam	91
11-8. Uneven seams (6) …… Around rear tack or front tack	91
11-9. Uneven seams (7) …… Loose thread end at end backtack	91
11-10. Uneven seams (8) …… Thread sticking out at end backtack	92
11-11. Uneven seams (9) …… Sticking in needle plate	92
11-12. Uneven seams (10) …… All stitches	93
11-13. Upper thread run out	94
11-14. Unraveling of thread trimmed by upper thread trimmer assembly	96
11-15. Upper thread miss-trimming	97
11-16. Needle strikes upper thread trimmer	98
11-17. Needle breakage	99
11-18. Imperfect cutter function (imperfect material cutting)	100
11-19. Cutter does not return	100
11-20. Cutter and upper thread trimmer touch	101
11-21. Seam is cut	101
11-22. Upper thread miss-winding	102
11-23. Work clamp is not raised (1)…… Pulse motor stepping sound cannot be heard	102
11-24. Work clamp is not raised (2)…… Pulse motor stepping sound can be heard	103
11-25. Lower thread is not trimmed (pulls when material is removed)	104
11-26. Feed mechanism does not operate or motor is out of step	104
11-27. Needle does not zigzag or noise occurs when needle zigzags	105
11-28. Sewing machine stops during sewing	105
11-29. Upper shaft does not rotate as far as the needle up stop position	105
11-30. Operation panel display freezes and operation is not possible	105