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Brother International BAS-300G Instruction Manual - English - Page 68

Adjusting the position of the movable knife

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10. STANDARD ADJUSTMENTS 10-10. Adjusting the position of the movable knife 2979B 5232Q 5234Q Reverse position 5255Q 5233Q 1. Open the top cover and tilt back the machine head. 2. Turn the pulley (1) by hand in the direction of the arrow to move the needle bar to its lowest position, and push the thread trimming solenoid (2) as far as it will go. 3. With the collar (3) inserted into the groove of the thread trimmer cam (4), turn the pulley (1) by hand to set the driving lever (5) to the reverse position (when the thread take-up (6) is close to its lowest position). 5235Q 5236Q 4. Loosen the bolt (7). 5. Move the thread trimming rod H (9) forward or back to adjust so that the distance from the ridge line on the right side of the needle plate to the ridge line on the movable knife (8) is 9.5 − 9.9 mm. 6. After tightening the bolt (7), check the above position once more. (Continued on next page) 59 BAS-300G, BAS-311G, BAS-326G

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
3. INSTALLATION	12
3-1. Table processing diagram	13
3-2. Installing the control box	14
3-3. Installing the oil pan	14
3-4. Installing the machine head	15
3-5. Tilting the sewing machine head	18
3-6. Installing the operation panel	19
3-7. Installing the treadle unit (motor-driven work clamp specifications)	20
3-8. Installing the two-pedal foot switch (pneumatic work clamp specifications)	20
3-9. Connecting the cords	21
3-10. Connecting the ground wire	23
3-11. Connecting the power cord	24
3-12. Installing the cotton stand	24
3-13. Installing the pneumatic unit (pneumatic work clamp specifications)	25
3-14. Installing the eye guard	26
3-15. Installing the motor cover	26
3-16. Lubrication	27
3-17. Installing the machine head fixing bolt	28
4. PREPARATION BEFORE SEWING	29
4-1. Installing the needle	29
4-2. Threading the upper thread	29
4-3. Winding the lower thread	31
4-4. Installing the bobbin case	32
4-5. Thread tension	33
4-5-1. Lower thread tension	33
4-5-2. Upper thread tension	33
4-6. Home position detection	34
5. USING THE OPERATION PANEL (BASIC OPERATIONS)	35
5-1. Name and function of each operation panel item	35
5-2. Loading sewing data	37
5-3. Setting the program number	37
5-4. Setting the X-scale and Y-scale	38
5-5. Setting the sewing speed	38
5-6. Checking the sewing pattern	39
5-7. Setting the work clamp lift amount	40
6. USING THE OPERATION PANEL (ADVANCED OPERATIONS)	42
6-1. List of advanced functions	42
6-2. Setting memory switches	43
6-3. List of memory switch settings	44
6-4. Using the lower thread counter	45
6-5. Using the production counter	46
6-6. Setting the split number	47
6-7. Using user programs	48
6-8. Using cycle programs	51
6-9. Direct selection (combination table)	53
6-10. X and Y parallel movement of sewing pattern	54
6-11. Clearing memory data (reinitialization)	55
7. USING CF CARDS	56
7-1. Notes on handling CF cards (sold separately)	56
7-2. Structure of a CF card folder	56
7-3. Data read/write mode	57
7-3-1. Reading all sewing data from the CF card at once	58
7-3-2. Writing all sewing data to the CF card at once	59
8. SEWING	60
8-1. Sewing	60
8-2. Using the STOP switch	61
8-3. Using the thread wiper switch	61
9. CLEANING	62
9-1. Cleaning the rotary hook	62
9-2. Cleaning the control box air inlet ports	63
9-3. Draining the oil	63
9-4. Cleaning the eye guard	63
9-5. Checking the needle	63
9-6. Lubrication	63
10. STANDARD ADJUSTMENTS	64
10-1. Checking the machine head switch	64
10-2. Thread take-up spring	65
10-3. Arm thread guide R	65
10-4. Adjusting the needle bar height	66
10-5. Adjusting the needle bar lift amount	66
10-6. Adjusting the needle contact pressure of the driver	66
10-7. Adjusting the needle clearance	67
10-8. Adjusting the shuttle race thread guide	67
10-9. Rotary hook lubrication amount	67
10-10. Adjusting the position of the movable knife	68
10-11. Replacing the movable and fixed knives	70
10-11-1. Installing the feed plate	71
10-12. Adjusting the thread wiper	72
10-13. Presser foot installation position	72
10-14. Changing the intermittent stroke	73
10-15. Adjusting the work clamp lift amount	75
10-16. Adjusting the air pressure (pneumatic work clamp specifications)	75
11. TABLE OF ERROR CODES	76
12. TROUBLESHOOTING	80
13. 7-SEGMENT DISPLAY	83