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Brother International BAS-342G Basic Instruction Manual - English - Page 32

Thread tension

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5. PREPARATION BEFORE SEWING 5-6. Thread tension Thread tension reference Upper thread Lower thread Upper thread tension (N) Lower thread tension (N) Pre-tension (N) Needle #20 or similar #20 or similar 1.4 − 1.8 0.3 − 0.4 0.2 − 0.4 DP×17＃19 5-6-1. Lower thread tension Stronger Weaker Adjust the thread tension to the weakest possible tension by turning the thread tension nut (1) until the bobbin case will not drop by its own weight while the thread end coming out of the bobbin case is held. 5-6-2. Upper thread tension 2536Q 1. Turn the tension nut (1) (main tension) to adjust the tension as appropriate for the material being sewn. 2. Use the tension nut (2) (sub tension) to adjust the upper thread trailing length to about 42 mm. Stronger Weaker Stronger Weaker 4003M 24 BAS-342G

Section	Page
COVER	1
SAFETY INSTRUCTIONS	3
CONTENTS	8
1. NAMES OF MAJOR PARTS	9
2. USEFUL FUNCTIONS FOR OPTIMUM SEWING	10
3. TABLE PROCESSING DIAGRAM	11
4. INSTALLATION	12
4-1. Removing the machine head fixing bolts [1]	12
4-2. Installing the control box [2]	13
4-3. Installing the oil pan and support lever base	14
4-4. Installing the machine head	14
4-5. Tilting back and returning the machine head	15
4-6. Installing the gas spring	16
4-7. Installing the operation panel [3]	17
4-8. Installing the solenoid valve assembly	18
4-9. Connecting the air tubes [4]	18
4-10. Installing the air hose [5]	18
4-11. Adjusting the air pressure [6]	19
4-12. Adjusting the speed controller [7]	19
4-13. Connecting the cords [8]	20
4-14. Connecting the ground wire [9]	22
4-15. Securing the cords and air tubes [10]	23
4-16. Installing the eye guard [11]	24
4-17. Installing the cotton stand [12]	24
4-18. Lubrication [13]	25
4-19. Connecting the power cord [14]	26
4-20. Checking the safety switch [15]	26
5. PREPARATION BEFORE SEWING	27
5-1. Installing the needle	27
5-2. Operating the 2-pedal foot switch	27
5-3. Threading the upper thread	28
5-4. Winding the lower thread	30
5-5. Installing the bobbin case	31
5-6. Thread tension	32
5-6-1. Lower thread tension	32
5-6-2. Upper thread tension	32
5-7. Home position detection	33
6. USING THE OPERATION PANEL (BASIC OPERATIONS)	34
6-1. Name and function of each operation panel item	34
6-2. Loading sewing data	36
6-3. Setting the program number	36
6-4. Setting the X-scale and Y-scale	37
6-5. Setting the sewing speed	37
6-6. Checking the sewing pattern	38
6-7. Setting the height of the intermittent presser foot	39
6-8. Notes on handling CF cards (sold separately)	40
7. SEWING	41
7-1. Sewing	41
7-2. Using the STOP switch	42
7-3. Using the thread wiper switch	42