Owner's Manual

T-8421C, 8422C, 8452C, 8722C, 8752C
CONTENTS
1. USEFUL FUNCTIONS FOR OPTIMUM
SEWING................................................ 1
2. NAMES OF MAJOR PARTS ................ 2
3. INSTALLATION.................................... 3
3-1. Table processing diagram .............................. 4
3-2. Installation ...................................................... 4
3-3. Lubrication ...................................................... 8
3-4. Connecting the cords...................................... 10
3-4-1. Opening the control box cover............ 10
3-4-2. Connecting the cords .......................... 10
3-5. Test operation (Operating the treadle) ........... 15
3-6. Adjusting the treadle operation....................... 16
4. PREPARATION BEFORE SEWING.....17
4-1. Installing the needle........................................... 17
4-2. Removing the bobbin...................................... 18
4-3. Winding the lower thread................................ 19
4-4. Installing the bobbin........................................ 20
4-5. Threading the upper thread............................ 22
4-6. Adjusting the stitch length............................... 24
4-7. Using the knee lifter........................................ 24
4-8. Using the thread wiper
(models with thread trimmer only) .................. 24
4-9. Corner sewing method (T-8452C, 8752C) ..... 25
4-9-1. To stop the needle bars
(right and left) ..................................... 25
4-9-2. Number of stitches: quick-reference
guide ................................................... 25
5. USING THE G50 OPERATION PANEL
(BASIC OPERATIONS)........................26
5-1. Names and functions...................................... 26
5-2. Sewing start and end backtack stitches ......... 28
6. SEWING ...............................................29
6-1. Sewing ............................................................29
6-2. Backtacking.....................................................30