User manual TOYOTA K747

[. . . ] 51 2 1 Before use (Be sure to read this section before use) 1 Before use (Be sure to read this section before use) Important safety instructions These safety instructions are designed to prevent danger or damage arising from the incorrect operation of the machine. Explanation of “ Warning” and “ Caution” Warning Caution Symbol explanation An incorrect operation could result in death or serious injury. An incorrect operation could result in an injury or damage to the machine. Do not damage the power cord, modify it, bend it excessively, jerk it or twist it. [. . . ] Handwheel Presser foot lever Press the presser foot holder lever in the direction of the arrow to release the presser foot. Presser foot holder lever Presser foot 24 zz Installation 1 Position the presser foot pin directly below the groove in the presser foot holder. Presser foot holder 2 Groove Sewing preparations Presser foot pin 2 Lower the presser foot lever to secure the presser foot. Presser foot lever Tip In order to avoid losing the presser foot, we recommend storing the machine when it is not being used with the needle and the presser foot lowered. 25 Changing the needle Caution Before changing the needle, use the main power switch to turn off the sewing machine. 1 2 Turn the handwheel towards yourself to raise the point of the needle higher than the needle plate. Hold the needle in one hand, loosen the needle clamp screw with the screw driver for the needle plate, and remove the needle. Face the flat surface of the needle to the rear and insert until it makes contact with the pin. Firmly tighten the needle clamp screw with the screw driver for the needle plate. Pin Screw driver for the needle plate Needle clamp screw Flat surface zz Correct needle selection Good needle If a faulty needle is used, not only could it impair the sewing performance, but it could also damage the needle plate or hook, or break the needle. ÍFaulty needle The entire needle is bent 26 The point of the needle is crushed / worn away The point of the needle is bent Relationship between the needle, thread and fabric, and adjusting the thread tension The quality of the sewing finish will improve if the needle and thread are changed to match the type of fabric. 0 mm (For details on changing the presser foot, refer to “Changing the presser foot” on page 24. 32 Adjusting thread tension zz Adjustment method for upper thread tension Straight stitch Upper thread is tight Wrong side Right side • Upper thread is tight Model XXX15C Model XXX15D/ SuperJ15 3 Sewing 1 -2 -3 Upper thread is loose Wrong side Right side • Upper thread is loose Zigzag sewing Upper thread is tight + Lower the upper thread tension. Model XXX15C Model XXX15D/ SuperJ15 Right side - 3 +2 +1 Wrong side Upper thread is loose Right side Increase the upper thread tension. Note: If the tension does not change even when you adjust the upper thread tension, thread the upper thread and lower thread again. Wrong side 33 Buttonhole sewing Buttonhole sewing to match the size of the button is possible. For stretch fabric or thin fabric, it is recommended to use a stabilizer for a better buttonhole finish. Caution Before changing the presser foot, use the main power switch to turn off the sewing machine. 1 1 Buttonhole foot 1 2 3 4 1 2 (For details on changing the presser foot, refer to “Changing the presser foot” on page 24. Buttonhole size Center line 3 mm Start line of sewing Button thickness 1 Align the buttonhole foot division line closest to you with the guide line, and lower the presser foot to the start line of sewing on the fabric. (Button diameter+button thickness+3mm) Division line Start line of sewing Guide line Center line 34 Raise the needle to the highest position, set the pattern dial to “1”, sew the left side and stop at the line marked on the fabric. Raise the needle to the highest position, set the pattern dial to “2”, and sew 5 to 6 bar-tack stitches. [. . . ] 3 Check that the needle correctly enters the hole in the needle plate. ** If the bobbin case is not installed correctly, the handwheel does not turn smoothly. If this occurs, remove the needle plate and bobbin case, and attach them again. 4 Maintenance 45 Changing light bulb Warning Before changing the light bulb, use the main power switch to turn off the sewing machine, remove the power plug from the outlet, and then wait until the bulb cools. [. . . ]