Oil well and clean everything then run the warm-up cycle with the bobbin out and top thread unthreaded. Rethread the machine and run the needle position auto-adjustment. The machine needs to be stitching when running this or any adjustment. . To run the needle position auto-adjustment, hold down the red single stitch button when turning on your machine. This will put you in adjustment mode. Turn the knob on the control panel at the back of your machine to B1. Push the red single stitch button again. You will hear three short beeps and the machine will take a few stitches. Make sure you move your machine while the stitches are being made so that there is no build-up of stitches. When the machine finds the proper needle position, it will end with three short beeps.
If the proper take-up lever position is not reached after taking 20 stitches, the process stops with one long beep. Possible causes of this may include intermittent drag (tight spot) in the mechanism, trapped thread, improper tension setting, etc. After eliminating the problem, you need to repeat the auto adjustment until proper completion. You can also run the needle position adjustment. The needle position sensor's timing is set at the time of the installation, there is no need to re-time the sensor. It is recommended, however, to check the proper timing before the needle position adjustment takes place.
To check the sensor timing:
- While watching the red FAIL light, turn the handwheel very slowly to the forward direction (counter-clockwise, if viewed from the rear) until the light comes on. If the light just flashes, turn the handwheel backward until the light is on again. With fine adjustments of the handwheel the red light can be constantly turned on.
- If the red light stays on when the needle is at its lowest position, the timing is correct, you can proceed to the UP/DOWN POSITION ADJUSTMENT.
- If the red light is turned on when the needle is not at the desired position, please call the manufacturer or IntelliStitch installer for assistance. This may be an encoder problem.
The AUTO ADJUSTMENT sets the NEEDLE UP/DOWN POSITIONS to levels that are optimal for a machine with average mechanical drag. However, just like in case of the REGULATED STITCH SPEED, on tighter machines these positions may be slightly off after the AUTO ADJUSTMENT. In case of a tighter machine, we strongly suggest to investigate the causes of the tightness first. Only if the investigation does not reveal mechanical problems as the cause of tightness do we recommend to adjust the NEEDLE UP/DOWN POSITIONS.
The NEEDLE UP POSITION should be readjusted when after pulling it up with the needle position button (DOWN KEY), or stopping the machine with the DOWN light off
- the take-up lever is not high enough to release the thread from the hook, in which case the needle up position needs a forward adjustment, or
- the machine over-rotates, i.e. the needle passes its top position and gets too close to the fabric again, when a backward adjustment is needed.
The needle is at its proper up position when the take-up lever is at or near the position where it stops after using the RED SINGLE STITCH BUTTON.
The NEEDLE DOWN POSITION should be readjusted when after moving it down with the needle position button (DOWN KEY), or stopping the machine with the DOWN light on
- the needle is not stopping low enough to keep the arm securely at the given position, in which case the needle down position needs a forward adjustment, or
- the machine over-rotates, i.e. the needle passes its bottom position and starts coming out of the fabric, when a backward adjustment is needed.
The needle is at its proper down position when it stops about 1/8" BEFORE its lowest position.
To adjust the NEEDLE UP/DOWN POSITONS:
- Turn the SELECTOR DIAL to the 12 o'clock position.
- Push and hold down the RED BUTTON. Instead of a full single stitch cycle, a needle positioning step (up or down) will be made.
To differentiate between the "up" and "down" positions a beep will sound when the needle is supposed to be at the "up" position.
- Check the up or down position of the needle.
- If the up(down) position is correct, release the RED BUTTON, and go to Step 1 to check the other position.
- If the up(down) position is not acceptable, while still holding the RED BUTTON down, test whether forward or backward adjustment is necessary:
- Turn the handwheel slowly forward (counter-clockwise, if viewed from the rear)
- If the take-up lever and the tip of the needle are going TOWARD the right positions, FORWARD ADJUSTMENT is necessary, so turn the DOWN light OFF.
- If the take-up lever and the tip of the needle are going AWAY from the right positions, BACKWARD ADJUSTMENT is necessary, so turn the DOWN light ON.
- While still holding the RED BUTTON down, hit the BLACK BUTTON. A beep will indicate that the new position was stored in the computer's memory.
- Release the RED BUTTON. To check the setting you have just adjusted, press and release the RED BUTTON, then press the RED BUTTON again and hold it down. Go back to step 5.
- If the setting is correct for the position you have just checked, release the RED BUTTON then press the RED BUTTON again and hold it down. You are now checking the opposite position. Repeat the procedure until the desired needle positions are reached.