25
9) Timing adjustment of needle and feed dog
Set the stitch length to the maximum and place the thread take-up lever① in the highest position. (As a standard, a carved sign “C”will
appear on the belt cover window and the feed dog② will rise to touch the surface of needle plate③. The needle tip④ will move down to
touch the needle plate③.) If the position is not correct, make the adjustment as indicated in the following.
A. Disassemble the bed cover.
B. Loosen the fixing screw of the lower feed cam⑤ to control the position of the feed dog and fasten the screw firmly afterwards.
※ Normally, the No. 1 screw⑥ of the lower feed cam faces the centerline of the lower feed cam connecting rod⑦ when the needle
bar is in the highest position.
[ Fig. 38 ]
①
⑦
⑥
⑤
②
④
③
Caution
▶After disassembling and adjusting a safety device, always place it back to the original position and
check whether it functions as intended.
▶Use both hands when pushing the machine backward or returning it to the original position.
Due to the weight of the machine, your hand can get stuck in the machine if you should slip.
▶When adjusting the machine with the switch on, be sure to pay extreme caution.
▶Only trained engineers must perform troubleshooting or inspection of the machine.
▶For electrical repair or inspection, consult with qualified technicians or agent.
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