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4.5.2) Adjusting presser foot device
1) Align the end of presser foot cam with the center of
upper shaft carved mark, and the carved line of the cam
with the carved mark. And then tighten a turnbuckle.
When presser foot drive cam is not properly placed, its vertical movement timing of the
foot is not right, which may cause friction between the needle plate and the foot.
CAUTION
2) Adjusting presser bar height
Adjust presser bar end to 17mm in the bar holder. And
then tighten a turnbuckle after checking a needle passes
through the center of the presser foot.
Tighten presser bar turnbuckle with 40~45kgf/cm pressure.
Excessive pressure may cause deformation of the bar and problem in operation.
WARNING
3) Adjusting presser foot adjusting arm
Make a space between location link stopper and fixing link hinge screw of presser foot movement by loosening
location link stopper screw.
Loosen fork link screw and place the foot link hinge screw to the right side of the foot adjusting arm. And then tighten
the link hinge screw.
Place needle bar at the lowest point by turning a hand pulley.
Raise presser bar and tighten the fork link turnbuckle to set the distance to allow 4mm between the bar holder and the
bar bushing
Adhere the location link stopper closely to the foot moving link hinge screw by tuning the stopper turnbuckle.
Tighten fork link screw and check to make sure that there is no extra space in vertical movement of the foot adjusting
arm. Adjust the foot stroke after checking the tightening condition of screws.
①
Carved
mark
Presser
bar
Presser bar holder
Presser foot
Upper shaft
21
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