S Adjustment Of Meshing Pressure Between The Movable Knife And The Fixed Knife; T Sharpening Of The Fixed Knife - Mitsubishi Electric LT2-2250-B1T Instruction Manual

Double-needle lockstitch needle-feed corner stitching automatic undertrimmer industrial sewing machine
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HOW TO USE
S Adjustment of meshing pressure between the movable knife and the
fixed knife
( 1 ) Loosen the fixed knife bracket clamp bolt Ⓐ.
( 2 ) Adjust meshing pressure by turning the up and down adjusting screw Ⓑ, and tighten the bolt Ⓐ.
Note: Since overpressure causes a large torque on the thread trimmer mechanism and trimming
failure, adjust so that the thread can be trimmed with the minimum pressure.
( 3 ) Move the movable knife and check that the thread can be sharply trimmed.
Fixed knife bracket
Bolt Ⓐ
Screw Ⓑ

T Sharpening of the fixed knife

If the fixed knife is dull, it should be sharpened as shown in the figure.
Since it is very difficult to sharpen the movable knife, replace it with a new one when it dulls.
Oil stone
Fixed knife
60°
— 21 —

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