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Adjustment Procedures Results of Improper Adjustment
1) Loosen setscrews 1 and adjust so that throat plate support 2
should not come in single-sided contact but come in uniform
contact with throat plate 3 using setscrews 1.
1) Loosen setscrew 1 and press feed mechanism cover presser
2 in the direction of arrow.
2) Press feed mechanism cover 3 and tighten setscrew 1 so
that the feed mechanism cover should not rise.
(Caution) Check that feed mechanism cover 3 is pressed so
that it should not rise.
™ If the throat plate support comes
in single sided contact with the
throat plate or does not come in
contact with it, the throat plate
will vibrate severely.
™ If the feed mechanism cover is
not fully pressed and the cover
rises, oil leakage will be caused.
1) Close looper cover 2, loosen setscrew 3, and move looper
cover guide plate 4 back and forth until the looper cover is
brought to a position where the cover smoothly closes.
2) Move looper cover guide plate 4 until it slightly comes in contact
with looper cover receiving bracket 5. Now, fix the guide plate
by tightening setscrew 3.
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