Pfaff 3806-12/22, Руководство по настройке

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Adjustment
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13
.06
Adjusting the top knife (chain cutter)
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.06.01
Agjusting the diagonal position of the knife quide
Requirement
Adjust the inclined position of knife guide 1 to the throat plate and feed dog. .
Switch off the machine!
Turn off the compresses air!
Risk of injury due to accidental machine start-up!
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On subclase -12/22 take out screw 2 and removw chain trapper 3 with spring 4.
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On subclass -12/23 screw 2 is at the rear side of chain trapper 3.
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Loosen screws 5 a little.
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Turn the balance wheel until the feed dog 7 is at its highest point.
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Push knife 6 downwards as far as it will go and make sure that it canmove freely in the
needle plate.
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Align the knife guide 1 to the throat plate edge on the right so that the distance is 0.2 mm.
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On subclass -12/22 set the top knife 6 guide lug as to the knife 6 as possible (about 0.2
mm ) without actually touching it.
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On subclass -12/23 adjust the top knife 6 , so that its front edge is fl ush with the front
edge of the stationary knife 8 .
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Tighten screws 5 .
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Top knife 6 must still move freely in the needle plate cutout.
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Turn the balance wheel. Top knife 6 must not touch any of the feed parts when in its bot-
tom position.
Fig. 13 - 36
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