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3. Oiling
The mechanisms inside the frame such as the needle bar, presser
lift and spreader components are lubricated with grease. Never add
oil inside the frame.
(Caution) If inside of the frame is oiled, the grease will be expelled,
resulting in mechanical failure.
4. Replacing the lubricating oil
In case of the new sewing machine, replace the lubricating oil (JUKI
MACHINE OIL 18) with new one after using it for approximately one
month. Then replace the lubricating oil every six months.
(1)
Set a container to receive the lubricating oil under drain screw
.
(2)
Remove drain screw
. The lubrication oil is drained.
(3)
After the drain, wipe out the oil and attach the drain screw
.
Adjustment Procedure
Results of Improper Adjustment
Summary of Contents for MF-7800D Series
Page 64: ...60 5 Adjusting the upper knife stroke A B Standard Adjustment H21...
Page 66: ...62 MEMO...
Page 80: ...76 3 Adjusting the elastic band presser plate 0 5mm Standard Adjustment E10 A A Approx 7 5 mm...
Page 84: ...80 MEMO...
Page 94: ...90 3 Setting of SC 510 2 Change of the setting Type B Type A Standard Adjustment UT25...
Page 114: ...110 MEMO...
Page 118: ...114 2 Installing SC 510 1 Wiring SC 510 Standard Adjustment UT22...
Page 124: ...120 MEMO...
Page 134: ...130 MEMO...
Page 142: ...138 7 Feed timing of the roller A Standard Adjustment PL11 C D B...
