1
Lubrication (1)
Fill the oil reservoir with oil up to “H” line.
Oil level should be periodically checked. If oil level
is found below “L” line replenish oil to “H” line.
For oil, use “MC70M” specified by Mitsubishi.
※ Refer
MC70M ：Specific gravity (15℃ ) = 0.86 (g/cm
3
)
：Viscosity (40℃ ) = 10.9 (mm
2
/s)
Knee lifter pin
Drain oil screw
Ⓗ
Ⓛ
2
Lubrication (2)
When a new sewing machine is used for the
first time, or sewing machine left out of use for
considerably longtime is used again, remove the
rubber plug and replenish a suitable amount of oil
as shown in the figure.
Rubber plug
3
Lubrication condition
Check that the oil splashed the oil sight window.
Oil sight window
4
Adjustment of lubrication to the
rotating hook
Adjust the lubrication amount of the rotating hook
by turning the screw Ⓐ.
ScrewⒶ
Decrease
Increase
5
Adjustment of the oil pump
For the regular sewing, it is not necessary for
the adjustment of the oil pump, but in case of low
speed operation, if the oil splash amount for the
oil sight window on the machine arm is reduced,
close the oil bypass hole of the oil pump.
Adjusting plate
Bypass hole
Standard gap
0.5 to 1.0
USAGE PRECAUTION
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