JUKI MF-7800D Series, Engineer'S Manual

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(17) With regard to lubrication
1. Replacing the oil filter
Normal lubrication cannot be performed if dust
collects in oil filter .
Inspect it every 6 months.
Standard Adjustment
2. Oil circulation identification window
Make sure that lubricating oil rises to oil circulation
identification window during operation.
<When using the sewing machine for the first time>
Lubricating oil has been taken out at the time of
delivery. Be sure to supply lubricating oil before
using the sewing machine for the first time.
●
Oil used : JUKI MACHINE OIL 18
(Caution) Do not use oil addition agent since
deterioration of lubricating oil or
machine trouble will be caused.
Remove oil hole cap and fill the oil reservoir
with lubricating oil up to the level between the upper
and lower engraved marker lines of oil gauge .
<Checking before using the sewing machine>
1) Check oil gauge and make sure that lubricating
oil level is between the upper and lower two lines.
When lubricating oil level lowers below the lower
line, supply lubricating oil.
2) Make sure that lubricating oil comes out from the
nozzle of oil circulation identification window
when rotating the sewing machine. When
lubricating oil does not come out, perform
"Inspecting and replacing the oil filter ".
Lubrication