Singer 812U Instruction Manual page 5

~.
Belt and belt cover installation
Installing the belt Installing lhe belt caver
(1) Adjust the nut
fD
so that the belt
will give in about 10 mm when
depressed with finger.
(2) Operating direction
is
clockwise.
(1) Install the stud @) on the ma-
chine head.
(2) Install the belt cover 4D) on the
stud@).
IS.
Thread unwinder installation
. Five threads unwinder
[Q].
Eye guard installation
(l) Install the thread unwinder in the far right comer (l) Install the eye guard .on the face plate cover
4B .
of the table with screw, making sure that it will not
interfere with machine operation.
B. LUBRICATION
[IJ. Typeof oi!
Use the oil (viscosity 37.Soe SUS70) supplied as accessory,
[2). Lubrication and oi! change
1. Oil supply 2. Draining oil
All oil has been completely. discharged from the machine When draining the oil, remove screw.. as shown at above.
prior to shipment. Before operating machine, remove Change the oil after 100 hours of running
in.
oil cap. by tuming it counterclockwise, and pour oil After that períod, change the oil about every 3 months.
in
until oil level reaches the upper reference line, using
the accessory funnel.
- 4