Lubrication - Brother T-8421C Instruction Manual

3. INSTALLATION

3-3. Lubrication

Do not connect the power cord until lubrication has been completed, otherwise the machine may operate if the
treadle is depressed by mistake, which could result in injury.
Be sure to wear protective goggles and gloves when handling the lubricating oil and grease, so that they do not get
into your eyes or onto your skin, otherwise inflammation can result.
Furthermore, do not drink the oil or eat the grease under any circumstances, as they can cause vomiting and
diarrhea.
Keep the oil out of the reach of children.
When cutting the nozzle of the oil tank, hold the base of the nozzle securely.
If you hold the end of the nozzle, injury from the scissors may result.
9
CAUTION
The sewing machine should always be lubricated and the
oil supply replenished before it is used for the first time,
and also after long periods of non-use.
Use only the lubricating oil <NIPPON OIL CORPORATION
Sewing Lube 10N; VG10> specified by Brother.
* If this type of lubricating oil is difficult to obtain, the recommended
oil to use is <Exxon Mobil Essotex SM10; VG10>.
1. Hold the base of the nozzle of the accessory oil tank (1),
and use scissors to cut about half-way along the straight
section (A) of the nozzle.
2. Loosen and remove the nozzle, and then remove the seal (2).
2354B
3. Tighten the nozzle.
<Lubricating via the oil cover>
1. Tilt back the machine head.
2. Remove the rubber cap (1).
3. Use the accessory oil tank (2) to pour lubricating oil into
the oil cover (3) until the oil level reaches the reference
line (4).
NOTE:
Do not fill with lubricating oil past the reference line (4).
If you pour in too much lubricating oil, it may spill out
when the machine head is tilted back.
4. Replace the rubber cap (1).
5. Return the machine head to its original position.
If the lubricating oil level drops below the bottom (6) of the
*
oil gauge window (5), be sure to add more oil.
2355B
<Lubricating via the oil tank>
1. Remove the rubber cap (1).
2. Use the accessory oil tank (2) to pour in lubricating oil until
the oil level reaches the top reference line (4) of the oil
gauge window (3).
3. Replace the rubber cap (1).
* If the lubricating oil level drops below the bottom reference
line (5), be sure to add more oil.
2356B
T-8421C, 8422C, 8452C, 8722C, 8752C