Q: Should I fill the oil before starting the machine for the first time?

Yes, absolutely. It is imperative to fill the oil BEFORE starting the machine for the first time. This is a critical step to protect the internal mechanism. Correct initialization order Fill the oil: Use only JUKI MACHINE OIL #18 . Remove the fill cap and pour the oil until reaching the level indicators on the gauge. Tighten the cap. Check the level: Ensure that the oil level matches the indications on the gauge before any startup. Plug in the machine: Only after completing the filling, plug in the power cord. Turn on: You can now turn on the machine. Recommendations for the initial usage period During the first 4 weeks , use the machine at 80% of its maximum speed (about 5,600 stitches/min instead of 7,000). This 'break-in' period allows all mechanisms to adjust properly. Subsequent maintenance After these first 4 weeks, perform a complete oil change, then renew it every 4 months to maintain optimal lubrication.

Question 1

What are the initial power-on steps for the Juki MO6800S sewing machine after filling with oil?

Accepted Answer

After filling the oil reservoir and closing the sight glass ①, here are the steps to follow before the first power-on of your Juki MO6800S:

Essential Pre-checks

Motor and Belt - Check that all connectors and cables are not damaged. Check the tension of the motor belt: it should depress about 10 mm when you press it with your finger. Ensure that the motor would turn clockwise.
Safety Equipment - Ensure that the belt cover, eye protection, and needle cover are properly in place.

Additional Lubrication Before First Use

Before starting the machine, you need to lubricate the greased sections of the needle bar and the looper guide (identified in the lubrication diagram of your manual).

Starting and Break-in

During the first power-on, use the machine at 80% of its maximum speed for the first 4 weeks (about 5,600 stitches/minute instead of 7,000). This ensures optimal break-in of the machine.

After 4 weeks of operation at this reduced speed, perform a complete oil change before switching to maximum speed.

Once these checks and preparations are completed, your machine is ready for initial power-on.

Question 2

How to use the oil gauge of the Juki MO6800S sewing machine?

Accepted Answer

Yes, the Juki MO6800S has an oil gauge with visual markers.

The oil gauge has two marker lines (red lines) that indicate the correct level:

The upper marker line
The lower marker line

The oil surface level must always be maintained between these two marker lines. This is the only visual check needed to ensure that the amount of oil is correct.

Daily Check

Before each use, check that the oil reservoir is properly filled by observing the gauge. If the level is below the lower marker line, top up with JUKI MACHINE OIL #18 until it reaches the space between the two lines.

Once filled, tighten the oil level sight (the gauge cap).

Question 3

Is there a diagram showing the lubrication areas on the Juki MO6800S?

Accepted Answer

No, the Juki MO6800S manual does not contain a complete detailed diagram showing all the lubrication points with arrows. However, the maintenance manual clearly identifies the areas to be maintained and uses numbered visual markers (symbols and shaded sections) to locate them on the machine.

The three main areas to lubricate are:

Main oil reservoir (marker ❶): This is the oil inlet located on the side of the machine. Pour JUKI MACHINE OIL #18 until the level reaches the space between the two marker lines on the oil gauge. Do not overfill.
Needle bar (marker ❷, shaded sections): The shaded sections of the needle bar should be lubricated before the first use and after long periods of inactivity. Apply the specified machine oil to these areas.
Upper looper guide (marker ❸, shaded sections): Similarly, the shaded sections of the upper looper guide require lubrication. This ensures the proper functioning of the sewing loop system.
Needle (cooling lubrication): A specialized silicone oil should be applied to the needle for cooling, especially during high-speed sewing.

Recommended maintenance schedule: Check the oil level in the reservoir daily before each use. Perform a complete oil change every four months. The oil filter should be cleaned once a month and replaced if necessary. For the first use or after a long period of non-use, make sure to manually lubricate the shaded sections of the needle bar and the looper guide.

If the machine makes unusual noise, produces irregular stitches, or shows signs of wear, this may indicate insufficient lubrication of these key areas. Only use JUKI MACHINE OIL #18 (or equivalent) for the main reservoir, and silicone oil for the needle, as specified by the manufacturer, to ensure the longevity of your machine.

Question 4

Should I fill the oil before starting the machine for the first time?

Accepted Answer

Yes, absolutely. It is imperative to fill the oil BEFORE starting the machine for the first time. This is a critical step to protect the internal mechanism.

Correct initialization order

Fill the oil: Use only JUKI MACHINE OIL #18. Remove the fill cap and pour the oil until reaching the level indicators on the gauge. Tighten the cap.
Check the level: Ensure that the oil level matches the indications on the gauge before any startup.
Plug in the machine: Only after completing the filling, plug in the power cord.
Turn on: You can now turn on the machine.

Recommendations for the initial usage period

During the first 4 weeks, use the machine at 80% of its maximum speed (about 5,600 stitches/min instead of 7,000). This 'break-in' period allows all mechanisms to adjust properly.

Subsequent maintenance

After these first 4 weeks, perform a complete oil change, then renew it every 4 months to maintain optimal lubrication.

Question 5

How to fill the oil of the Juki MO6800S sewing machine?

Accepted Answer

To fill the oil of your Juki MO6800S, follow these essential steps:

Required oil type: Use only JUKI MACHINE OIL #18, specially formulated for ultra-fast machines.
Filling level: Fill the reservoir up to the visible mark on the oil gauge.
Regular maintenance: Check the oil level daily before each use. Do not let the reservoir run empty.
Complete oil change: Drain and replace the oil completely every 4 months of regular use.
Oil filter: Clean the oil filter monthly to maintain optimal circulation.

Proper lubrication is crucial for the lifespan of your MO6800S (maximum speed 7,000 stitches/min). A lack of oil can damage internal mechanisms and reduce the machine's performance.

Question 6

Where and how to buy spare parts for the JUKI LU1561N?

Accepted Answer

The manual for the JUKI LU1561N does not contain a complete catalog of spare parts, but it mentions the essential components to maintain: presser foot, needle position synchronizer, knee lifter, thread cutting device, and CP-180 control panel.

To order original parts:

Directly from JUKI - Visit the official JUKI website or contact your authorized JUKI distributor. You will need the serial number of your machine (visible on the nameplate) and the exact name of the part.
Specialized distributors - Suppliers of parts for industrial machines (including JUKI dealers) have directories of spare parts compatible with the LU-1500N and derivatives like the LU1561N.
Technical catalogs - Ask your supplier for a parts diagram (exploded view) to accurately identify each component.

Commonly ordered parts: needles (suitable for the machine's power), spools/bobbins for thread, presser foot springs, synchronization rings, and drive belts.

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