Brother LK3-B448E Adjusting the needle up stop position, Adjusting the thread wiper

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10. Adjustment

10-12. Adjusting the needle up stop position

 

 

The needle up stop position is adjusted so that the index

 

 

mark w on the machine pulley q is inside the mark r

 

 

on the belt cover e.

 

 

If adjustment is necessary, loosen the screw t at the “U”

 

 

mark of the machine pulley q and adjust the position of

 

 

the machine pulley q. The machine pulley q stops later

e

 

if it is turned clockwise, and it stops earlier if it is turned

 

 

counterclockwise.

r

 

NOTE:

 

 

The screw y at the “D” mark is an adjusting screw for the

 

q

needle down detection function and is adjusted to match the

 

 

feed timing, so it should not be loosened.

 

 

The screw u is a screw for detecting the machine stop posi-

w

t

tion, and should not be loosened.

u

* If the index mark w is not inside the mark r when the

y

sewing machine is started, error code [E-50] will be dis-

 

 

 

 

played. Turn the machine pulley to move the index mark

 

 

w to the correct position and then start the sewing

 

 

machine.

10-13. Adjusting the thread wiper

we

 

r

 

q

2± 0.5mm

t

 

(Approx. Approx.

30mm) 20mm

1.Loosen the set screw w and move the wiper arm support e up or down to adjust so that the clearance between the top of the thread wiper and the needle point q is 2 ± 0.5 mm when the thread wiper is aligned with the center of the needle.

*Before carrying out this adjustment, check that the needle bar is lowered 3.5 to 4 mm from the needle up stop position when the sewing machine stops.

2.Loosen the screw r and move the thread guide connecting plate t up or down so that the thread wiper is approximately 20 mm from the needle when it is at the standby position.

44

LK3-B448E MARKII/BA-16

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Contents LK3-B448E Indications SymbolsEnvironmental requirements Lightning may cause problems with correct operationIii SewingLK3-B448E MARKII/BA-16 Contents Changing functions using the DIP switches Name of each part Name of each partNeedle SpecificationsSpecifications SpecificationsProgram list Specifications Program No Optional parts Installation Power tableInstallation Installing the motor pulley Installing the motorInstalling the control box Installing the cushions Installing the oil panInstalling the head rest Installing the machine headInstalling the liquid cooling tank, optional Installing the vibrating bowlInstalling the control box for vibrating bowl Installing the shooter Installing the button feederP11 Connecting the cordsControl box for vibrating bowl connection Installation Button feeder connectionInstalling the button feeder cover Installation Power switch connectionPower switch connector control box Connecting the ground wire Installing the operation panelInstalling the V-belt Installing the foot switch Installing the belt coverInstalling the spool stand Installing the eye guard Installing the motor coverAdjustment by the accessory spring Lubrication Lubrication pointsLubrication Draining the oil Applying greaseOperation Name and function of each operation panel itemOperation S E TY-SCALE Setting the sewing speed Operating procedureSetting the program number Setting the X-scale and Y-scaleOperating the vibrating bowl Operating the button feederChecking the sewing pattern When checking by operating only the feed mechanismTo ensure safety during use Checking the sewing patternThreading the upper thread Installing the needleCorrect use Selecting the needle and threadWinding the lower thread Replacing the bobbin case and threading the thread Thread tension reference guideLower thread tension Upper thread tension Thread take-up amount Adjusting arm thread guide RSewing SewingBefore starting sewing Maintenance and inspection Maintenance and inspectionCleaning the rotary hook Cleaning the control box air inlet portCleaning the eye guard Wipe the eye guard clean with a soft clothChecking the needle Adjustments AdjustmentsTileing back the machine head Adjusting the needle bar lift amount Adjusting the needle bar heightAdjusting the driver needle guard Adjusting the needle clearanceAdjusting the shuttle race thread guide Adjusting the movable knife Adjusting the thread take-up amountAdjustments Replacing the movable knife and fixed knife Adjusting the button clamp lift amount Adjusting the holding pressure Adjusting the position of the button holderAdjustment Adjusting the button clamp height Adjusting the thread wiper Adjusting the needle up stop positionIf buttons are not fed properly, check the following Adjusting the vibrating bowlAdjustment for excess buttons in the button shooter Button clamp adjustment Button replacementAdjustment Adjustment when the button thickness changes Adjusting the button carrier plateIf button hole arrangements differ Adjustment Adjusting the feeder position adjustment Vertical feed position Adjustment Adjusting the needle locationHorizontal feed position Button hole gapReplacement the V-belt Sewing machine Belt P1 P2 P3 P4 Checking the input sensor and DIP switch inputChecking the input voltage Moving stitch patterns Using the counters Using the countersUsing the bobbin thread counter Using the production counterP1 P2 Using user programsUsing user programs Recording a user programClearing the user programs Using user programs Using a user programRecording a cycle sewing program Using the cycle sewing functionUsing the cycle sewing function Press the P1 switch oClearing a cycle sewing program Using the cycle sewing function Using a cycle sewing programChanging functions using the DIP switches Changing functions using the DIP switchesOperation panel DIP switches Setting the presser modeDIP switches inside the control box P1 P2 P3 P4 Clearing all memory settingsChanging special functions using the memory switches Memory switches 00 0FMemory switches 30 4F Memory switches 20 2FTable of error codes Table of error codesErrors generated when optional equipment is connected Segment LED alphabetPanel display Text display LK3-B448E MARKII/BA-16 Troubleshooting Troubleshooting40,46 Hole of the button Needle drops into15-1, Naeshiro-cho, Mizuho-ku, Nagoya 467-8561, Japan. Phone

LK3-B448E specifications

The Brother LK3-B448E is a versatile and innovative sewing machine designed to meet the needs of both home sewers and professionals alike. This comprehensive machine is especially advantageous for users who want to experiment with intricate designs and achieve high-quality results with ease.

At the core of the LK3-B448E lies its advanced computerized technology, which facilitates a seamless sewing experience. The machine features a user-friendly interface, making it accessible for not just experienced sewists but also beginners. The LCD display provides clear visibility of settings, stitch patterns, and design options, ensuring that users have full control over their projects.

One of the standout features of the LK3-B448E is its extensive library of built-in stitch patterns. With over 100 different stitches to choose from, including decorative, utility, and quilting stitches, users can easily customize their sewing to suit any project. In addition to the built-in stitches, this machine supports the use of embroidery patterns and designs, expanding creative possibilities significantly.

The LK3-B448E also incorporates advanced sewing technologies, such as automatic needle threading and a drop-in bobbin system. These features simplify the setup process, allowing users to spend more time sewing and less time managing technicalities. Furthermore, the machine offers adjustable stitch length and width, enabling personalized settings that cater to various fabric types and sewing tasks.

Another remarkable characteristic of the LK3-B448E is its adjustable presser foot pressure. This allows for better control, whether working with delicate fabrics or thicker materials. The machine’s speed controls help manage sewing speed, providing additional comfort for users as they tackle intricate patterns or detailed designs.

The LK3-B448E also supports USB connectivity, enabling users to transfer new designs and updates effortlessly. This feature ensures that the machine remains relevant with cutting-edge patterns and functionalities, extending its lifespan and usability.

In conclusion, the Brother LK3-B448E combines user-friendly design with advanced technology, offering a comprehensive sewing experience. Its extensive features, coupled with customizable settings, make it an ideal choice for both novice and experienced users looking to enhance their sewing projects. With the LK3-B448E, creating beautiful garments and intricate designs is a straightforward and enjoyable process.
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