13. TROUBLESHOOTING

Problem

 

Cause

 

 

 

 

Remedy

 

 

Page

 

 

 

 

 

 

 

Upper thread is not cut.

Knife is blunt.

 

 

Replace with a new knife.

 

63

 

 

 

 

 

 

 

 

 

 

Knife does not move to the full

 

 

 

 

 

 

 

 

stroke because air pressure is

Adjust the air pressure.

 

63

 

too weak.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Upper thread trimmer knife is

Install the upper thread trimmer

 

 

knife so that it cuts only one side

66

 

not picking up the upper thread.

of the upper thread loop.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Movable knife is not picking up

Refer to the remedies given

 

 

the needle thread because the

under

“Skipped

stitches

occur”

80

 

last stitch is being skipped.

 

in this troubleshooting chart.

 

 

 

 

 

 

 

 

 

Movable

knife

position

is

Adjust the position of the

66, 67

 

incorrect.

 

 

 

movable

knife

or

the

loop

 

 

 

 

spreader.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Lower thread is not cut.

Knife is blunt.

 

 

Replace with a new knife.

 

63

 

 

 

 

 

 

 

 

 

 

Knife does not move to the full

 

 

 

 

 

 

 

 

stroke because air pressure is

Adjust the air pressure.

 

63

 

too weak.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Movable

knife

position

is

Adjust the position of the

 

 

movable

knife

or

the

loop

66, 67

 

incorrect.

 

 

 

spreader.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Thread slips out of the

Thread nipper spring force is too

Adjust

the

force

of

the

thread

66, 67

needle at the sewing start.

weak.

 

 

 

nipper spring.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Upper thread length is too short

Install the upper thread trimmer

 

 

knife so that it cuts only one side

66

 

after trimming.

 

 

of the upper thread loop.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Needle and looper adjustment is

Adjust the needle bar height or

55

 

incorrect.

 

 

 

the looper and spreader height.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Not enough upper thread

is

Adjust

the amount

of

upper

57

 

being fed out.

 

 

thread being fed out.

 

 

 

 

 

 

 

 

 

 

 

 

 

Material is not being cut

Cutting pressure is too weak.

 

Adjust the cutting pressure so

63

cleanly.

 

 

 

 

that it is strong enough.

 

 

 

Knife and hammer are not

Grind the hammer surface.

62

 

contacting properly.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Knife is blunt.

 

 

Replace with a new knife.

 

63

 

 

 

 

 

 

 

 

 

 

 

 

81

RH-981A

Page 87 Page 89
Page 88
Image 88
Brother rh-918a manual Problem Cause Remedy Upper thread is not cut, Lower thread is not cut, Thread slips out, Cleanly
Page 87 Page 89

rh-918a specifications

The Brother RH-918A is a versatile and innovative machine tailored for both personal and professional use. As a robust electronic sewing machine, it combines functionality and user-friendly features that cater to a wide range of sewing enthusiasts, from beginners to advanced users.

One of the standout features of the Brother RH-918A is its extensive stitch selection. With over 100 built-in stitches, including decorative stitches, utility stitches, and heirloom stitches, users have ample options to choose from, allowing for creativity and customization in every project. The machine also incorporates an easy-to-use stitch selector dial, making it simple for sewists to navigate and find the perfect stitch for their needs.

Another key characteristic of the RH-918A is its automatic needle threader. This time-saving feature allows users to thread the needle effortlessly, reducing eye strain and frustration, especially for those who may struggle with manual threading. Additionally, the top-loading bobbin system facilitates quick bobbin changes and ensures smooth feeding, enhancing overall sewing efficiency.

The machine is equipped with a powerful motor that provides consistent and strong stitches, able to handle various fabric types, from lightweight cotton to heavier materials like denim and canvas. This capability is critical for crafting garments, home décor items, and more intricate projects.

The Brother RH-918A also boasts several convenient features to enhance the user experience. An LED light illuminates the sewing area, making it easier to work on detailed projects, particularly in low-light environments. Furthermore, the machine includes multiple presser feet, such as a zipper foot, buttonhole foot, and walking foot, to expand its functionality and accommodate different sewing techniques.

For enhanced stability, the Brother RH-918A comes with a sturdy metal frame, ensuring durability and precision. Its intuitive interface, comfortable handwheel, and adjustable stitch length and width settings add to the overall ease of use, making sewing enjoyable for everyone.

In summary, the Brother RH-918A combines a wide range of stitches, user-friendly technologies, and robust build quality, making it an excellent choice in the world of sewing machines. Whether for basic repairs or elaborate creations, this machine stands out for its performance and reliability, appealing to a diverse audience of sewing enthusiasts.
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