Updated at: 21-04-2022 - By: Sienna Lewis

One of the most difficult aspects of sewing machine repairs is removing the covers to access the machine’s guts. Because they don’t want you to play with the internals, user manuals don’t show you how to do it, but maintenance manuals don’t either, because they assume that you already know how to do it!


  • Smaller screws will not fall off the table if you place a blanket or towel on top of it.
  • Put your screws in a Ziplock bag and attach them to the plates once you’ve removed all of the cover plates.
  • Use tuna to distract your employee from the job area.

Step 1: Removing the Top Cover

There are no screws on this cover. To remove the other covers, you’ll need to remove this one first. They are arranged in a particular way.

  1. Turn the spool holder so that it is in the sewing position.
  2. With one hand on each end, remove the top cover and insert it between your fingers and thumbs.
  3. In order to remove the cover, simply turn it to the back.
  4. To free the thread, just lift the thread holders straight up.

Inside the upper cover’s inner lining.

  • The winder for bobbins has a “doughnut” rubber wheel.
  • One of the thread guides is held in place by a screw.

Through the top cover, you can reach various parts of the cover.

  • The screws that hold the front cover to the motherboard.
  • The zig-zag stitch is made by moving needles with the help of cam wheels.
  • Stitching can be done with a push of a button and a set of cam wheels.
  • both the drive shaft and the upper stitching mechanism’s mechanics

Step 2: Removing the Front Cover

To replace the bulb, you must remove this cover. In order to keep it in place, it is attached to two pegs with set screws.

Straight screwdriver with short blades and a very long shaft is required.

  1. As previously stated, the top cover must be removed.
  2. Two holes can be found to the right of the needle.
  3. After injecting the screwdriver, tinker around with the screw set until the screwdriver blade is inserted.
  4. Remember the “Righty-tighty, Lefty-loosey” rule…… as if staring directly at the screw’s head The set screw can be loosened by turning the screwdriver counterclockwise to the left. CAUTION Neither tighten nor loosen the screw. You’ve screwed things up too far if it spills out the bottom.
  5. It’s possible that the screws are loose. Pull the front plate away from the machine if the screws are loose.

On the front cover

  • Nothing

Parts of the front cover can be accessed via the front cover

  • To put it another way, the light bulb
  • The tension of a few threads can be adjusted.
  • The threader’s height can be adjusted by using the needle.
  • adjusting the mechanism that elevates the presser’s foot
  • Up and down movement is made possible by the driving shafts.

Step 3: Removing the Motor Cover

The drive belt, motor, and power inputs can all be adjusted by removing this cover.

In order to be put to use Screwdriver with a straight medium-blade

  1. As previously stated, the top cover must be removed.
  2. Remove the plate cover by unscrewing the screw in the center.
  3. Once you have cleared the handwheel, remove the lower portion of the cover.

When the motor covers are attached, the following is the wiring diagram.

  • Nothing

The motor cover provides access to many parts.

  • Chain tension and drive chain tension
  • Ignition system
  • The wheel of the hand conceals a secret.
  • The power supply box is held in place by screws in the frame.

Step 4: Removing the Bottom Covers

To install the light switch push button, you’ll need to remove these covers. Doing so will damage your power source, lower stitch mechanism, and bobbin holders.

In order to be put to use Medium-bladed straight screwdriver

  1. As previously mentioned, remove the top cover and the motor cover.
  2. To remove all of the five (5) screws, you must remove the four largest screws, as well as a smaller one hiding in the hole. Note I use a machine that does not require me to use my arms. The bottom of a typical machine may be vary from machine to machine.
  3. Remove the free screw at the arm’s midsection.

Attached to one another are the coverings. as seen from above:

  • Nothing

From the bottom of the cover, you can reach the following components:

  • Connecting to a power source Some of these series have an electrical wire that isn’t linked to the box that powers them. I hope you had a good time. Avoid removing the screw from the box’s top when removing your power supply. Things are about to come to a crashing halt. Once you remove the two screws that hold on to the cover plate for the motor, you can then reinstall it back into the device’s base. After taking a few images of the cables and putting them in a color-coded labeling system, remove the power supply from the box. Putting it back in the right place took me a long time because I didn’t do this when I opened the box.
  • For the light switch’s push-button.
  • Feed the movers’ canine friends.
  • The bobbin and the hook are the primary means of transportation.

Step 5: Putting It Back Together

To assemble the covers, follow these steps, starting with the screws you taped and bagged for each one.

  1. The sleeve for the arm that is not attached to the
  2. It is the base that is covered by the cover
  3. It’s the motor’s lid.
  4. Make sure to tighten the set screws on the front cover.
  5. Make sure that your thread holder is back in place
  6. Make sure the top cover is snapped off.

How Do I Change The Lightbulb In My Pfaff Sewing Machine?

  1. Replace the lightbulb on your Pfaff model according to the instructions provided in the owner’s manual.
  2. Make sure the wattage of the replacement bulb is compatible with your Pfaff sewing machine before purchasing it.
  3. Remove the foot control plug and the lead cable from the sewing machine after it has been turned off.
  4. To get to the light bulb near the needle threader in the machine, the accessory tray must be removed.
  5. Ensure the bulb cover is pushed all the way to the upward position.
  6. The bulb should be flipped the other way around. Using a half-turn, you may remove it.
  7. Make use of the lamp changer to install the new bulb.
  8. To secure the pins, insert the bulb into the diagonal holder and spin to lock.
  9. To reinstall the bulb, first push it as high as you can, then turn it clockwise for half a rotation, and then do the opposite of what you did to remove it.
  10. Remove the bulb changer while you hold the bulb.

How Do You Maintain A Pfaff Sewing Machine?

  1. You can remove the bulb changer while you keep the bulb in your hand.
  2. After every project or eight hours of labor, clean the machine.
  3. If your machine has a screen, wipe down the screen and the outside with a clean, wet cloth.
  4. After lowering the feed dogs, shut down the machine.
  5. Remove the bobbin cover and the presser foot clip.
  6. By releasing the screw, you can remove the stitch plate.
  7. Ensure that the feed dogs are free of debris and dust before using them.
  8. Dust and lint should be removed from the area under the bobbin case.
  9. Clean the bobbin case as well as the holder of the bobbin case after you have removed them
  10. After removing the bobbin case and the bobbin case holder, thoroughly clean them.
  11. After removing the bobbin case and the bobbin case holder, thoroughly clean both.
  12. An annual cleaning and tune-up at an authorized Pfaff service provider is highly recommended.


That’s all there is to it! Remove the covers from the screws to get a fast overview of how to open the Pfaff sewing machine. To make reassembling them easier, place them in plastic bags. The front, top, and bottom covers should all be thoroughly checked to make sure that nothing falls or is lost.

We sincerely hope you’ve learned a lot. If you have any questions, please leave a comment below.