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Pfaff 1212 The machine is sluggish, has no pep. The motor's brushes are fine. Is this a rheostat defect? Some other defect? Thanks.

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SOURCE: Pfaff 2170 Query

my pfaff 2170 machines shows "Cannot make Directory" pls help me in this

Posted on Jun 27, 2008

SOURCE: drive belt required for pfaff

try these sites for parts

Posted on Dec 16, 2010

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Runs backward

I have not heard of that problem before. Small alternating current brush-type motors usually seem incapable of running in any direction other than the one they are designed to run. I am not sure if changing the relationship between the field coils and the armature will change the situation - mostly the design of the internal wiring would defeat efforts to change this.

If the speed control is electronic instead of the usual rheostat then it is possible the alternating current is being changed into a direct current by the speed control and in this case reversing the supply wires from the speed control to the motor should have the desired effect.

May 30, 2016 | Sewing Machines

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My Bernina 801 sport will not sew. When I step on the foot pedal, nothing happens. Sometimes it will sew for a few seconds and then stop. I cleaned it out but still will not sew

There can be a few problems that match your inquiry. Pleas check the machine in the following logical order:
  1. The power cable can be defective....With the machine plugged in and un-threaded, step on the foot control to check for a motor run condition and at the same time wiggle the cables at the motor plug connection. If the machine runs/stops/runs and stops, it is likely that the cables and or plug are damaged. Replace the cable. If the cable is found to be good, go to step 2.
  2. Check the motor run condition by changing foot controls. If the machine runs without a run/stop problem, the original foot control will have to be rebuilt. If the foot control is found to be good, go to step 3. Step 3 is for a qualified technician level of competency only.
  3. Remove the power cable, back cover, motor belt, motor housing. Remove the closing plate on the back of the motor housing to inspect the motor brushes. If the carbon brushes have worn out, you will probably find some damage to the commutator bars due to the brush springs having arc-worn the commutator. Generally, this type of damage can be repaired with excellent results. Most of the time however, motor brushes are installed by a sewing machine repair person, but no effort is made to repair the damage by resurfacing the commutator to a precision cylindrical diameter. This being the case, new motor brushes will have a very short life and further damage to the motor is likely.. Amateur attempts are sometimes made by applying some sort of tool or sandpaper to the commutator while the motor is running in an attempt to resurface, but concentricity and cylindricity cannot be achieved in such a manner....If the motor brushes are good go to step 4.
  4. Examine the commutator bars on the motor armature carefully for any burned spots on the borders of the copper commutator bar insulators. If such burn spots are evident, the armature will have two or more dead spots. At this point, the motor should be replaced.

Jul 21, 2015 | Bernina Sewing Machines

1 Answer

My Necchi 537fa is sewing sluggish. Motor spins but needle moves slow. What do I do to fix this?

If your Necchi has an external motor, take the belt off and run it.... is the motor sluggish? If so... that's where you start. motors need to be oiled, typically with oil and grease ports on either end of the motor housing.

If the motor spins up nicely,... you need to clean and oil the rest of the machine. Start underneath if the bottom workings are exposed, oil all the places where metal joins metal. Then do the bobbin and feed dog area... then look along the top and sides for oil parts.. give them a drop or two...Finally, see if you can get into the head where the take up lever and such are... oil the needle bar, presser foot bar, etc.

It's a dirty job... so prepare a good space for your machine. Liquid Wrench will help you free up gunked up and rusty parts. Fine grade steel wool (0000) and Cotton swabs help.

Good luck

Oct 10, 2012 | Necchi 3537 Mechanical Sewing Machine

1 Answer


it would be a good idea to have a sewing machine technican
check the machine to see why it sluggish

Jun 06, 2012 | Singer Sewing Machines

1 Answer

Hello! I need to replace the motor on a Kenmore Series 16 machine. Model 158.162. The Sears website states the motor 5168, is not available anymore and no substitute is recommended by the manufacturer. ...

I realy dont think that you will find a new motor for a old kenmore, you may be able to find one on craigslist/ebay. How do you know it is the motor? Could just need new brushes or a new foot control. I have never had a bad motor on a old kenmore. replaced brushes and many foot cotrols.
Not that it could not happen but it would be rare.
hope this helps

Mar 25, 2011 | Kenmore Sewing Machines

1 Answer

My Singer 221 had a sluggish motor. I lubricated it with genuine Singer motor lub. Both are very old. It gets little use. I brought it to a quilt club meeting to get it going. Sluggish went to a complete...

Do not put anything on the motor at all, it may be the motor brushes need replacing if you can get them, ebay is best, check also the wires underneath the motor if you have the black 221 they are prone to perishing.

Apr 21, 2010 | Sewing Machines

1 Answer

I have a white model 8-19428 when i plug it in the machine starts running full blast without ever touching the foot pedal

Unplug the foot pedal to see if it still runs fast. If so, there is probably an interior defect related to motor control that will need to be serviced. If everything is quiet when the pedal is removed, then the foot control to the speed rheostat is loose or broken. Hope this helps!

Feb 20, 2010 | Sewing Machines

1 Answer

The foot control is not working

well particular on electrical problem foot control is a switch of motor that deliver speed varies on how you press the foot pedal it consist of circular thick plate carbon the old model and the new one electronically control of power ic,It depend on how this pedal was contro.Anyway besure the power is off or unplug the machine; this control was been connected in series connection to the motor which you can test if your foot pedal control is defective. Disconnect the line wire holding foot pedal from the terminal inside motor assembly.If your not qualified electrician don.t do this.Connect the two terminal wire that inside the machine where the motor mounted.This connection is supplying your motor in full speed,Declucth your machine from the handwheel so that the motor run only.Plug the machine and switcn but you must jug only if the motor run in couple second of course without the foot control this was disconnected already.So your foot control is defective vice versa if motor does not run without foot control motor is busted.
how to fix if foot contol is defective, in carbon type you must replcace the circular thick carbon.On Electronic control check the IC if this open or some capacitor and resistor are open,Replaced any pars that had been short circuited.If the motor is defective replaced the carbon brush mounted at two side of motor case,There is an opening port.The carbon brush has spring holding push this carbon brush to the brush armature of rotor.

Mar 06, 2009 | Kenmore Sewing Machines

1 Answer

Motor is sluggish, Necchi Model#4795

Set machine to wind the bobbin to check for how fast the machine will run. I believe it will run fast or slow according to how hard you depress the foot control. If it runs fast and slow you have a problem in the machine. Most likely the machine, if turned by hand, is hard to turn and it needs to be professionally serviced. before it is ruined.

Dec 29, 2008 | Sewing Machines

2 Answers

Sewng machine motor housing


Remove the big plastic cover piece on the bottom of the machine with the single screw in the center.

Remove the machine's end panel by removing the single silver screw from underneath the bottom middle of the side panel. Pull the bottom of the side panel out and down to remove it. It comes off easily.

Remove the two screws under the motor assembly (silver screws with black washers).

Swivel the motor assembly enough to remove the belt.
There is a another plastic panel on the motor assembly over the motor itself. Remove the two phillips head screws to remove this panel.

At this point you can see the commutator and inspect the "business" ends of the brushes. (In our case, one brush was almost gone and there was nothing left of the second brush except the spring!)

You can then slide the motor out of the housing. I pushed on the motor pulley and pulled on the other end of the motor with pliers. The motor comes out rather easily, but be careful not to disturb the wires any more than necessary.

With the motor exposed, unscrew the caps over the brushes and remove the brushes.

Our motor's commutator looks significantly worn and the motor may need to be replaced. If you find a source for the brushes or a replacment motor, please let me know! Thanks, John

Jan 27, 2008 | Bernina Activa 130

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