r/SewingMachinePorn • u/Crafty-Implement-921 • 4h ago
Need help diagnosing this machine
Hello, I have an old Toyota z700, it runs but it rhythmically accelerates and decelerates if that makes any sense. The motor will spin a few revolutions at max speed but then it will slow down and speed up again .
I've tried cleaning the carbon disks on the foot pad and inspecting the motor, the motor has a blown filtering capacitor but nothing else I can see that's out of the ordinary. I'm kinda stumped, I've seen people saying that the grease can get old and turn sticky but the hand wheel has no sticky spots and turns smoothly, so I'm lost.