Hi!

So for a project I'm doing i took this motor of a lawnmower that has been sitting out in the open trough several winters.

After doing basic cleaning and checking for water and shit in critical places it seemed good to go and so it was.

Only problem, as soon as the power is applied (or it gets up to rev's) it starts to vibrate or even pulsate unhealthy.

Also, it seems to get rather hot even after 10..15 minutes of runtime.

Is that a problem and what might be the possible cause and fix if so. Bearings seemed to be solid, power consumption is acceptable 1.5A, wirings are dry and show consistent resistance and basic ohm test indicates usable capacitors.

Still, from experience with other motors, when activated with plain spindle, they seem to be near silent - similar to how this motor rotates right as i cut power.

Few things that i could imagine - misshaped plastic fan and threaded axle mount throwing things out of balance, deteriorated (but not dead) cap causing erratic running, sub-par assembly and component precision causing some scraping or eccentric rotation.