Whirlpool Dryer makes humming sound

Dryer Repair
,
1

I have a gas dryer that when the start button is pressed, it will start sometimes and sometimes it will make a humming sound. If I spin the drum a little by hand (not very easy to do) and then press the start button, it will work.

I have also removed the drum, belt, and Idler arm, so that the motor has no resistance and it exhibits the same behavior. If I take and turn the motor shaft while pressing the start button it will come on.

Any ideas? Thanks

2

The motor needs replacing.
OR
The centrifugal switches on the motor are jammed up with lint.
OR
The centrifugal activating assembly is broken, also requires motor replacement.