It sounds as though you are in over your head, and it's time to get a
qualified, experienced person to take over the job.

A residential air system blower motor should work about the same with a
properly rated AC capacitor of 7.5uF or 10uF value (for a motor that's
marked for either a 7.5uF or a 10uF), with only a small difference in motor
speed.
These motors are typically PSC permanent split capacitor type motors, and
may be reversible, but may be designed to operate more efficiently/cooler in
one direction.

The motor you referred to is not a cheap motor, it's just not an exessively
inflated priced motor.
New surplus blower motors can be found at numerous surplus dealers for about
$30 or less, plus shipping.

--
Cheers,
WB
..............


"Deodiaus" wrote in message
...
Talking to a friend who is an electrician, he told me that maybe just
the capacitor might be of the wrong capacitance.
The problem with buying one off the shelf is that its tolerance might
be off enough to throw the engine off.
Does anyone know how to calculate the torque for an engine with a
capacitance?
I use to know this 30 years ago, but now, don't even know how to
google this question properly!!
Using a 7.5 MFD cap did not work. I tried a 10 MFD cap, which worked
for 10 mins.
BTW, I found a cheap motor at
https://www.plumbersstock.com/produc...rtNumber=12476
Does anyone have experience with this brand,
PARTNERS CHOICE ??