A 3/4 HP motor is pretty small to be trying to cut dados with and it most
likely has a temperature cutout switch imbedded in the windings to shut it
off if it runs too hot. Clean out the motor with compressed air. Then make
several shallower cuts with your dado blade. A 6 inch dado blade will work
better than an 8 or 10 inch blade on an under powered saw as it will require
less power. These older under-powered saws will do the job but you have to
be much more patient with them. I suffered with one for years, but made a
lot of good projects with it.

You might also be better off cutting your dados with a router, at least
until you can afford a better table saw.

Charley


"alex" wrote in message
ps.com...
Hi,

maybe someone could suggest what is going on with my TS lately. I have
an older Beaver contractors table saw. which has a 3/4 110 v motor and
a magnetic switch.

When I use the saw with a standard rip or combination blade it runs
fine. But, if I use a dado blade after a while the motor shuts off. If
I try to start it right away it won't start. If I wait a minute it
will start and then shut down immediately. If I wait a few minutes it
starts up again and then runs fine for a while and then the whole
process repeats itself.

Is the motor overheating? I'm not doing a lot of cutting with it.

Thanks

Alex