table saw slow starting
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Elder User
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From: home
table saw slow starting
My old (1983) Sears 9 inch direct drive table saw is slow on starting. It does get up to speed. You have to flipp the switch on a couple of times. Is it the relay or the motor windings? A new motor is the same price as a new 10 inch saw. I like my old cast iron table. The engine rebuilders also want more than the cost of a new saw. Also not sure where the relay is as it is not in the book that came with the saw. Where I can get another motor for less than a $100.00 if the problem is not the relay? 
Hotshot
Joined: Oct 2002
Posts: 18,488
Likes: 22
From: The Big, Oregon
I don't know about a relay, but usually those motors have an electrolytic capacitor on the side of them. This is used for extra juice on startup, and yours may be dried out. If you can't find a replacement, new motors can usually be found in the Harbor Freight catalogs for pretty cheap. The one in the saw should be a 3/4hp 56 frame motor, pretty standard fare.
Elder User
Joined: Aug 2001
Posts: 942
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From: South Texas
Not sure about your motor, but I have worked on a couple of pump motors that had the "relay" on the rear end of the motor shaft. Actually, it was a centrifical (sp) weighted contact set that opened/closed depending on the shaft speed. Try removing the rear cover and look it over. May just need lubircating and cleaning if so equipped.
Dialtone
Dialtone
Posting Guru
Joined: Jul 2003
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From: Lenexa, KS
Since you got a lot of years out of the original one, you might try WW Grainger as they might carry a higher quality motor. Like you, my Craftsman saw is one of the heavy duty cast iron table models and I would rather repair it than trade it in for a new model. Check the motor housing for the data plate and it should give you the specs for a replacement motor.
Elder User
Joined: Jul 2004
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From: Long island NY
I work at a electric motor repair shop, and 3 things can cause slow starting.
Bad start capacitor
Dirty switch contacts
dried up sleeve bearings( its a craftsman, so it will most likely have sleeve bearings, they are ALOT cheaper than ball bearings)
So, to rejuvinate your saw motor, take the motor off the saw, take the rear endbell off, blow all the saw dust out of the motor.. then use a dremel to clean the contacts on the start switch, re oil the bearings and give it a shot. If its still not starting right then replace the capacitor.
Bad start capacitor
Dirty switch contacts
dried up sleeve bearings( its a craftsman, so it will most likely have sleeve bearings, they are ALOT cheaper than ball bearings)
So, to rejuvinate your saw motor, take the motor off the saw, take the rear endbell off, blow all the saw dust out of the motor.. then use a dremel to clean the contacts on the start switch, re oil the bearings and give it a shot. If its still not starting right then replace the capacitor.
Posting Guru
Joined: Sep 2002
Posts: 2,420
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From: Langhorne, PA
I can't confirm or deny what the other posters said...don't use a long extension cord, keep the saw as close to the outlet as you can, and use a heavy duty electrical extension cord, the thicker the gauge wires, the better.
Elder User
Joined: Nov 2002
Posts: 543
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From: South East Texas
I don't know about any other neck of the woods, but here Grainger only sells wholesale to other businesses.
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Senior User
Joined: Jun 2005
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Whats' the motor's AMP rating? I had a 10" Rockwell rated at 15 AMPs and the saw often tripped the circuit breaker and was slow at start-up. A long extension cord will drag the power down. Custom make one. Their easy.
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Elder User
Joined: Aug 2000
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From: home
table saw
Thanks for all the help everyone. The saw seems to be running ok now. Maybe its because I cleaned it with the air compessor the last time before it starting running slow. I have done it before & not had it run or start slow. I will also run a shorter extension cord to it. I had been running a 25 ft rated for 13 amps. The saw is listed at 10 amps. 
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