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Post by orrum on Jul 6, 2016 11:01:55 GMT -5
I have a lil 4 inch saw with a half inch arbor. I got it used and put a table aND new blade on it. It's blue plastic. There are several versions with different names but all are made by the same company. I have been using it for 2 years snd it's bad to the bone and very easy to carry outside and clean plus fast to change blades between ultra thin for small turquoise slabbing by hand to aggressive tile blade for trim sawing. I was timing some hard agate yesterday snd the motor slowed down. I thought oops I hogged off too much for too long and overheated the motor. I cleaned it up and thought I hope it's ok tomoro when it cools off. Just went to the barn and fired it up this morning. The motor ran fast and stong so I tried a thick slab and half way thru the blade slowed snd stalled! I turned it off and back on. When I turned it back on it started in the wrong direction! It was going backward. Stopped it and tried again, still backward! It was also weak. So I hand spun it in the right direction and it went but was slow. Turned it off and it went backward again. So unplugged it and looked underneath and the wiring seems good with good connections. The motor has a oval metal barrel on it with wiring. Guses that's a capicitor?
Anyway what's going on here and what is the fix? I really like this lil saw!
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Post by johnjsgems on Jul 6, 2016 12:00:59 GMT -5
That was the non-technical way to diagnose a bad start winding. Spin backwards and see if it starts. If it has a start capacitor they generally mount in an enclosure held to motor casing with two screws. With motor unplugged remove cover and pop out capacitor. If blown you sometimes get a tarry discharge around a terminal or bulging casing or end popped off. If it looks good, short across terminals with screw driver and using an ohm meter at highest setting read across the terminals. It should read and fall back down. I'm betting bad start winding. What are motor specs? Is this a direct drive? If I remember they are similar to "Tiny Trim".
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Post by orrum on Jul 6, 2016 18:25:29 GMT -5
So I looked and can't find a motor. Can you send them somewhere to be fixed? It's a single speed.
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wampidytoo
has rocks in the head
Add 5016 to my post count.
Member since June 2013
Posts: 709
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Post by wampidytoo on Jul 6, 2016 22:46:01 GMT -5
Well, there is your problem. If you can not find the motor there is no hope for you finding the capacitor. Go out and buy a monkey wrench so you can remove it's nuts. Fry at a reasonable temperature then call me in the morning.
Jim
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Post by orrum on Jul 7, 2016 6:22:59 GMT -5
LOL Jim!!!
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Post by orrum on Jul 7, 2016 6:25:31 GMT -5
The saw is really just a motor with the blade attached. The rest of the saw is a small blue plastic housing. This thing is sooo simple.
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Post by johnjsgems on Jul 7, 2016 9:43:18 GMT -5
If someone put it together you should be able to take it apart. Look at bottom for screws holding a bottom panel on. Or buy a new saw from me.
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