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model 12 contractor saw weak motor, please help

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Forum topic by Mattfinisher posted 02-27-2014 07:34 PM 1238 views 0 times favorited 15 replies Add to Favorites Watch
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Mattfinisher

71 posts in 1349 days


02-27-2014 07:34 PM

I currently inherited a saw exactly like this from my Grandfather after he passed, it runs but the motor bogs even when cutting pine. Is there a way to fix this inexpensively? Its wired to run off 110 at the moment. I believe you can wire it to run from 220. Will this help? Any help will be appreciated!

Thanks, Matt

-- “Anyone who doesn’t think money is grown on trees hasn’t bought any lumber lately.” www.facebook.com/johnsonandsons72


15 replies so far

View exelectrician's profile

exelectrician

2327 posts in 1892 days


#1 posted 02-27-2014 07:40 PM

Maybe a sharp blade would help, if the the one you have is suspect? Also check that the saw is not connected for 220Volts and you are putting 120Volts to the motor.

-- Love thy neighbour as thyself

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paxorion

1102 posts in 1510 days


#2 posted 02-27-2014 08:40 PM

Could it be a belt tension issue?

-- paxorion

View Andy Ponder's profile

Andy Ponder

232 posts in 1172 days


#3 posted 02-27-2014 09:44 PM

This is my first post, but thought I’d chime in on this one. I have had the twin to this saw for roughly twenty years. Wired for 110 it does good to saw balsa. Wired for 220, a good blade, and a link belt makes all the difference. I do like mine.

—Andy

-- AP--I thought growing old would take longer.

View mahdee's profile

mahdee

3553 posts in 1232 days


#4 posted 02-27-2014 09:49 PM

Also, avoid extension cords.

-- earthartandfoods.com

View madts's profile

madts

1682 posts in 1804 days


#5 posted 02-27-2014 11:25 PM

I have the same saw. 12” just great. I run mine off 220 volt with no problem. Put a link belt on it, check the voltage and put a new blade on it. This saw is bullet proof. Not the best fence but it works once you know it’s how it is meant to work.
.

-- Thor and Odin are still the greatest of Gods.

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knotscott

7214 posts in 2840 days


#6 posted 02-27-2014 11:45 PM

Usually a motor either runs properly or it doesn’t…it could be that there’s a problem with a run capacitor, belt tension, alignment, blade issue, or something else. Running it on 220v could improve the perceived power somewhat, but generally would only cure a big problem if your 110v circuit is woefully inadequate for that motor….what’s the amp draw on the motor plate?

-- Happiness is like wetting your pants...everyone can see it, but only you can feel the warmth....

View bigblockyeti's profile

bigblockyeti

3668 posts in 1185 days


#7 posted 02-27-2014 11:57 PM

The only time I’ve ever had with a motor running seemingly without the power that it should was when wired for 240V and only receiving 120V. Started a bit slower, but 99% of induction motors will still operate correctly, just without nearly the power they’re supposed to.

View woodchuckerNJ's profile

woodchuckerNJ

1154 posts in 1098 days


#8 posted 02-28-2014 12:09 AM

I’m with KnotScott on this one, check the run capacitor first. It might still be kicked in to the start and the run is dead.
Also take the belt off, spin the blade.. is it free spinning?
Is the blade a sharp carbide blade?
Is the belt slipping ? Get a link belt.

Good luck, looks to be in nice shape.

-- Jeff NJ

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oldiebutnewbie

39 posts in 2513 days


#9 posted 02-28-2014 03:31 PM

I agree with most. I have this saw with 220 and a 5 hp motor. Cut anything smoothly. I use it for hard woods only and the Rigid 10” for ripping.

-- 1tatonkajim

View distrbd's profile

distrbd

2227 posts in 1911 days


#10 posted 02-28-2014 04:22 PM

I remember someone having the same problem with the motor and it turned out to be bad or wrong wiring,the motor was wired for 220v but someone just changed the plug to a 110 ,but could not be likely in your case since the saw must have run fine for your grandfather.
I would listen to Knotscott and check the run capacitor, belt tension.

-- Ken from Ontario, Canada

View Mattfinisher's profile

Mattfinisher

71 posts in 1349 days


#11 posted 02-28-2014 06:58 PM

OMG, thanks everyone! I will do all of the above, I have an electrician buddy and will have him check it out! Thanks for all the help! Lumberjocks rules!

-- “Anyone who doesn’t think money is grown on trees hasn’t bought any lumber lately.” www.facebook.com/johnsonandsons72

View reggiek's profile

reggiek

2240 posts in 2734 days


#12 posted 02-28-2014 07:17 PM

Also, I would recommend that you use a thin kerf blade in the saw. They are specifically made for saws with less power. You also get the benefit of smaller waste when making multiple rip cuts on a board.

-- Woodworking.....My small slice of heaven!

View Mattfinisher's profile

Mattfinisher

71 posts in 1349 days


#13 posted 06-03-2014 02:22 AM

Got my buddy to wire it up correctly for 220, got a link belt and a good blade, and were all good! Its a beast that cuts like a warm knife through soft butter! Thanks for all the help! Jumberjocks rule!

-- “Anyone who doesn’t think money is grown on trees hasn’t bought any lumber lately.” www.facebook.com/johnsonandsons72

View TheFridge's profile

TheFridge

5765 posts in 950 days


#14 posted 06-03-2014 02:32 AM

If the motor has 2 bumps on it has a run and a start capacitor. Definitely check them first.

-- Shooting down the walls of heartache. Bang bang. I am. The warrior.

View knotscott's profile (online now)

knotscott

7214 posts in 2840 days


#15 posted 06-03-2014 09:28 AM

Thanks for the update….gotta love a happy ending!

-- Happiness is like wetting your pants...everyone can see it, but only you can feel the warmth....

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