Sounds like a worn out bearing.
Instead of the shaft turning concentric with the outer bearing, it roles around in the worn bearing like the wheel of a stunt car going around a loop-de-loop --except the relative sizes are closer so it makes a lot of racket.
That Elu is a cool saw concept. They came out in the 1960's before commodity Miter saws hit the market so big. I've used one before.
I suspect the bearings can be pressed out and replaced. Take the saw to a motor repair shop and you might get them replaced for $15 a bearing. There's one bearing at each end of the motor.
Is it spinning the blade at all? If it is then it is unlikely to be an electrical fault. Have you considered a motor bearing fault? If the motor bearings are worn, it could turn freely by hand, but when powered up it would stutter and stall. The motor is basically a big electro-magnet so if the armature has enough lateral movement, when it is magnetized it could rub against the stator.
If the machine is buzzing, but not spinning the blade it is more than likely going to be caused by a faulty capacitor as this is the component that gives the motor the initial 'kick' in the right direction to get it spinning.
SOURCE: bosh 4000 table saw , using dado blades.
no good solution for that problem. dado blades vibrate and cause the knob to turn. possibly a clamp on the knob to keep it in place.
tom
SOURCE: 12 inch miter saw blade turns slowly and doesn't
There's no debris or wood jammed in the housing around the blade, is there? Try unplugging and removing the blade, to make sure some wood hasn't gotten wedged in there somewhere.
Otherwise, make sure the blade is on tight. If so, there is likely a problem with the motor itself.
If it's still under warranty, I'd contact Ridgid at this link: http://www.ridgid.com/Tools/Support/
Otherwise, they have a tools forum where you might be more likely to find someone who's experienced a similar problem.
Being reconditioned, it sounds suspect to me...
Sorry I couldn't be any more helpful...
SOURCE: My Skil Saw 10 will not start now.
depends wether the saw is belt driven or gear. just because you cant hear the motor doesnt mean its not running.
SOURCE: Skil saw motor runs but blade won't spin
The key could be sheared in the final drive shaft as well.
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i fixed my elu 173 flip over saw,the fan intake sucked in loads of dust over the years - i took the belt cover off.removed the belt.unbolted the pulley bolt,removed the 4 flat screws from the fan casing.then taped the bolt with a hammer and block of wood.cleaned the dust with a tooth brush and hoovered the rest out.spray carb cleaner and keep hand rotating until it frees.then grease the bearings.put it all back together.works great.
heres some pics
only took 90 mins or so.i must clean it more regular now.good luck.
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