![]() If found, loosen or remove the drive belts to localize the noise. Run the machine ( without a blade!) and listen for any excessive vibration. They can also be expensive to replace or repair. Make sure the proper electrical controls are there and working. Be sure all the accessories ( motor cover, dust door, extension wings etc) are with it, as they can be expensive to replace. Make sure it cranks up and down and tilts easily. The alignment of the blade to the table is not important if it is off a little, it can easily be adjusted. Look at the inside left rear trunnion support ( a weak spot) to check for breakage. Check the angle and elevation gear rack and worm gears for excessive wear. Some light rust is ok, but it should be able to be removed easily. Look underneath and check for rust on the gear racks ant other moving parts. Check the fence and make sure it slides easily and is true. Make sure that the motors turn at 3450 RPM, not the older 1725 RPM. There are also some units that were built for a time using the one and one-half and two horsepower motors. What you should look for is a newer saw (the last 20 years or so counts as newer for unisaws), one that has a three horsepower, single phase motor.
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