Craftsman model 708100 table saw tilt lock won't stay locked
I've got a craftsman model 708100 table saw. The blade won't stay square to the table surface. In other words, the tilt-lock doesn't lock. After only 1 cut, the blade angle has changed by a degree or 2. Is this the best I can hope for from this cheap saw?
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Unplug saw, crank the blade up two inches or more, loosen the locking lever or bolt, hold a square aganist the flat part of the blade between the teeth. Set blade square to the table and lock in place. Recheck, plug in saw away.
The blade is able to be set to different angles by the handle under the front edge of the table. There is a lock handle to keep the angle set correctly. Loosen the lock handle, press a square (90 degree tool) against the flat of the blade - not the teeth - then lock the blade in place.
I couldn't find that model Sears saw to confirm, but if yours is like mine (113.298720), then the handle on the right causes the saw trunion to swivel left and right. And there is a locking hex-head bolt on the front of the saw up close to the underside of the table. This bolt locks the trunion in place keeping it from swivelling.
Take a look at the following diagram
part 22 is the shaft that tilts the blade
Part 30 is the bolt that locks it in place
part 29 is the handle
part 28 is the spring that holds the handle on the locking bolt
I can't tell you what the value is but I can share a tip I use whenever buying a used saw.
With the saw in the 90 degree position (Straight up) run a board all the way through the board. Then flip one half of the board upside down and place the two cuts together. If the blade is true the two halves should line up perfectly. If they don't that means the blade is out of square. While re squaring a saw is fairly easy, I would wonder why the blade was off and how often that would happen and therefore would likely not buy the saw.
Of a side note, Craftsman does make a great saw and they are fairly easy to work on and find parts for.
Inside the saw, on the end of the trunnion is a stop that is adjustable to zero the saw in to exactly 90 degrees. Either there is sawdust or something accumulated there or it needs to be adjusted. You say you cleaned it out, So you'll need to unplug it an have a look up in there. See how there's a geared piece of steel that moves when you crank the saw over to 45 degrees. Usually there's a bolt or stud with a locking nut on it, either on the trunnion itself or the lower surface of the table top. You need to break the nut loose and screw the bolt in or out to adjust, then crank the saw over to hit it, check for square with a known square, crank it all the way out of the way and readjust, etc. Until you get it right. Make sure to tighten that lock nut when you're done.
I hope this information allows you to resolve this issue. If you need further assistance, please post back with a comment to this thread. If I've managed to answer your question or solve a problem, please take a moment to kindly rate this post....thanks!
This model does not have a knob on the side. There is only a locking lever on the front next to a single rotating wheel for height adjustments. To tilt the blade simply twist the locking lever to the left and push the height adjustment wheel to the right. It can be a bit stiff at times to move.
blades are available for different applications. A few common blades include:Steel Blades are inexpensive and work well for cutting softwood. Steel blades dull quickly in hardwood. High-Speed Steel Blades are harder than steel blades and stay sharp longer. Carbide-Tipped Blades are more expensive than other blades, but they stay sharp much longer than steel or high-speed steel.