12" miter saw alignment

[mccrorycj]

I have the rigid 12" compound miter saw. When locking the saw into the positive stop 0 degrees to cut a 90-degree angle the saw cuts a slight taper outward. At first, I just lived with it but the job I am doing now this taper will not work. I have tried to adjust this by moving the fence as described in the manual but the taper is still there. (The fence really does not have much of an adjustment if any) any ideas would be appreciated.

[jbergstrom]

I think your answer lies on page 18 of the manual for the MS1250LZ.

Adjust Blade Square to Fence:
1. Lower the blade and engage the lock
pin. Use a combination square. Place
the square against the fence and next
to the blade as illustrated. Locate the
square properly so it does not contact
the set in the teeth of sawblade, giving
an inaccurate reading. The sawblade
should contact the full length of the
square.
2. If blade contacts full length of square,
no alignment is necessary, skip a-f
below. If blade is not square to the
fence, follow the alignment procedure.
a. Loosen miter lock knob a half turn.
The saw power head should still be
secured in the lowered position by
the lock pin.
CAUTION: To keep from losing
control of the unit, steady the
base with one hand while loosening
the two bolts with the other
hand.
b. With the unit securely resting on a
large stable surface, tilt the unit by
lifting up on one side or the other of
the base. Using combination wrench
supplied, loosen the two miter arm
cap head screws on the underside of
the turn table.
c. Return the saw to its normal resting
position. Make sure the miter lock
knob is loose but do not release the
index spring.
d. Use the miter saw knob to move the
table so that the blade contacts the
full length of the square. Watch out
for tooth set. Turn the miter lock
knob clockwise to lock saw square to
fence.
e. Tilt saw as in Step b and tighten cap
head screws.
f. Recheck blade squareness to fence
and readjust if necessary.
Adjust Miter Scale Indicator
1. Through the hole in front of the table
insert, loosen the Phillips screw that
holds the Vernier indicator in place.
2. Reposition the indicator to align it with
0° mark, and retighten screw.

Hope that helps:)

[Roadrunner]

This could be related to an earlier post where we discovered that the whole carriage holding the saw may be a little askew. If the two rails, the rear bracket and the motor bracket don'd form a perfect rectangle, then the blade can be perfectly square to the fence, but will track left or right as the saw head is slid away from the fence. That is if this is a slider.

[bomurray]

you hit it on the head. have two sliders with this problem, fixed now!