Craftsman 315.212350 Operator's Manual page 18

 Unplug the saw.
 Loosen phillips screw on the blade bolt cover until
blade bolt cover can be raised.
 Gently raise the lower blade guard bracket, releasing
lower blade guard from notch so that lower blade
guard and blade bolt cover can be rotated up and back
to expose the blade bolt.
 Depress the spindle lock button and rotate the blade
bolt until the spindle locks.
 Using the blade wrench provided, loosen and remove
the blade bolt.
NOTE: The blade bolt has left hand threads. Turn blade
bolt clockwise to loosen.
 Remove the laser guide or outer blade washer. Do not
remove inner blade washer.
 Wipe a drop of oil onto inner blade washer and outer
blade washer where they contact the blade.
WARNING:
If inner blade washer has been
removed, replace it before placing blade on
spindle. Failure to do so could cause an accident
since blade will not tighten properly.
 Fit saw blade inside lower blade guard and onto
spindle. The blade teeth point downward at the front
of saw as shown in figure 16.
:
CAUTION
Always install the blade with the blade
teeth and the arrow printed on the side of the blade
pointing down at the front of the saw. The direction
of blade rotation is also stamped with an arrow on
the upper blade guard.
 Replace the laser guide or outer blade washer (see
instructions on the following page). The double "D"
flats align with the flats on the spindle.
 Depress spindle lock button and replace blade bolt.
NOTE: The blade bolt has left hand threads. Turn blade
bolt counterclockwise to tighten.
 Tighten blade bolt securely.
 Replace the lower blade guard and blade bolt cover.
 Retighten the phillips screw securing the blade bolt
cover.
:
CAUTION
Make sure the spindle lock button is not
engaged before reconnecting saw to power source.
Never engage spindle lock button when blade is
rotating.
ASSEMBLY
LOWER BLADE
GUARD BRACKET
BLADE
TO
LOOSEN
TO
TIGHTEN
BLADE
BOLT
OUTER BLADE WASHER
WITH DOUBLE "D" FLATS
18
PHILLIPS
SCREW
BLADE
BOLT COVER
PHILLIPS
SCREW
Fig. 16
LOWER
BLADE
GUARD
FLAT(S)
ON SPINDLE
INNER BLADE
WASHER WITH
DOUBLE "D" FLATS
Fig. 17
SPINDLE
LOCK
BUTTON
Fig. 18