Ryobi P552 Operator's Manual page 15

 Using the hex end of the blade wrench, loosen and
remove the blade bolt.
NOTE: The blade bolt has left hand threads. Turn blade
bolt clockwise to loosen.
 Remove 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 12.
 Replace outer blade washer. The double "D" flats on blade
washers align with flats on spindle.
 Depress and hold spindle lock button and replace blade
bolt.
NOTE: The blade bolt has left hand threads. Turn blade bolt
counterclockwise to tighten.
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.
 Tighten blade bolt securely.
 Replace blade bolt cover and tighten blade bolt cover
screw securely.
 Lower the blade guard.
 Raise and lower the saw arm to ensure lower blade guard
functions correctly.
ASSEMBLY
OUTER
BLADE
WASHER
BLADE
BOLT
BLADE
BOLT COVER
LOWER
BLADE
GUARD
INNER BLADE
WASHER WITH
DOUBLE "D" FLATS
BLADE
TO
LOOSEN
TIGHTEN
BLADE
BOLT
15 – English
BLADE
INNER
BLADE
WASHER
ARBOR
NOTE: BEFORE USE,
REPLACE SCREW AND
TIGHTEN SECURELY
TO PREVENT GUARD
MOVEMENT
TO
OUTER BLADE
WASHER WITH
DOUBLE "D" FLATS
BLADE BOLT
COVER
SCREW
FLAT(S)
ON SPINDLE
Fig. 12