Ryobi P551 Operator's Manual page 15

TO INSTALL/REPLACE THE bLAdE
See Figures 11 - 12.
WARNING:
A 7-1/4 in. blade is the maximum blade capacity of the
saw. Never use a blade that is too thick to allow outer
blade washer to engage with the flats on the spindle.
Larger blades will come in contact with the blade guards,
while thicker blades will prevent the blade bolt from se-
curing the blade on the spindle. Either of these situations
could result in a serious accident and can cause serious
personal injury.
 Remove the battery pack from the tool.
 Raise the saw arm.
 Rotate lower blade guard up and remove blade bolt cover
screw. Rotate blade bolt cover up and back to expose
the blade bolt.
 Depress the spindle lock button and rotate the blade bolt
until the spindle locks.
 Using the wrench provided, 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. Double "D" flats on blade
washers align with flats on spindle.
 Depress 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 the lower blade guard and blade bolt cover.
 Replace blade bolt cover screw and tighten securely.
ASSEMbLy
inner bLade
washer with
doubLe "d" fLats
bLade
to
Loosen
tighten
bLade
boLt
15
note: before use,
repLace screw and
tighten secureLY
to prevent guard
MoveMent
bLade
boLt
cover
Lower
bLade
guard
to
outer bLade
washer with
doubLe "d" fLats
spindLe Lock
button
Fig. 11
bLade boLt
cover
screw
fLat(s)
on spindLe
Fig. 12