Ryobi RTS21 Manuel D'utilisation page 36

To install a standard blade:
 Place the new blade on the arbor shaft (the teeth must
point down toward the front of the saw to work properly).
 Place the blade washer and the blade nut over the arbor
shaft. Be sure the flat side of the blade washer faces
the blade and that all items are snug against the arbor
housing. Make sure the blade nut is securely tightened.
Do not overtighten.
 Lock the release lever.
 Rotate the blade by hand to make sure it turns freely.
 Lower the saw blade and reinstall the throat plate.
 Check all clearances for free blade rotation.
NOTE: To replace the blade with an accessory blade, follow
the instructions provided with the accessory.
BLADE
ARBOR
SHAFT
THROAT
PLATE
ADJUSTMENTS
TO SET THE BLADE AT 0° AND 45°
See Figures 50 - 51.
The angle settings of the saw have been set at the factory
and, unless damaged in shipping, should not require setting
during assembly. After extensive use, they may need to be
checked.
 Unplug the saw.
 Raise the blade.
 Remove the blade guard assembly.
If the blade is not perfectly vertical (0°):
 Unlock the bevel locking lever.
 Loosen the 0° adjustment screw.
 Place a combination square beside the blade on the
right. The edge of the square and the saw blade should
be parallel.
NOTE: Make sure that the square contacts the flat part
of the saw blade, not the blade teeth.
BLADE
 Lock the bevel locking lever.
NUT
 Tighten the adjustment screw. Check again for
squareness and continue to adjust if needed.
BLADE
WASHER
0° ADJUSTMENT
SCREW
Fig. 48
RIVING
KNIFE
BLADE
Fig. 49
36 - English
BLADE
HANDLE
BEVEL
INDICATOR
COMBINATION
SQUARE
BEVEL
LOCKING
LEVER
Fig. 50