Ryobi TS1143L Operator's Manual page 19

 Using the blade wrench, loosen the socket head screws
that secure the miter fence to the miter table.
 Rotate the miter fence left or right until the saw blade is
parallel with the square.
 Retighten the screws securely and recheck the blade-to-
fence alignment.
Your saw has several scale indicators. After squaring
adjustments have been made, it may be necessary to loosen
the indicator screws and reset them to zero. See figures 20
and 21.
SOCKET HEAD
SCREW(S)
MITER
FENCE
ASSEMBLY
BEVEL
SCALE
SCALE
INDICATOR
Fig. 19
19 - English
INDICATOR
SCREW
SCALE
INDICATOR
Fig. 20
INDICATOR
SCREW
MITER
SCALE
Fig. 21