Charnwood W619PSF Owner's Manual page 13

The two bolts holding the riving knife can
now be loosened using a 13mm spanner.
Raise the riving knife and crown guard
assembly, so that the crown guard is
situated just above the top of the saw blade.
If necessary adjust the riving knife so that
there is an even gap of around 5mm
between the curved leading edge of the
knife and the radius of the saw blade.
Adjust the crown guard so that it is parallel
to the table.
Re-tighten the two bolts. Replace the table
insert and screws.
The saw can now be used to cut at full
capacity.