Porter-Cable 617 - Page 11

Clamp work on a rigid support such as a bench or saw horses. See
Fig. 8. Mark the line of cut on the work. Be sure cut-off line is beyond
end of support to the right, only enough to allow proper operation of
the telescoping guard. Place front edge of saw squarely on work before
starting motor. Sight the cutting line with the cut-line indicator (A), Fig.
8. Back saw up slightly and start motor. Move saw forward keeping the
edge of cut-line indicator parallel to line of cut.
WARNING: GUARD AGAINST KICKBACK. Kickback occurs
when the blade is pinched and the saw is driven back towards
the operator. Keep body to side of blade. Stay alert and maintain
firm grip on saw for control. Release switch immediately if blade
binds or saw stalls. Keep blades sharp. Support panels as shown
in Fig. 10. Use fence or straight edge guide when ripping. DO
NOT force tool. DO NOT remove saw from work during a cut
while blade is moving.
CAUTION: Keep the cord away from the cutting area, so it does
not get hung up in the work being cut.
Do not force the cut. Let the saw do the cutting at the rate of speed
permitted by the type of cut and the material being cut. When the cut
is completed, release the switch and allow the blade to stop before lifting
the saw from the work. Be sure the lower blade guard is closed, before
setting the saw down.
CROSS-CUTTING
Cutting directly across the grain of a piece of lumber is called crosscutting.
Fig. 8 illustrates a crosscut operation. Position the work so that the cut
will be on the right, as shown.
RIPPING
Cutting wood lengthwise, with the grain, is known as ripping. For narrow
rip cuts, a handy accessory, number 53124 Rip Guide, can be used.
Insert the rip guide bar (A), Fig. 9, under the bridge on the front of the
saw base. Thread the rip guide screws with springs (B) into the top
of the bridge. Adjust guide for desired width of cut, taking into consideration
the blade thickness so the work will not be cut too wide or too narrow.