Porter-Cable 7313 - Manual (Page 8)

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AUTO-TRACK SYSTEM
Your sander features the automatic belt control
system which keeps the belt running in the
center of the pulleys after initial adjustment.
The system has been preset at the factory but
may require adjustment when belts are
changed or an older belt stretches.
ADJUSTING THE AUTO-TRACK SYSTEM
1. Plug in the cord with the tool OFF.
2. Hold handle of sander with one hand and tilt
back until belt is off work and the sander is
resting on the bottom heel of the housing.
3. Turn tool ON by pressing the trigger.
4. For best performance the belt should be in
line with the outer edge of the rear pulley. If the
belt deviates more than 1/8 inch
from the outside of the sander, adjust the belt
position by turning the auto-track adjustment
screw, (Fig. 4) until the belt returns to the
proper position.
FIG. 4
1/8"
MAXIMUM
AUTO-TRACK
ADJUSTMENT
SCREW
SELECTING THE SANDING BELT
It is very important that you select the proper
belt for each particular application. To do this
you should understand the method of marking
or coding on the back of most belts. “CLOSED
COAT” means the surface is densely covered
with as much grit as the adhesive will hold.
“OPEN COAT” means the grit has been
applied evenly, but openly to the surface. An
“open coat” will not clog or fill as readily as
“closed coat”. In general, aluminum oxide
abrasive belts are best for woodworking
because they are tougher and last longer.
Sanding belts should be stored in a cool, dry
place. Do not store near heat or near a window
where the sun can reach them.
2 Belts per package
3" x 18" BELTS AVAILABLE FROM SKIL
TYPE OF MATERIAL REMARKS GRIT SIZE
Coarse Medium Fine Very Fine
WOOD FINISHING:
New or unfinished
wood, plastics, resins.
NON-FERROUS
METALS: Such as lead,
copper, solder and
aluminum. This is a “closed
coat” belt and has a
white colored
backing for
identification. The
abrasive used is
aluminum oxide.
PAINT REMOVING:
For removing varnish,
lacquer and paint,
also for resinous or
green wood. Similar to above
belts but “open
coat”. Aluminum
oxide grits
are wider apart.
36
Grit
No.
73105
36
Grit
No.
73110
60
Grit
No.
73106
80
Grit
No.
73107
100 Grit
No.
73108
120 Grit
No.
73109
60
Grit
No.
73111
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