Ryobi BS904 Manual Del Operador página 10

MOUNTING THE SAW TABLE
See Figures 6 - 7, pages 18 - 19.
 Remove the D-nut, washers, and wing screw on the saw
table.
 Standing at the front of the band saw, slide the saw table
past the blade and through the slot moving from the right
side of the saw table to the left.
 Holding the saw table with your left hand while pulling the
angle adjustment knob away from the saw frame, align
the teeth on the saw table bracket into the teeth on the
angle adjustment knob. Release the knob.
 Fit the pins on the frame into the slots of the saw table
bracket.
 Insert the washer on the threaded end of the table lock
lever. Tighten the saw table to the saw frame by turning
the table lock lever clockwise.
 Attach the D-nut, washers, and wing screw to the saw table.
NOTE: The wing screw goes below the saw table.
SQUARING THE SAW TABLE TO THE BLADE
See Figures 8 - 9, page 19.
 Turn the lock knob counterclockwise to unlock the blade
guide assembly. Turning the blade guide adjustment knob
clockwise, raise the blade guide assembly as far as it will
go. Turn the lock knob clockwise to retighten.
 Place a small combination square on the saw table beside
the blade.
 Loosen the table lock lever and rotate the angle
adjustment knob to tilt the saw table up or down to align
table 90° to blade (0° position). Retighten the table lock
lever.
 Using an adjustable wrench, loosen the jam nut.
 Turn the adjusting bolt until the bolt just touches the saw
housing.
 Check squareness of the saw table to the blade. Make
readjustments if necessary.
 Once squareness is confirmed, retighten the jam nut.
 Set scale indicator to zero and tighten screw with a
phillips screwdriver.
NOTE: Always make a test cut to insure the squareness of
the blade prior to beginning any new project. If not square,
it may be necessary to loosen the screws under the saw
table to make the adjustment (miter slot must be parallel to
the saw blade). Once square, retighten screws.
ASSEMBLY
ADJUSTING BLADE TENSION
See Figures 10 - 11, pages 19 - 20.
 Remove the switch key.
 Before using the band saw, turn the blade tension knob
on the top of the saw clockwise to engage tension.
NOTE: Adjustments of blade tension can be made at
anytime.
 Pluck the back straight edge of the saw blade like a guitar
string while turning the tension knob.
Sound becomes higher pitched as tension increases. Never
increase blade tension so tight as to completely compress
the spring. When completely compressed, the spring can
no longer act as a shock absorber.
Too much tension may cause the blade to break. Thicker
workpieces require higher tension; maximum tension is not
needed for all cuts. Too little tension may cause the blade
to slip on the wheels.
TRACKING THE BLADE
See Figure 11, page 20.
Adjust blade tension properly before making tracking
adjustments. Check that blade guides do not interfer with
the blade. Blade gullet (the deepest part of the blade tooth)
should be in the center of the tire.
To adjust:
 Open front covers by releasing the upper and lower
latches. Watch the blade's position on the upper tire as,
by hand, you slowly turn the upper wheel clockwise. If
the blade moves away from the center of the tire, the
tracking must be adjusted.
If the blade has moved left or right of center:
 Turn the blade tracking knob (clockwise if blade has
moved left; counterclockwise if blade has moved right)
while turning the wheel by hand until the blade moves
back and rides in the center of the tire.
 Check the position of the blade on the lower tire. The
blade should be completely on the tire (gullet of the blade
teeth in the center). If not, adjust the tracking until the
blade is on both tires.
 Rotate the upper wheel by hand in a clockwise direction
for a few more turns. Make sure the blade stays in the
same location on the tires. Readjust, if necessary, until
blade is tracking properly.
 Close front covers and relatch.
 Turn on saw.
 Verify saw blade is centered on the tire (through the
tracking view window). If not centered, repeat above
steps.
10 — English