Bosch 4310 Operating/Safety Instructions Manual page 4

BM 2610012089 03-10 E:BM 2610012089 03-10 E 3/30/10 7:39 AM Page 4
• Do not use the saw until the table is clear of all
tools, wood scraps, etc., except the work-
piece. Small debris or loose pieces of wood or
other objects that contact the revolving blade can
be thrown with high speed at the operator.
• Do not feed workpiece into the blade or cut
"freehand" in any way. Workpiece must be
stationary and clamped or braced by your
hand. Saw must be fed through the workpiece
smoothly and at a rate which will not overload the
saw's motor.
• Cut only one workpiece at a time. Multiple
workpieces cannot be adequately clamped or
braced and may bind on the blade or shift during
cutting.
• Be certain the miter saw is mounted or placed
on a level, firm work surface before using. A
level and firm work surface reduces the risk of the
miter saw becoming unstable.
• plan your work. provide adequate support
accessories such as tables, saw horses, table
extension, etc. for workpieces wider or longer
than the table top (see page 22). Workpieces
longer or wider than the miter saw table can tip if
not securely supported. If the cutoff piece or work-
piece tips it can lift the lower guard or be thrown
by the spinning blade.
• Do not use another person as a substitute for
a table extension or as additional support. Un-
stable support for the workpiece can cause the
blade to bind or the workpiece to shift
during the cutting operation pulling you and the
helper into the spinning blade.
• The cutoff piece must not be jammed against
or pressured by any other means against the
spinning saw blade. If confined, i.e. using length
stops, it could get wedged against the blade and
thrown violently.
• Always use a clamp or a fixture designed to
properly support round material such as
dowel rods, or tubing. Rods have a tendency to
roll while being cut, causing the blade to "bite" and
pull the work with your hand into the blade.
• When cutting irregularly shaped work-pieces,
plan your work so it will not slip and pinch the
blade and be torn from your hand.
A piece of molding, for example, must lie flat or be
held by a fixture or jig that will not let it twist, rock
or slip while being cut.
• let the blade reach full speed before contact-
ing the workpiece. This will help avoid thrown
workpieces.
• If the workpiece or blade becomes jammed or
• Braking action of the saw causes the saw
• After finishing the cut, release the switch, hold
• There are additional safety instructions for
• for slide action cutting, first pUll saw head
• for chop action cutting, slide the head as-
• Do not allow familiarity gained from frequent
"SAVE THESE INSTRUCTIONS"
bogged down, turn miter saw "Off" by releas-
ing switch. Wait for all moving parts to stop
and unplug the miter saw, then work to free
the jammed material. Continued sawing with
jammed workpiece could cause loss of control or
damage to miter saw.
head to jerk downward. Be ready for this reac-
tion when making an incomplete cut or when re-
leasing the switch before the head is completely
in the down position.
the saw arm down and wait for blade to stop
before removing work or cutoff piece. If blade
does not stop within five (5) seconds, unplug
the saw and follow the instructions in the
Troubleshooting section. REACHING WITH
YOUR HAND UNDER A COASTING BLADE IS
DANGEROUS!
particular operations of the saw in the operat-
ing section. Read the rest of the man-ual for
safe operation.
assembly away from the fence, until blade
clears the workpiece or to its maximum exten-
sion if blade cannot clear the workpiece. Make
certain the clamp does not interfere with the
guard and head assembly.
Second, turn saw "ON" and lower the saw to
the table. Then pUSH saw through the work-
piece. Release the switch and wait for the
blade to completely stop before raising the
head assembly and removing the workpiece.
Never "pullcut" since blade may climb the work-
piece causing KICKBACK.
sembly to the rear as far as it will go and
tighten slide lock knob. Then turn the saw
"ON" and lower the head assembly to make
the cut. Release the switch and wait for the
blade to completely stop before raising the
head assembly and removing the workpiece.
Failure to tighten the slide lock knob can cause
the blade to suddenly climb up on the top of the
workpiece and force itself toward you.
use of your miter saw to become common-
place. Always remember that a careless fraction
of a second is sufficient to inflict severe injury.