Bosch 1657 Operating/Safety Instructions Manual Download

Page: 10 / 40

SWITCH

When starting the tool,
hold it with both hands.

The torque from the motor can cause the tool
to twist.

To turn tool “ON”, squeeze the trigger switch.
To turn the tool “OFF”, release the trigger
switch, which is spring loaded and will return
to the off position automatically.

Your saw should be running at full speed
BEFORE starting the cut, and turned off only
AFTER completing the cut. To increase
switch life, do not turn switch on and off while
cutting.

GENERAL CUTS

Always hold the saw handle with one hand
and the auxiliary handle or housing with the
other.

Always be sure either
hand does not interfere

with the free movement of the lower
guard.

Maintain a firm grip and operate the switch
with a decisive action. Never force the saw.
Use light and continuous pressure.

After completing a cut and
the trigger has been

released, be aware of the necessary time it
takes for the blade to come to a complete
stop during coast down. Do not allow the
saw to brush against your leg or side,
since the lower guard is retractable, it
could catch on your clothing and expose
the blade. Be aware of the necessary blade
exposures that exist in both the upper and
lower guard areas.

When cutting is interrupted, to resume
cutting: squeeze the trigger and allow the
blade to reach full speed, re-enter the cut
slowly and resume cutting.

When cutting across the grain, the fibers of
the wood have a tendency to tear and lift.
Advancing the saw slowly minimizes this
effect. For a finished cut, a cross cut blade or
miter blade is recommended.

CUTTING MASONRY/METAL

This tool is not recommended for continuous
and general usage with metal or masonry cut-
off wheels. If you use your saw for cutting
these materials, use the appropriate wheel for
the material being cut.

When cutting masonry, do not cut a depth of
more than 1/4 inch (6 mm). Make successive

passes to achieve desired depth. Apply a
light forward pressure. Do not overload
motor. Disconnect plug from power source
and clean dust from air vents frequently.
Metal cutting is done at full depth.

Clean guards frequently to
assure a rapid return of

lower guard. The lower guard may become
sluggish when cutting masonry materials.

Abrasive Cut Off Wheels
must have a maximum

safe operating speed greater than the “no
load RPM” marked on the tool’s
nameplate. Wheels running over the rated
speed can fly apart and cause injury.

Do not use the abrasive
cut off wheel near

flammable materials. Sparks from the
wheel could ignite these materials.

This machine is not
intended to be used with

Wet Diamond Wheels. Using water or other
liquid coolants with this machine may result
in electrocution or shock. Use of Dry
Diamond Wheels is acceptable.

POCKET CUTS

Disconnect the plug from the power source
before making adjustments. Set depth adjust-
ment according to material to be cut. Tilt saw
forward with cutting guide notch lined up with
the line you’ve drawn. Raise the lower guard,
using lift lever or retracting handle and hold the
saw by the front and rear handles (Fig. 9).

With the blade just clearing the material to be
cut, start the motor. Gradually lower the back
end of saw using the front end of the foot as
the hinge point.

As blade starts cutting the
material, release the lower

guard immediately. When the foot rests flat on
the surface being cut, proceed cutting in
forward direction to end of cut.

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