Bosch 1661 - Manual (Page 10)

-10-
Assembly
ATTACHING THE BLADE
Disconnect battery pack
from tool or place the
switch in the locked or off position before
making any assembly, adjustments or
changing accessories. Such preventive
safety measures reduce the risk of starting
the tool accidentally.
1. Turn BLADE STUD with wrench provided
clockwise and remove BLADE STUD and
OUTER WASHER (Fig. 2). If the shaft moves
while attempting to loosen the blade stud press
the lock button (Fig. 1).
2. Retract the lower guard all the way up into
the upper guard. While retracting the lower
guard, check operation and condition of the
LOWER GUARD SPRING.
3. Make sure the saw teeth and arrow on the
blade point in the same direction as the arrow
on the lower guard.
4. Slide blade through slot in the foot and
mount it against the INNER WASHER on the
shaft. Be sure the large diameter of the OUTER
washer lays flush against the blade.
5. Reinstall OUTER WASHER and tighten
BLADE STUD finger tight. The face of outer
washer has marks on it that will help you
properly adjust the blade stud. Press lock
button to lock shaft and TIGHTEN BLADE
STUD COUNTER-CLOCKWISE ONE MARK
ON BLADE WASHER WITH THE WRENCH
PROVIDED.
Do not use wrenches with longer handles,
since it may lead to over tightening of the blade
stud.
VARI-TORQUE CLUTCH
This clutching action is provided by the friction
of the OUTER WASHER against the BLADE
and permits the blade shaft to turn when the
blade encounters excessive resistance. When
the BLADE STUD is properly tightened (as
described in No. 5 of Attaching The Blade), the
blade will slip when it encounters excessive
resistance, thus reducing saw’s tendency to
KICKBACK.
One setting may not be sufficient for cutting all
materials. If excessive blade slippage occurs,
tighten the blade stud a fraction of a turn more
(less than 1/8 turn). OVERTIGHTENING THE
BLADE STUD NULLIFIES THE EFFECTIVE-
NESS OF THE CLUTCH.
DUST EXTRACTION
Your tool is equipped is with a dust port for dust
and chip extraction. To use this feature, open
dust port cover and attach vacuum hose
(optional accessory) to the dust port, and
connect opposite end the hose to a shop
vacuum cleaner.
To prevent personal injury,
always position vacuum
hose so that it does not interfere with the
lower guard, or the cutting operation at all
settings.
! WARNING
FIG. 2
TIGHTEN
LOOSEN
BLADE
STUD
LOWER
GUARD
SPRING
OUTER WASHER
Large Diameter
Faces Blade
INNER WASHER
Large Diameter
Faces Blade
BLADE
LOWER
GUARD
BLADE
SHAFT
UPPER
GUARD
! WARNING
WRENCH
OUTER WASHER
MARK
BM 2610925945 6-05 6/10/05 10:30 AM Page 10