Installation And Removal Of The Blade - Bosch 3912 Operating/Safety Instructions Manual

Assembly
Removal and Installation
of the Blade
Disconnect plug from power source
WARNING
!
before performing any assembly,
adjustment or repair to avoid possible injury.
Note: Clean blade of any excess oil before installation.
1. Rotate the lower guard 1 by hand. Loosen, but do not
remove, the cover plate screw 2 using a Phillips or
straight screwdriver (Figure 2).
2. Rotate the cover plate 3 counterclockwise so the blade
bolt 4 is exposed (Figure 2).
3. Press and hold the arbor lock. Use the blade wrench to
remove the blade screw by turning wrench clockwise.
NOTE: The blade screw has a left hand thread.
4. Remove the blade bolt 4, outer washer 5 and the blade 6.
Inner washer 7 does not need to be removed (Figure 3).
5. To install the 12" blade, fit blade between the chip
deflectors 8 and onto the inner washer shoulder 9
(Figure 3 & 4). NOTE: Make sure the rotation arrow on
the blade matches the clockwise rotation arrow on the
lower guard.
To avoid injury, do not use a blade larger
WARNING
!
or smaller than 12" diameter and 1" arbor.
6. Replace the outer washer 5 in the proper orientation,
and tighten blade bolt 4 finger tight. Press the arbor lock
and tighten blade bolt 4 securely, but do not overtighten.
7. Rotate cover plate 3 clockwise to original position.
Tighten the screw 2.
Never use saw without cover plate
WARNING
!
securely in place. Lower guard will not
function properly.
8. Be sure the arbor lock is released so the blade turns
freely.
After installing a new blade, lower the
WARNING
!
blade into the table slot and check for any
contact with the base or turn table structure. If blade
contacts table, seek authorized service.
Cutting Kerf Inserts
NOTE: New inserts need to be cut initially to provide blade
clearance. This should be done by carefully making a straight
cut through the insert.
FIG. 2
5
FIG. 3
4
6
FIG. 4
30
1
3
2
6
5
4
7
9
3
2
9
8