Bosch Power Tools 3912 manual Removal and Installation Blade, Cutting Kerf Inserts

Assembly

Removal and Installation

of the Blade

!WARNING Disconnect plug from power source 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.

!WARNING To avoid injury, do not use a blade larger 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.

!WARNING Never use saw without cover plate securely in place. Lower guard will not

function properly.

8.Be sure the arbor lock is released so the blade turns freely.

!WARNING After installing a new blade, lower the 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.

1

FIG. 2

3

2

6

5

4

57

FIG. 3

4

FIG. 4

3

2

9

8