5.Press and hold the spindle lock pin (A) Fig. 8, while rotating the grinding wheel clockwise by hand until the spindle lock engages.
6.Continue holding the spindle lock pin (A) Fig. 8 down while placing the lugs of the handle/spanner wrench (A) Fig. 9 in two of the holes of the outer flange (B) Fig. 9. Tighten securely by turning clockwise (Fig. 10).
A
B 
Fig. 6
A
B
Fig. 7
A
Fig. 8
A |
| B |
| B | Fig. 9 |
|
|
A
Fig. 10
USING A DISC GRINDER
Be certain that the wheel guard and auxiliary handle are installed.
Firmly grip the auxiliary handle and motor housing. See Fig. 11A for Model 7425 and Fig. 11B for Model 7429.
Lift the rear of the motor housing so that only the front section of the grinding wheel contacts the work. Use light pressure. Always lift the grinder off of the workpiece before starting or stopping motor.
The arrow on the front gear housing indicates the direction of the rotation of the grinding wheel.
Fig. 11A
Fig. 11B
12