R10002
BM21E SB21E

Heavy Duty Drills

Recommended grease is 279830-00.

The spindle (129) should be smeared with a little grease on assembly to prevent galling under the bearing.
The hammer face (137) should be smeared with grease on assembly.

To assemble gearbox speed change mechanism:
Turn the knob (148) clockwise until the number 1 is adjacent to the arrow on the gearcase.
Turn the knob clockwise until 2 clicks are heard. This is the selector fork (145) moving over the teeth of the selector shaft (144).
Turn the knob anti-clockwise so the 1 aligns with the arrow.
Fill the gearbox with 35 gms of grease.
Fit the shield (142) and fill with 3 gms of grease.
Fit the layshaft (143).