Optimum BF16 Vario Modification Instructions page 45

Modification BF20 to a ball bearing spindle
6.0.37 Reassemble rubber cover and screw on
the limit stop again.
03 / 08 / 2006 Ball bearing spindle assembly and maintenance instruction ; Version 1.4.7
OPTIMUM
M A S C H I N E N - G E R M A N Y
Table
Cover plate
Illustr.6-58: Mount cover plates
Rubber cover
Illustr.6-59: Assemble rubber cover
Limit stop
Illustr.6-60: Screw on limit stop
Page 46