Pro Boat PRB2200 V.1 - Manual (Page 11)

Section 7: Maintainance
11
Lubrication
It is important to lubricate the flex shaft of
the Miss Budweiser with cable grease after
every two hours of operation. Do not forget to
do this. You can purchase this grease at your local
hobby store. To lubricate the drive shaft, follow
these simple instructions.
 1. Carefully note how the drive shaft and prop
are presently installed. This is important so that
when you have finished lubricating the drive
shaft, you can correctly re-install the drive shaft.
 2. Loosen the ferrule screw that holds the
propeller shaft. Remove the propeller and shaft
from the aluminum strut.
 3. Use a 10mm wrench to hold the collet and
another 10mm wrench to loosen the collet nut.