Pro Boat PRB2500 - Manual (Page 9)

Section 6: Maintenance (cont.)
9
Liberally lubricate the entire length of the flex shaft with
silicone cable grease as shown.
Carefully re-install the flex shaft and nylon bushing, making
certain that you correctly tighten the collet nut. Next, re-install
the drive shaft and propeller and tighten set screws on the
flats of the drive shaft.
5A
4
6A
6B
5B
Carefully pull the ferrule away from the stuffing tube. You will
need to pull at an angle to clear the aluminum strut.
3
Loosen the 2 manifold bolts with your 2.5mm Allen wrench.
Next insert your Allen driver into the hole located on the fly-
wheel to lock the crankshaft in place. Then use an 11mm
wrench to loosen the collet nut.