The GO480 series engines are used mostly on multi engine aircraft so the propellers work backwards from typical single engine propellers.  If you loose oil pressure the GO480 the propeller goes to high pitch/low RPM.  Oil pressure drives the prop to the low pitch / high RPM and on into reverse.  With this in mind the following operating notes apply to all Simuflight converted Seabees and many Daubenspeck converted Seabees.

Operating Notes:

1.  Reverse pitch ONLY when the throttle is CLOSED or the engine RPM is less than 1200.
2. The propeller can only be reversed when the pitch is in LOW, the governor control must always be in the maximum RPM position - FORWARD.
3. Be sure the pitch is either in LOW or FULL REVERSE before the throttle is opened up otherwise the engine will over speed as the propeller goes through flat pitch.  The reverse pitch control provides a means to feel the position of the pitch.
4. Maximum RPM in reverse is 2100 above this the governor will take over and move the prop to forward pitch, this could cause the engine to over speed as it goes through flat pitch unless the power is reduced quickly.
5. While it is possible to get the propeller into reverse pitch during power-off decent after the airspeed has been reduced below the speed where the propeller windmills below the governor speed REVERSING THE PROPELLER WHILE AIRBORNE IS NOT RECOMMENDED, (the Seabee operation manual forbids it, you can lose rudder and possibly elevator control).
6. Extended operation in reverse could cause overheating of the engine cylinder heads as cooling air is reduced.
7. Do not shut off the engine with pitch in reverse.   This could cause damage to the control mechanism because the propeller springs will return the pitch to high after the engine is shut down and the oil pressure drops.  This is not enough "Beta" valve travel to allow for the change in pitch unless the reverse control is moved to FORWARD position.