Piper PA-28-161 Pilot Operating Handbook page 112

PIPER AIRCRAFT CORPORATION
PA-28-161, WARRIOR II
SECTION 6
WEIGHT AND BALANCE
(3) Defuel airplane. Then open all fuel drains until all remain-
ing fuel is drained. Operate engine on each tank until all
undrainable fuel is used and engine stops. Then add the
unusable fuel (2.0 gallons total, 1.0 gallon each wing).
CAUTION
Whenever the fuel system is completely drained
and fuel is replenished, it will be necessary to
run the engine for a minimum of three minutes
at 1000 RPM on each tank to insure no air
exists in the fuel supply lines.
(4) Fill with oil to full capacity.
(5) Place pilot and copilot seats in fourth (4th) notch, aft of
forward position. Put flaps in fully retracted position
and all control surfaces in the neutral position. Tow bar
should be in the proper location and all entrance and
baggage doors should be closed.
(6) Weigh the airplane inside a closed building to prevent
errors in the scale readings due to wind.
(b) Leveling
( 1) With airplane on scales, block main gear oleo pistons in the
fully extended position.
(2) Level airplane (refer to Figure 6-3) by deflating the nose
wheel tire to center bubble on level.
ISSUED: AUGUST 13, 1982
REPORT: VB-1180
6-3