PIPER AIRCRAFT, INC.
PA-28-161, WARRIOR III
MAINTENANCE MANUAL
PAGE 1
Nov 30/06
1I7
12-20-00
SCHEDULED SERVICING
Routine cleaning and lubrication of the airplane and its component parts will significantly extend its
service life and reduce the frequency of repairs.
1. Fuel System
A. At intervals of 50 hours or 90 days, whichever comes first, clean:
(1) The fuel screen/filter (i.e. - strainer) in the gascolator mounted on the lower left side of the
firewall. See Figure 1.
(2) Electric fuel pump screen, on lower left side of engine compartment.
(3) Screen in inlet side of carburetor.
B. Flushing Tanks and Selector Valve
(1) To flush the fuel tanks and selector valve, disconnect the fuel line at the carburetor.
(2) Select a fuel tank, turn on the electric fuel pump and flush fuel through the system until it is
determined there is no dirt and foreign matter in the fuel valve or tank. During this operation,
agitation of the fuel within the tank will help pick up and remove any dirt.
(3) Repeat this procedure for each tank.
(4) When all tanks are flushed, clean all filters.
2. Oil System (See Oil System, 12-10-00.)
Engine oil level should be checked before each flight. The engine oil and full flow cartridge filter should
be changed every 50 hours or four months, whichever occurs first. Refer to the latest revision of
Lycoming Service Bulletin 480. Should fuel other than the specified octane rating for the power plant be
used, refer to the latest revision Lycoming Service Letter No. L185, for additional information and
recommended service procedures.
Gascolator
Figure 1
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