Fuel Filter Bowl And Screen; Draining Fuel System 1C22; Oil System 1C22; Servicing Oil System 1C22 - Piper Dakota Maintenance Manual

DRAINING FUEL SYSTEM
Drain fuel from system by opening valve at inboard end of each fuel tank. Push up on arms of drain valve
and turn counterclockwise to hold drain in open position. Flush type drain valves require a pin to hold the
valve open. Fuel remaining in system is drained through filter bowl. Drain an individual tank by closing
selector valve and draining as necessary.
OIL SYSTEM
SERVICING OIL SYSTEM
Do not introduce any trade additive into the basic lubricant
unless recommended by the engine manufacturer.
Engine oil level is checked before each flight and changed after each 50 hours of engine operation. During
oil change, oil screen(s) must be removed and cleaned. Intervals between oil changes can be increased by
100% on engines equipped with full flow (cartridge type) oil filters provided element is replaced each 50 hours
of operation. If fuel other than specified is used, refer to latest revision of Lycoming Service Letter No. Ll85
for additional information and recommended service procedures. The engine manufacturer does not
recommend oils by brand names. Use a quality brand aviation grade oil of proper viscosity. For information on
use of detergent oil, refer to Recommendations for Changing Oil and latest revision of Lycoming Service
Instruction No. l0l4.
PIPER AIRCRAFT
PA-28-236
MAINTENANCE MANUAL
Figure l2-l. Fuel Filter Bowl and Screen
—CAUTION—
1C22
12 - 12 - 00
Page - 12 - 02
Reissued: August 1, 1986