Figure 2-10. Fuel Strainer
2-58. ELECTRICAL SYSTEM.
2-59. SERVICING THE ELECTRICAL SYSTEM. Servicing the electrical system involves adding distilled
water to the battery to maintain correct electrolyte level, checking cable connections, and checking for any spilled
electrolyte that would lead to corrosion. (Refer to latest Piper Service Bulletin No. 631.) The security of all
electrical connections should be checked as well as the operation of all lights, general condition of the alternator
and starter. All electrical wires should be inspected for chafing and bare wires. For detailed information on this
system, refer to Section XI of this manual.
2-60. LUBRICATION.
2-61. OIL SYSTEM (ENGINE).
2-62. SERVICING OIL SYSTEM. The engine oil level should be checked before each flight and changed after
each 50 hours of engine operation. During oil change, the oil screen(s) should be removed and cleaned, and
when installed, the oil filter cartridge replaced. Intervals between oil changes can be increased as much as 100%
on engines equipped with full flow (cartridge type) oil filters provided the element is replaced each 50 hours of
operation and the specified octane fuel is used. Should fuel other than the specified octane rating for the power
plant be used, refer to the latest revision of Lycoming Service Letter No. L185 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 the proper season viscosity. For information on the use of detergent oil, refer
to Paragraph 2-68 and/ or latest revision of Lycoming Service Instruction Letter No. 1014.
A640
1. BODY
2. SCREEN
3. GASKET
4. STRAINER BOWL
5. BAIL WIRE
6. BAIL ASSEMBLY
7. SAFETY WIRE
8. DRAIN VALVE
PIPER AIRCRAFT
PA-28-161 CADET
AIRPLANE MAINTENANCE MANUAL
Issued: FEBRUARY 28, 1989
HANDLING AND SERV I C I N G
1B22