TEXTRON LYCOMING OPERATOR'S MANUAL
0-360 and ASSOCIATED MODELS SECTION 4
3. 50 HOUR INSPECTION (ENGINE). In addition to the items listed
for daily pre-flight inspection,
the following maintenance checks
should be
made after every
50 hours of operation.
a. Ignition System -
(1)
If fouling of spark plugs is apparent,
rotate bottom plugs
to up-
per position.
(2) Examine
spark plug leads of cable
and ceramics for corrosion
and deposits. This condition
is evidence of either
leaking spark plugs,
improper cleaning of the spark
plug walls or connector
ends. Where
this condition is found, clean the cable ends, spark plug walls and
ceramics with a dry, clean cloth or a clean cloth moistened with
methyl-ethyl ketone. All parts should be clean and dry before
reassembly.
(3) Check ignition harness for security of mounting clamps and be
sure
connections are tight at
spark plug and magneto terminals.
b. Fuel and Induction
System - Check the primer
lines for leaks and
security of the clamps. Remove and clean the fuel inlet strainers. Check
the mixture control and throttle linkage for travel, freedom of move-
ment, security of the clamps
and lubricate if necessary.
Check the air
intake ducts for leaks, security,
filter damage; evidence of
dust or other
solid material in
the ducts is indicative of inadequate
filter care or damag-
ed filter. Check vent lines for evidence of fuel or oil seepage; if pre-
sent, fuel pump may require replacement.
c. Lubrication System -
(1) Replace external full flow oil filter element. (Check used element
for metal particles.)
Drain and renew
lubricating oil.
(2)
(Engines Not
Equipped with
External Filter)
- Remove oil
pressure
screen and
clean thoroughly. Note carefully
for presence of metal
particles that are indicative of internal engine damage. Change oil
every 25 hours.
4-3
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