5-20-03
100
HOUR
INSPECTION
Refer to Service Bulletin
M-82-4,
or
current revision as applicable.
Detailed information regarding adjustments, repair and replacement of components may be
found in this Overhaul Manual. The following items should be checked during
100
hour
inspections:
1.
Engine Conditions
a. Magneto RPM Drop: Check
b.
Full Power RPM: Check
c. Full Power Manifold Pressure: Check
d. Full Power Fuel Flow: Check
e. Idle RPM: Check
Record any values not conforming to engine specifications so that necessary repair or adjust-
ment can be accomplished.
2.
Oil Filter: Replace, inspect cartridge.
3.
Oil: Drain while engine is warm. Refill sump.
4.
Fuel System:
5.
Valves/Cylinders:
6.
Cylinders, Fins, Baffles:
7.
Spark Plugs:
If pre-inspection run-up indicates a problem, clean
fuel nozzles, metering unit screen, manifold valve
screen and adjust as necessary (see TCM Service
Bulletin
M84-6RI, M78-11 or current revision as
applicable.
Check compression. (Refer to Chapter
70-50-00.)
Inspect.
Inspect, clean,
regap
(i
necessary), reinstall. Rotate
plugs from upper to lower positions to lengthen plug
life.
8. High Tension Leads: Inspect for chafing and deterioration.
9.
Magnetos:
Check. Adjust points and timing if necessary.
NOTE.
. .
Minor changes in magneto timing can be expected during normal engine service.
The time and effort required to check and adjust the magnetos to specifications is slight and
the operator will be rewarded with longer contact point and spark plug life, smoother engine
operation and less corrective maintenance between routine inspections.
NOTE.
.
.
At each
500
hours, the magnetos should be disassembled and inspected according to
Magneto Service Manual.
10.
Magneto Filter:
lnspect for color, if white
o.k.,
if
red or con-
taminated, replace.
11.
Air Filter: Inspect and clean or replace as necessary.
12.
Alternate Air Door: Check operation.
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