Continental Motors GTSIO-520 SERIES Operator's Manual page 42

change period may be extended
to
100 hours. When using the taller
(5.80 inch high) filter, the filter may also be changed at the 100-hour
period. The smaller filter (4.80 inch high) must be changed at the
50-hour inspection period. Inspect and clean oil screens, if
applicable, at each oil change. These fine mesh screens filter out
carbon and other particles from the lubrication system. New engines
frequently show widely dispersed metal flakes and lint on the first
few oil changes. If they persist, or if large amounts of metal are
apparent on any oil change, it should be investigated thoroughly.
(See Service Bulletin M73-3, Rev.
1.)
f. Check control connections, levers and linkage for security of
attaching parts, for safetying and for wear of pins and bearings. Add
a drop of engine oil on each end of the air throttle shaft and at each
end of the linkage. No other lubrication is required. Repair or replace
defective linkage.
g. Nozzles need only be removed every 300 hours for periodic
inspection and cleaning unless a visual inspection reveals damage or
green stain indicating plugging has occurred. When necessary to
remove the nozzles, a standard half-inch spark plug socket is the
correct tool to use. Slosh the nozzle in a cleaning solvent such as
lacquer thinner or acetone. If nozzles are exceptionally varnished,
soak in solvent for several hours. Blow nozzles clean with compressed
air: Do not attempt to clean with wire or other similar object in the
effort to dislodge plugging. If obstruction cannot be removed by
soaking and blowing with compressed air, replace the nozzle. Nozzles
are identified by a number and letter on the hex. Replacement
nozzles must be of the same symbol. Use only engine oil as a thread
lubricant.
h. Remove, clean, inspect, test and adjust all spark plugs. Note
the position number as the plugs are removed. Ceramic insulator on
center electrode should be slightly brown, but not cracked or
chipped. Check and adjust electrode gap (see Service Bulletin
M68-4). Before installing plugs, coat thread with film of BG mica
thread lubricant. Rotate the plugs from top to bottom and bottom
to top. Install and torque to 300 to 360 inch lbs.
1.
If oil pressure has been fluctuating during operation of the oil
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