3. GEARBOX OIL
Reduction Gearbox Oil in the Simonini Type "C" reduction gearbox. Recommended Oil is
9OWX/140EP. The quantity required to fill the gearbox is 170cc with gear box upright and 225cc
with gear box down.
Warning: Do not run the engine without sufficient oil in the Gear Box.
On the side of the Gear Box there are two Allen Screws which are used to inspect and indicate the
level of oil in the gear box.
It is always the lower of the 2 screws that indicates maximum oil level. The lower Allen screw can
be carefully opened to check that the oil leve1 is sufficient. Do not over fill above this level. When
the instillation requires the gearbox to be fitted with the propeller shaft below the crankshaft, the
oil filler cap and the oil drain plug are interchanged.
Stop: Ensure before every flight that you have sufficient oil in the gearbox.
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