Pilot Operating Handbook
Cavalon Pro
SECTION 9
SUPPLEMENTARY SYSTEMS
RotorSport _POH_Cavalon Pro
Revision 1.0 – Issue Date 12 04 2015
8-iii
8.5
Refuelling
Have aircraft electrically grounded before refuelling by attaching the earth (ground) lead to
the engine exhaust pipe. Be aware that most airfield refuelling equipment is laid out for
larger diameter tank filler necks and high flow rates. To avoid contamination, use a funnel
with strainer and/or filter when refuelling from canisters. In order to top-off both tanks allow
flow levels to balance-out.
NOTE
Do not fill to the absolute
maximum in order to allow for
thermal expansion of the fuel
Fuel level is checked using the dip stick
which has to be inserted diagonally from
the fuel filler port. Note that the upper
end of the stick shows 3 narrow rings as
markings. Remove dip stick from tank
and read level. Markings are available
per 10 litres. Wipe and return dip stick to
its holder.
8.6
Checking of Engine Oil
Level
Before attempting to check the engine oil level double check that both magnetos are
switched off. The oil level is measured with the aircraft in a level attitude and should be
between the marks on the dipstick.
Open oil tank access cover, remove oil reservoir cap and dipstick. Turn the engine by the
propeller in the correct sense of rotation until you clearly hear the oil gurgle in the tank. The
oil is returned to the oil tank by crankcase pressure, so rotate slowly over when the force to
turn the prop is at its highest to return the oil fastest.
Insert cleaned dipstick for measurement. Fill up oil according to the engine manufacturer’s
specification when required. After completion make sure the dipstick is in place and the
reservoir cap is back on securely. Install access cover.
CAUTION
Never attempt to turn the engine against its sense of rotation as this may lead
to starter damage.
Fuel and Engine Coolant
Dip Stick
