Maintenance Schedule - Rotax 503 UL Operator's Manual

Equipped with breakerless dual ignition system and bing carbureto
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13.3.4) Remedies:
- -
Fuelling without aaces of water (use shammy as filter).
- G€nerously sized water separator.
- Fuel lines routing inclined.
prevenr condensation of humidity, i.e. avoid tempemture
differences between
aircraft and fuel.
- Add up to 2 7a isoprcpyl atcohol ro the fuel.
ATTENTIONT Fuels containing dcohol always carq/ a small amount of wat€r rn
solution. In case of tempentue changes or iflcleae of alcohol conteDtj water
ot a mixture of alcohol and water may settle and could cause troubles.
14) Maintenance:
14.1) Maintenance schedule:
WARNING:
1) Maintenance on engines and systerns requires special knowledge and tools. rt is therefore
rccommended to have these works performed by authorized service centers or dealers.
2) Disconnect spark plug leads with a tuming motion for all maintenance and inspecrion
procedues.
3) Putting spa* plug connector back on, make sure that spark plug teminal is ighr on
plu8.
Service times are based on average use, ilssatming engine is run at least once per *,eek for a
normal duty cycle or average flight. Total Linre b€fore teardown is derermined by the fiequen_
cy alld conditions ofusage. Ifthe engine i s not going to be u sed for a period of Z months or more,
consult storage ptocedrres in this section.
AJter initial break-in period certain irspections and checks must be made to ensure all
components and settings have rcmained tight and are within the specified tolerance. Failurc
to do so could lead to ptematurc engine failurc.
I
^.
t

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