Operations Manual
HKS 700E
19
6.4.2. Cold starting procedures
Preheating the engine using hot air is recommended.
• Throttle OFF
• Choke ON
Limit cranking the engine to periods not much longer than 10 sec. After the
engine starts, operate the choke as required to keep the engine running but
avoid allowing the engine to exceed 2500 R/MIN.
6.4.3. Fuel system icing
(1) Icing due to water in the fuel
Water in the fuel will accumulate at the lower parts of the fuel system and can
lead to freezing of the fuel lines, filters and carburetor jets.
Remedies:
• Use a fuel/water separating funnel, if the fuel supply is suspect.
• Drain the water in the fuel tank during the daily check.
• Drain and inspect the fuel system during the 50-hour inspection.
• Prevent fuel tank condensation, by keeping the fuel tank full when in
short term storage, drain the fuel tank when not in use for longer
periods.
• Avoid temperature differences between aircraft and fuel.
CAUTION!
Fuels containing alcohol always carry a small amount of water in solution.
Temperature changes or an increase of alcohol content may cause water
or a mixture of alcohol and water to settle to the bottom of the fuel tank
and could cause engine stoppage.
(2) Carburetor icing because of high air humidity.
With ambient temperatures between 0 Deg.C (32 Deg.F) and + 10 Deg.C
(60 Deg.F) and very high humidity, carburetor icing may occur.
WARNING!
Under such atmospheric conditions monitor R/MIN. Engine stoppage may
occur if operations are continued under these conditions.
An electrical carburetor heating system is available as an option parts. Please
see the parts list or the installation manual.
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