9) De-Icing System And Winter Operation - Rotax 914 F Maintenance Manual

9.7.9)
Date
Page
1997 02 01
64
De-icing system and winter operation
The risks of carburetor icing are commonly known. By air preheating the icing
of air humidity in the carburetor may be avoided. ROTAX does not supply any
carburetor preheating device.
WARNING: Carburetor icing is a common cause for engine trouble.
Because of the heating up of intake air due to boost process
preheating of the intake air might not be necessary. But the
option of a change over for air intake from engine compart-
ment is recommended as for instance the filter could be
blocked by icing.
Preheating of the intake air will result in loss of engine
performance because of lowering the air density.
A further measure to reduce the risk of carburetor icing is by proper handling
of the fuel. Install also a generously dimensioned water drap in the system to
avoid formation of ice in the fuel lines, filters etc.
Always take care at operation in wintertime of correct coolant mixing ratio. To
warrant trouble-free engine start also at low temperatures observe the special
directives in the Operator's Manual.
Main
914 F
Reference Modification no.
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