SECTION 3 LYCOMING OPERATOR’S MANUAL
OPERATING INSTRUCTIONS O-235 AND O-290 SERIES
9. SHUT-DOWN PROCEDURE.
a. Idle engine at approximately 800 to 900 RPM until there is a decided drop in cylinder head
temperature.
b. Move mixture control to “Idle Cut-Off”.
c. After engine stops, set magneto switch at the “off” position; this will prevent after-firing.
3-10
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