O-360 ΘΝ Series Operator’s Manual Lycoming Part Number: 60297-25 ©2007 by Lycoming. All rights reserved.
10. ENGINE SHUT-DOWN. a. Set propeller at minimum blade angle (where applicable). b. Idle until there is a decided decrease in cylinder head temperatures. c. Move mixture control to the idle cut-off position. d. When engine stops, turn ignition switch to off position.