Excellent
20,921 reviews
Excellent
20,921 reviews
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Lycoming Overhaul Instructions TM-1-2R-0480-3 covers the O-480-1 has 88 pages. Cover date is 1957. Engine used in Beech L-23D Seminole. O-480-1, -1A 340 3400 100/100LL 7.30:1 Like Beech version of –B1B6 (Horizontal carburetor under engine) with -22 and -23 Magnetos.