Textron Lycoming IO-540 Series Operator's Manual page 57

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TEXTRON LYCOMING OPERATOR'S MANUAL
SECTION 3
0-540 & 10-540 SERIES
CURVE NO 12613A
PART THROTTLE FUEL CONSUMPTION
HELICOPTER ENGINE MODEL
CARBURETOR. MARVEL-SCHEBLER
FUEL GRADE, MINIMUM
COMPRESSION RATIO
SPARK TIMING
FUEL CONSUMPTION TOLERANCE
0-540F SERIES
MA-4-5
100/100LL
8501
25
°
BTC
± 4%
FUEL CONSUMPTION
U.S. G.PH.
20
22 24 26
ABSOLUTE MANIFOLD PRESSURE - IN HG
SPECIFIC FUEL CONSUMPTION
6
28
NOTE
TO OBTAIN FUEL CONSUMPTION AT ALTITUDE,
ENTER THIS CURVE WITH ACTUAL ALTITUDE
POWER OBTAINED FROM FLIGHT CONDITION
AS POINT "F" OF EXAMPLE ON ALTITUDE PER-
FORMANCE CURVE.
125
150 175
200
ACTUAL HORSEPOWER
225 250
Figure 3-11. Part Throttle Fuel Consumption
0-540-F Series
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