Operating instructions

9-7
TABLE XIX. TEST OPERATING LIMITS
FEATURE IO-520-M
Maximum takeoff power
Maximum continuous power
Full throttle speed (RPM)
Idling speed (RPM)
Fuel grade (Octane)
Fuel consumption at full throttle (Lbs./Hr.
Fuel pump pressure at full throttle (psi)
Fuel pump pressure at idle (psi)
Metered fuel pressure at full throttle (psi)
Metered fuel pressure at idle (psi)
Engine intake air temperature
Engine intake air pressure (Max.) (In. H2O)
Manifold pressure at full throttle (In. Hg)
Manifold pressure at idle (I n. Hg)
Oil Grade Above 40° F.
Below 40° F.
Oil consumption at max. continuous
power (Lbs./Hr.)
Oil temperature (desired range)
Oil temperature (Max.)
Oil pressure at full throttle (psi max.)
(oil temperature 175-185°F.)
Oil pressure at idle (psi min.)
(oil temperature 140-150°F.)
Ignition timing Left Magneto (BTC)
(±1°) Right Magneto (BTC)
Magneto drop at 2100 RPM (Max.) (RPM)
Magneto Spread
Cylinder head temperature (Max.) with
bayonet thermocouple
*Crankcase pressure (Max.) (In. H2O)
285
285
2700-2750
575-625
100LL/100
139-147
29.5-33.5
6.0-7.0
17.6-19.2
3.5-4.0
Ambient
1.0
28.75
18.5 Max.
SAE 50
SAE 30 or
10W30
3
150-200° F.
240°F.
30-60
10
22°
22°
150
50
460°F.
4.0