Engine Operating Limitations; Engine Break-In - Mercury 540 Bravo Manual

Engine Operating Limitations

Maximum wide‑open throttle (WOT) RPM
Rev limit
1.
Idle RPM in gear
Idle RPM out of gear
Maximum fuel system flow rate
Fuel pressure at idle
Fuel pressure at wide‑open throttle
Coolant thermostat initially opens at:
Coolant thermostat is wide open at:
Minimum water pressure supplied to the
engine at WOT
Maximum water pressure supplied to the
engine at WOT
Minimum oil pressure at idle (hot)
Minimum oil pressure at WOT (hot)
7
8
b
a - Front of engine and boat
b - Firing order 1‑8‑4‑3‑6‑5‑7‑2
Engine Break‑in
IMPORTANT: Failure to follow the engine break‑in procedures can result in
poor performance throughout the life of the engine and can cause engine
damage. Always follow break‑in procedures.
1. Engines are equipped with an ignition system that has a built‑in 5600 RPM rev limiter. Engine is performing
normally if it will not exceed this RPM.
SPECIFICATIONS
3
5
4
6
28
5000–5400 RPM
5600 RPM
700 RPM
800 RPM
155 L/hr (41 gals/hr) at 5200
RPM
300 kPa (43.5 psi)
270 kPa (39.2 psi)
62° C (143° F)
70° C (158° F)
172 kPa (25 psi)
345 kPa (50 psi)
138–207 kPa (20–30 psi)
331–379 kPa (48–55 psi)
1
a
2
b
6985
eng