Checking Fluid Levels - Mercury 540 Bravo Manual

Every 100 hours of operation or once a
year, whichever occurs first.

Checking Fluid Levels

CRANKCASE OIL
The engine crankcase oil level must be checked at the intervals specified in the
Maintenance Chart.
NOTE: Oil consumption is greatly dependant on engine speed. Consumption is
highest at wide‑open throttle and decreases substantially as engine speed is
reduced. It is common for big block, high‑performance engines to use up to one
quart of oil in one to five hours if the engine is operated continuously at the
upper end of the RPM range.
Stop the engine. Allow approximately five minutes for the oil to drain into the oil
pan. The boat must be at rest in the water.
1. Remove the dipstick, wipe it clean, and install the dipstick.
MAINTENANCE
Interval
Power package exterior surfaces ‑
Clean and paint.
Steering head and remote control ‑
Inspect and lubricate.
Drive unit bellows and clamps ‑
Inspect.
Propeller shaft bearing ‑ Inspect by
measuring shaft deflection.
Drive bearing carrier ‑ Check bore
for evidence of friction with the
propeller shaft.
Rear driveline bearing support
block ‑ Check alignment (driveline
models).
50
Task
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