OPERATION
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Operating in Saltwater or Polluted Water
We recommend that you flush the internal water passages of your
outboard with fresh water after each use in salt or polluted water.
This will prevent a buildup of deposits from clogging the water
passages. Refer to Maintenance ‑ Flushing the Cooling System.
If you keep your boat moored in the water, always tilt the outboard
so the gearcase is completely out of water (except in freezing
temperatures) when not in use.
Wash the outboard exterior and flush out the exhaust outlet of the
propeller and gearcase with fresh water after each use. Each
month, spray Mercury Precision or Quicksilver Corrosion Guard on
external metal surfaces. Do not spray on corrosion control anodes
as this will reduce the effectiveness of the anodes.
Operating at High Elevations
IMPORTANT: To prevent serious damage to the engine caused
by a lean fuel mixture, do not operate your outboard (if the jets were
changed for high elevation) at a lower elevation unless the jets are
changed again to correspond to the new elevation.
Operating your outboard at an elevation higher than 750 m
(2500 ft.) above sea level may require a carburetor jet change and/
or different pitch propeller. Consult your dealer. This will reduce
the normal performance loss experienced as a result of reduced
oxygen in the air causing an overly rich fuel mixture.
Engine Break‑in Procedure
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.
MODELS WITH OIL INJECTION
Engine Break-in Fuel Mixture - Use a 50:1 (2%) gasoline/oil
mixture in the first tank of fuel. Use of this fuel mixture combined
with oil from the oil injection system will supply adequate lubrication
during engine break‑in.
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