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.
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.
ENGINE BREAK-IN FUEL MIXTURE
Use a 1:25 oil/gasoline mixture in the first tank of fuel.
BREAK-IN PROCEDURE
Vary the throttle setting during the first hour of operation. During the first hour of
operation, avoid remaining at a constant speed for more than two minutes and
avoid sustained wide open throttle.
Warming Up the Engine
It's important to warm‑up the engine for three minutes. This allows the
lubrication system to circulate and deliver oil to all the moving parts of an
engine.
Operating the engine without warm‑up will reduce engine performance and
shorten the life of the engine. Be sure to check that cooling water is coming out
of the water pump indicator hole during warm‑up.
a - Water pump indicator hole
NOTICE
Without sufficient cooling water, the engine, the water pump, and other
components will overheat and suffer damage. Provide a sufficient supply of
water to the water inlets during operation.
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