Operation; Important Information; Engine Break-In - Mercury 300 XS OptiMax Manual

Important Information

IMPORTANT DAILY INSPECTION BEFORE EACH USE
Any outboard mounted on the boat must have the mounting hardware
inspected and checked to ensure that the hardware has not become loose. A
decal on the transom bracket reminds the owner to check the fasteners
securing the outboard to the transom before each use.
BEFORE STARTING THE ENGINE
Lack of oil pressure in the system can cause severe internal engine damage
during start‑up. Prime the oil injection pump on new or rebuilt engines or after
performing maintenance on the oiling system.
Refer to Priming the Oil Injection Pump for instructions.
FUEL REQUIREMENTS
Do not use premixed gas and oil in this engine. The engine automatically
receives extra oil during engine break‑in. Use a fresh supply of the
recommended gasoline during engine break‑in and after engine break‑in.
Engine Break‑in
Operating the boat at high speeds with the outboard trimmed too far under
can create excessive bow steer, resulting in the operator losing control of the
boat. Install the trim limit pin in a position that prevents excessive trim under
and operate the boat in a safe manner.
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OPERATION

Decal on the transom bracket
NOTICE
WARNING
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