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Mercury 90 Operation Maintenance Warranty Installation Manual

Mercury 90
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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.
51985
Decal on the transom bracket
BEFORE STARTING THE ENGINE
NOTICE
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.
OIL RECOMMENDATION
Recommended Oil
OptiMax Oil or Premium Plus 2Cycle TCW3
Outboard Oil
OptiMax Oil or Premium Plus TC‑W3 is a higher grade oil that provides
increased lubrication and extra resistance to carbon buildup when used with
good or varying grades of gasoline.
IMPORTANT: Oil must be NMMA certified TC‑W3 2‑Cycle oil.
OPERATION
58 eng

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Mercury 90 Specifications

General IconGeneral
BrandMercury
Model90
CategoryOutboard Motor
LanguageEnglish

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