Mercury Mariner 30/40 4-Stroke Outboard Service Manual 1998, Page 285Get this manual

Mercury Mariner 30/40 4-Stroke Outboard Service Manual 1998, Page 285

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POWER TRIM

TRIMMING OUTBOARDUP" ("OUT")

Excessive trim "out" may reduce the stability of some high speed hullsTo correct instability at high speed, reduce the power gradually