Mercury 350 MAG Manual page 55

• Engine overspeed
• Exhaust Manifold Temperature (8.1 and 496 models only)
Also the Engine Guardian Strategy will reduce engine power to 90 percent of maximum if any sensor on the power package fails.
For example, if the water inlet becomes partially blocked, Engine Guardian Strategy will reduce the available power level of the
engine to help prevent damage from decreased water flow to the engine. If the debris passes through and full water flow is restored,
engine power levels are restored to normal.
To avoid a possible recurrence of the problem you should contact an authorized dealer. The ECM stores the fault and with this
information the technician will be able to more rapidly diagnose problems.
90-8M0050539 MAY 2011
eng
Section 2 - Getting to Know Your Power Package
Page 47