MerCruiser 350 Magnum MPI, Operation & Maintenance Manual

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10
CA15
Freezing Temperature Operation
IMPORTANT: It boat is operated during periods of freezing temperature, precautions must be taken to pre-
vent freezing damage to power package. Refer to “COLD WEATHER or EXTENDED STORAGE” for draining
instructions.
CA18
Attention Required After Submersion
•
Before recovery, contact a MerCruiser Dealer.
•
After recovery, immediate service by an Authorized MerCruiser Dealer is required to prevent serious damage
to power package.
CA21
Stolen Power Package
If your power package is stolen, immediately advise the local authorities and Mercury Marine of the model and
serial number(s) and to whom the recovery is to be reported. This “Stolen Motor” information is placed into a file
at Mercury Marine to aid authorities and dealers in recovery of stolen motors.
CA22
Replacement Service Parts
! WARNING
Electrical, ignition and fuel system components on MerCruiser gasoline power packages are designed
and manufactured to comply with U.S. Coast Guard rules and regulations to minimize risks of fire or explo-
sion.
Use of replacement electrical, ignition or fuel system components, which do not comply to these rules and
regulations, could result in a fire or explosion hazard and should be avoided.
When servicing the electrical, ignition and fuel systems, it is extremely important that all components are
properly installed and tightened. If not, any electrical or ignition component would permit sparks to ignite
fuel vapors from fuel system leaks, if they existed.
Marine engines are expected to operate at or near full–throttle for most of their life. They are also expected to oper-
ate in both fresh and saltwater environments. These conditions require numerous special parts. Care should be
exercised when replacing marine engine parts as specifications are quite different from those of the standard auto-
motive engine.
For example, one of the most important, and probably the least suspected special replacement part, is the cylinder
head gasket. Since saltwater is highly corrosive, the steel-type automotive head gasket cannot be used. A marine
engine head gasket uses special materials to resist corrosive action.
Since marine engines must be capable of running at or near maximum RPM much of the time, special valve
springs, valve lifters, pistons, bearings, camshafts and other heavy-duty moving parts are required for long life and
peak performance.
These are but a few of the many special modifications that are required in MerCruiser marine engines to provide
long life and dependable performance.