Mercury Racing Sterndrive 600SCi, User Manual

Page: 73 / 148

MAINTENANCE
63
• Explaining and demonstrating the operation of the power
package and boat.
• Providing the customer with a copy of a
Pre-delivery
Inspection Checklist
prior to delivery.
Replacement Service Parts
!
WARNING
Avoid fire or explosion hazard. Electrical, ignition and fuel system
components on Mercury Marine gasoline power packages are
designed and manufactured to comply with U.S. Coast Guard
rules and regulations to minimize risks of fire or explosion.
Do not use replacement electrical, ignition or fuel system
components, which do not comply to these rules and regulations.
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 operate in 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 automotive 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 Mercury Marine engines to provide long life and
dependable performance.