Do-It-Yourself Maintenance Suggestions; Diagnosing Efi Problems (If So Equipped); Water Separating Fuel Filter (Models With Electric Fuel Pump) - Mercury Ski User Manual

CA410

Do-It-Yourself Maintenance Suggestions

If you are one of those persons who likes to do-it-yourself, here are some suggestions for you.
Present-day marine equipment, such as your MerCruiser power package, are highly technical pieces of
machinery. Electronic ignition and special fuel delivery systems provide greater fuel economies, but also are
more complex for the untrained mechanic.
Do not attempt any repairs which are not covered in this manual unless you are aware of the precautions
("Cautions" and "Warnings") and procedures required. Your safety is of our concern.
If you attempt to service the product yourself, we suggest you order the maintenance procedures manual for
that model. This manual outlines the correct procedures to follow. Do not attempt repairs if you do not
understand the procedures.
There are special tools and equipment that are required to perform some repairs. Do not attempt these repairs
unless you have these special tools and/or equipment. You can cause damage to the product in excess of
the cost a dealer would charge you.
Also, if you partially disassemble an engine or drive assembly and are unable to repair it, the dealer's
mechanic must reassemble the components and test to determine the problem. This will cost you more than
taking it to the dealer immediately upon having a problem. It may be a very simple adjustment to correct the
problem.
Do not telephone the dealer, service office or the factory to attempt for them to diagnose a problem or request
the repair procedure. It is difficult for them to diagnose a problem over the telephone.
Your Authorized Dealer is there to service your power package. They have qualified factory-trained
mechanics.
It is recommended you have the dealer do periodic maintenance checks on your power package. Have them
winterize it in the fall and service it before the boating season. This will reduce the possibility of any problems
occurring during your boating season when you want trouble-free boating pleasure.
CA411

Diagnosing EFI Problems (If So Equipped)

Your Authorized MerCruiser Dealer has the proper service tools for diagnosing problems on Electronic Fuel
Injection (EFI) Systems. The Electronic Control Module (ECM) on these engines have the ability to detect some
problems with the system when they occur, and store a "Trouble Code" in the ECM's memory. This code can
then be read later by a service technician using a special diagnostic tool.
CA412

Water Separating Fuel Filter (Models with Electric Fuel Pump)

The electric fuel pump and factory installed water separating fuel filter have been carefully designed to
function properly together. Do not install additional fuel filters and/or water separating fuel filters
between fuel tank and engine.
The installation of additional filters may cause:
Fuel Vapor Locking
Difficult Warm-Starting
Piston Detonation Due to Lean Fuel Mixture
Poor Driveability
14
! CAUTION