Tayana VANCOUVER 42, Operation And Maintenance Manual

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nor are they as easy to maintain as the new systems. Certainly with the older muffler systems they
should be watched carefully for the formation of cracks.
The standard equipped fuel tanks are of black iron construction and are mounted low in the hull,
port and starboard, aft of the fresh water tanks. They are baffled and have large manholes for
access. Each has a dipstick for checking fuel quantity. Copper fuel lines leading to the engine
from each tank have selector/cutoff valves that are tagged and identified. Both tanks may be use
simultaneously or as selected. It is an extremely good idea to insure that at least one readily
accessible Racor type fuel filter/water separator is installed into the fuel prior to the main engine
fuel filter. An electric fuel pump might be another option to consider in order to facilitate bleeding
and priming the fuel system. The relatively large quantity of fuel stored in your V-42's tank and
the relatively low consumption rates by the very economical Yanmar type engines today, make it
imperative that you pay very close attention to your fuel and fuel system cleanliness. Dirty fuel
and clogged filters may cause engine stoppages, which occur in rough conditions when you most
count on your normally reliable engine’s output. Keeping tanks full will inhibit the condensation
of unwanted water in your tanks which facilitate the growth of slime or fungus; use fungicide
additives when refueling. And consider “polishing” your fuel every couple of seasons or replacing
it if you do not use your boat often enough to turn over the fuel in your tanks. You may wish to
install a fuel filtering system that would accomplish the same purpose, such as a Racor-type. You
may need to clean your tanks after a number of years; it could be an inexpensive maintenance job
that will help keep your engine running properly.
Raw water for cooling is taken in through a seacock generally located behind the engine. This
line and peacock is tagged clearly at the factory as are all other lines, wires, and cables. If not,
trace these lines and retag them now. Doing it later in the dark , in rough conditions is not fun.
The raw water intake line passes through a large filter prior to the engine. This filter has a see-
through type inspection plate and should be checked often, if you are in debris, jelly fish, or other
dirty water conditions. Cooling water is led to the heat exchanger and then into the exhaust system
for discharge overboard with the engine exhaust. When starting your diesel engine, listen for the
splashing exhaust water. The raw water peacock must be open prior to engine starting!
b. Maintenance
Please consult your engine manuals for detailed procedures concerning operation and
maintenance. You should have the basic operations manual which also includes simplified
maintenance procedures, however, you should also obtain your particular engine’s service manual.
This manual typically is a much more detailed description of how the engine operates and
includes detailed exploded views of all pertinent parts of your engine to include parts numbers.
Yanmar, for example, has a new owner’s engine orientation course that lasts two days and you
normally go home with a copy of the service manual and a much fuller understanding of how to
operate and maintain your boat’s diesel engine. The engine manuals must be followed exactly to
obtain maximum engine life and to keep your warranty in effect. The following sections
summarize the maintenance requirements described in the manual and are intended as general
information only.
(1) Break-in Period