Tayana VANCOUVER 42 Operation And Maintenance Manual Download Page 36

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E. Fuel System

Tankage consists of two 60-gallon carbon steel tanks located beneath the cabin sole just aft of
the water tanks. On some models, up to 3 tanks may be installed to accommodate design changes
in the interior. Valves are located above the port tank to control the fuel supply to the engine.
Some center cockpit models have a “U” shaped tank around the mast/compression post. Figure
IV - 1 shows a representative fuel supply plumbing diagram. Figure IV - 2 is a plumbing diagram
for all fluids, and Figure IV - 3 is a representative tankage diagram.

NOTE:

Valve handles parallel to the line are ON, and at right angles are OFF.) A primary fuel

filter/water separator (such as the Racor 500) should be placed in the fuel line between the tanks
and the secondary fuel filter at the engine. Later engines may have this as a standard installation.
Installation of a vacuum gauge at the primary filter can be useful to determine when to replace the
filter element. Check periodically for water accumulation at this point by removing bottom plug
and draining into a container. Replace the element at least once each season, or as required by
manufacturer's recommendations. There is also a final fuel filter in the engine itself, and it should
be changed at intervals specified in your engine manual.

A biocide (such as Biobor) to prevent the growth of algae should be added to the fuel whenever
fuel is added to the tanks. An 8-inch port in the top of each tank provides access for cleaning or
repair/replacement of the fuel gauge sending units if installed. A dipstick is also located in each
tank, but they are not calibrated. Access to the port dipstick may not be available due to the
floorboards in some configurations, but a deck plate can be installed to allow access. The fuel tank
and fill deck-plate are electrically bonded to the main ground at the engine. Although diesel fuel is
considered relatively safe, safe fueling practices are always recommended:

1. Turn off heaters and galley equipment.
2. Extinguish all cigarettes, pipes, etc.
3. Stop engine and turn battery switch to OFF.
4. Close all hatches and ports to prevent entry of fumes.
5. Do not attempt to take on fuel in rough water or inclement weather, as water might enter
through the deck plate.
6. Avoid fueling after dark or in poorly lit areas.
7. Maintain continuous contact between the nozzle and the deck plate fitting to eliminate the
possibility of static electric discharge while filling.
8. Take on only gallonage anticipated by the fuel gauge. Do not overfill to point where fuel
remains in fill hose.
9. Wipe up or wash down spills after replacing and tightening deck plate cap.
10. Open all hatches, air bilges, and operate blower before starting engine or re-lighting galley
stove. Turn batteries ON.
11. See engine manual for "bleeding" procedures.

NOTE:

Acquire your fuel from a reliable source. A diesel engine requires clean fuel; water and

dirt are the engine’s worst enemy. Keep a clean and tight fuel system, and you will
have a most reliable engine.