mjm yachts 40z Downeast, Руководство пользователя

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CHAPTER 5 FUEL SYSTEM
- 24 - 34z
5.3 RACOR PRIMARY FUEL FILTERS
Racor Filters are your first line of defense against bad fuel and
are installed just after the shut-off valves in the fuel lines, inside
the Systems Room, on either side bulkhead just forward of the
generator. Check these filters regularly for any accumulation of
water or contamination. Water will appear as a dirty gray, cloudy
substance in the clear bowl. You should be able to see thru the
pink fuel in the bowl at all times. Also, you should not see
bubbles passing through the filter while running. This would
indicate a leak on the suction side of the fuel system.
5.4
FUEL CONSUMPTION
You can learn several things from the chart below prepared from 3 separate runs in Jan-Feb
2009 in Boston Harbor, near Captiva Fl, and during the Miami Boatshow. Volvo-Penta technicians
conducted two of the runs on hull # 1 equipped with D6 370 HP IPS 500s.
Displacement (Boat Weight) Assuming similar hull designs, fuel efficiency is a function power:
weight ratios. Less weight equals less fuel for a given HP and we’ve already seen a difference
between Volvo-Penta IPS pod drives and Cummins sterndrives. The test runs done on 40z #1 run
were at approximately 21,000 lbs. displacement. Dry and empty scale weight of the boat was
16,000 lbs. The 21,000 lbs. included at least ¾ full tankage and approximately 1400 lbs. of
cruising gear and 2-4 people.
Propulsion Systems. The NMPG and Range numbers vary depending on engines installed and
the relative efficiency of the propulsion unit. The following chart can be made up for your specific
RACOR FUEL FILTERS Starboard and Port
in Systems Room under the Pilothouse
CLEAR GLASS INSPECTION BOWL
FILTER ACCESS LID – Be sure to close fuel
shut-off valve before opening. Be careful to
seal properly without pinching gasket.
WATER DRAIN PETCOCK – If water seen
in bowl, hold a paper cup under the petcock
and drain until clear fuel seen.
FUEL LINES from tank and to engine