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Maverick Boat Group
3207 Industrial 29th St. • Fort Pierce, Florida 34946
(772)-465-0631 • cobiaboats.com
Fuel-Water Separator &
Drain
Fuel-Water Separator
A Yamaha Fuel-Water Separator, or two for twin engines, is
installed behind the aft seat assembly. Simply lift up the seat
and you will be able to easily access the Fuel-Water separator.
The new, improved 10-micron filter provides superior filtration
ahead of the engine's on-board filters and injectors. Large
filtering and water capture areas maximize filtration while maintaining adequate flow
rate for larger engines. The fuel separator can be checked by removing it from the
mounting bracket and dumping it into an approved waste collection device. If there
appears to be an excessive amount of water, the filter component should be replaced.
See your authorized Cobia Dealer for replacement parts.
Garboard Drain Plug
The garboard drain plug is the small metal plug located at
the lowest point on the hull, at the bottom of the transom
right above the keel. The drain has been designed so that it
can be loosened by hand while the hull is out of the water
for draining. This allows the plug to stay in contact with the
surrounding frame so you’ll never misplace or lose it. You
can completely remove the insert by pulling back and continue turning in a counter-
clockwise motion. It is manufactured with a rubber seal in place to ensure your bilge is
watertight. Always make sure before putting the boat in the water that this plug is hand
tightened firmly. Excess water in the bilge may be an indication of a problem with this
plug or the automatic bilge pump. Refer to the Water Drain System diagram on page 37.
Maintenance Note: Yamaha recommends replacing the 10-
micron fuel filter on new boats after the first 10 hours or 1 month of
operation and every 50 hours or every 6 months thereafter. In
areas of high humidity where water in fuel supplies is a problem or
extensive engine operation occurs, more frequent replacement
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