MONTGOMERY BOATS 340 SPORT YACHT, Owner'S Manual

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MONTEREY
BOATS
Seasonal Maintenance
• Coat all faucets and exposed electrical compo -
nents in the cabin and cockpit with a protecting
oil.
• Clean out, totally drain and completely dry the
sinks and ice maker.
• Thoroughly clean the interior of the boat.
Vacuum all carpets and dry clean drapes and
upholstery.
• Remove cushions, open the ice maker and
refrigerator doors and as many locker doors as
possible. Leaving as many of these areas open
as possible will improve the boat’s ventilation
during the storage period.
Note: It is recommended that a mildew
preventer be hung in the boat’s cabin
before it is closed for storage.
• Clean the exterior upholstery with a good
vinyl cleaner and dry thoroughly. Spray the
weather covers and boat upholstery with a
spray disinfectant. Enclosed areas such as the
refrigerator, ice maker, shower basin, storage
locker areas, etc. also should be sprayed with
this disinfectant.
14.2 Winterizing
Fresh Water System
The entire fresh water system must be completely
drained. Disconnect all hoses, check valves, etc.
and blow all the water from the system. Make
sure the water heater and fresh water tank are
completely drained. Use only very low air pressure
when doing this to prevent possible system dam-
age. Because of the check valve mechanism built
in the pump, blowing the lines will not remove the
water from the fresh water pump. Remove the
inlet and outlet hoses on the pump. Turn the pump
on and allow it to pump out any remaining water
(about a cupful). A recommended alternative to
the above-mentioned procedure is the use of com-
mercially available non toxic, fresh water system
antifreeze. After draining the potable water tank,
lines and water heater, pour the antifreeze mixture
into the fresh water tank, prime and operate the
pump until the mixture flows from all fresh water
faucets. Be sure to open all hot and cold water
faucets, including the fresh water shower in the
cockpit and the faucet in the wet bar. Make sure
antifreeze has flowed through all of the fresh water
drains and the ice maker supply line.
The shower drain water sump system must be
properly winterized. Clean debris from the drain
and sump and flush for several minutes with fresh
clean water. After the system is clean, pump
the drain sumps as dry as possible. Then pour a
potable water antifreeze mixture into the shower
drain until antifreeze has been pumped through
the entire system and out of the thru-hull. Fol-
low the same procedure for the optional grey
water sump system. Pour the antifreeze for the
grey water sump into the cabin sink drains until
antifreeze has been pumped through the entire
system and out of the thru-hull.
For additional information refer to the Fresh Wa-
ter System chapter. Also, refer to the ice maker
owner’s manual for information on winterizing
the ice maker.
Engine and Optional Generator Raw Water
Systems
Drain all of the sea strainers, heat exchangers
and raw water supply and discharge lines for the
engine and generator raw water supply pumps.
Make sure all seawater has drained from the ex-
haust system. Some, but not all, engine mufflers
could have a drain plug that must be removed to
properly drain the muffler. Once this is accom -
plished, pour a non toxic marine engine antifreeze
mixture into a large pail and put the engine raw
water intake lines into the solution. Run each en-
gine one at a time until the antifreeze solution is
visible at the transom exhaust port or the propeller
exhaust hub, then shut the engine off.
Note: Properly winterize the engines and
fuel system by following the engine
manufacturer’s winterizing proce-
dures located in your engine owner’s
manuals or contact a Monterey deal-
er.
Refer to the Raw Water System chapter for ad-
ditional information on the raw water system.
Marine Toilet
The marine toilet must be properly winterized by
following the manufacturer’s winterizing instruc-
tions in the marine toilet owner’s manual. The
fresh water supply will be winterized with the
fresh water system. Drain the discharge hoses
completely turning off the fresh water supply so
the bowl stays dry and flushing the toilet several
times. The head holding tank and macerator
discharge pump must be pumped dry and three
gallons of potable water antifreeze poured into