Mainship 40 Trawler Single Operator's Manual - page 139
Mainship 40 Trawler Single & Twin • Maintenance
13.7
wool. After re-connecting the terminals, apply a coating
of grease or petroleum jelly (Vaseline) to protect them
against corrosion.
Important: Before cleaning the batteries, disconnect and
remove them from the boat.
* Replace corroded or damaged parts immediately.
* Use the standard battery test with a hydrometer to
check the condition of the battery.
* Remove the batteries from the boat during periods of
extended storage. Store the batteries in a cool (above
freezing), dry area. Do not set the batteries directly on a
concrete floor.
All batteries lose some charge during storage, but the
loss of charge is inversely proportional to the tempera-
ture. The lower the temperature, the less charge is lost.
Avoid storing the batteries in a humid area. Humidity will
lead to corrosion of the terminals.
13.4.10 Shore Power Cable Care
WARNING
!
!
Electrical shock can cause injury or death. Before
working on electrical system, disconnect all power
sources. Inform others to prevent accidental re-
connection of electrical service. All voltages above
12 volts are dangerous. Maintaining power cable
while connected to shore power can cause electrical
shock. Disconnect cord before maintenance.
Clean the cable with a grease cutting household deter-
gent. Apply a vinyl protector periodically.
The metallic parts of the cable are corrosion resistant.
You can, however, increase the life of the cable in a salt
water environment by wiping the exposed parts with fresh
water. Then, dry them and spray them with a moisture
repellent.
If the cable is dropped into salt water, rinse the plug and
connector end thoroughly in fresh water. Then shake or
blow off excess water and allow cable to dry. Spray plug
and connector with a moisture repellent before you use
the cable again.
13.4.11 Electrical System Connections
At least once each year, disconnect electrical connectors
in the bilge, engine, and upper control areas. Check the
terminals for corrosive buildup. Have your boat dealer
repair connectors and terminals if they are corroded.
13.4.12 Trim Tabs
Electro-hydraulic trim tabs are installed on your boat.
Annual inspection of hydraulic lines and fluid levels is rec-
ommended. The trim tab pump is located in the Lazarette,
mounted just below the hatch cover. See manufacturer’s
specifications for proper fluid and fluid levels.
13.5 Periodic Maintenance
Proper and timely maintenance is the best insurance
you can buy for trouble free and pleasurable boating.
Included in this section are maintenance charts which
identify maintenance tasks and their frequency. Use the
charts as a checklist.
Following are specific maintenance tasks that you should
complete after the first 20 hours of operation:
* Check rudder packing glands for leaks (no leaks at
all).
* Check propeller shaft packing glands for leaks (approx-
imately 1 drop per minute).
* Check all through hull fittings for leaks.
* Check all doors and cabinets for proper fit and opera-
tion.
* Realign propeller shaft
* Tighten all engine mounts.
* Complete engine maintenance as recommended by
engine manufacturer.
* Tighten all hose clamps and lubricate them.
* Check and tighten all pressurized water system fit-
tings.
* Check and service batteries, tighten battery connec-
tions, and lubricate as needed.
At the end of this chapter, you will find a maintenance
schedule. It is important that you keep the manufactur-
er’s documentation for the components and follow the