Maintenance And Winter Storage; Washing And Cleaning; Winter Storage - Terhi Tender Eignerhandbuch

4 Maintenance and winter storage

Take your Terhi boat out of the water in good time before
there is any chance that the water will freeze. Your boat is
not designed for use in ice-covered waters.

4.1 Washing and cleaning

Keep your boat clean and tidy. This enhances comfort
and safety and increases the boats re-sale value. The
fuel consumption of a motor boat is significantly af-
fected by the cleanliness of the hull and engine parts
beneath the surface of the water. Usually the use of
ordinary household detergents and boat-wax is suffi-
cient for taking care of the inner shell and sides of an
ABS boat. The removal of abrasions and difficult stains
can be done using a fine polish. If the boat has been
kept in the water, wash the hull as soon as it has been
lifted out. Algae and slime are more easily removed
if they are not allowed to dry. You can use a brush or
wooden or plastic scraper to ease the work, but avoid
the use of a scratching metal scraper.
To maintain the brightness of the acid proof parts,
the parts must be kept clean and waxed. Without
any damages, the parts must be washed and waxed
at least two times during the summer. Washing and
waxing has to be done also before moving the boat to
dockyard for winter.
The condition of the plywood benches' edges has
to be checked every spring and autumn. If needed, the
edges must be impregnate with Terhi plywood bench
preservative.
Storing and maintenance of oars: When not in use,
store in a dry place away from direct sunlight. You
should check the condition of your oars regularly. If
the oars are fine but the varnish is damaged, please
remove the varnish and apply 2-3 layers of urethane
varnish.
Figure 9.
Terhi – Owner's manual
NOTE! Do not clean with acetone, thinner, petrol, ke-
tone or other strong solvents, as they may damage the
plastic surface.

4.2 Winter storage

The best place to store a Terhi boat in winter is in a shed
or under a roof. The best storage position for a rowing
boat is upside-down, resting on trestles (figure 8). If the
Terhi Saiman is stored upside-down, it should also be
supported from the inside, at the keel in the direction
of the keel line.
For planing and console boats stored on trestles or
a trailer, ensure that the boat's weight is evenly distrib-
uted on its supports. Support surfaces must be wide
– for example a board lying flat is well-suited to the
purpose. When storing the boat on a trailer, the fas-
tening straps must be loosened. If the engine is still
mounted, its weight must be supported. During the pe-
riod of storage, heavy loose items such as the battery
and fuel tank should be removed.
The Terhi 480 and 450 models have also been fit-
ted with a rain water drain plug. In the 480-models the
plug is found under the plastic cover in the fuel tank
compartment. Bilge water can be drained out here
when the boat is dry-docked. Leave the plug open dur-
ing storage, so that any condensation water can drain
away. Always keep this plug closed when the boat is in
the water. In the 450-models plug is found under pilge
inspection hatch.
If stored outdoors, cover the boat with a non-
transparent tarpaulin. Ensure, however, that the boat
has sufficient ventilation. When storing outdoors, make
sure that an excessive amount of snow cannot accu-
mulate on top of it. Storing a Terhi boat on its side is
not recommended.
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