Williams MINIJET Handbuch Seite 22

Winterising/Dry Storage
Store the boat covered in a clean, ventilated
and dry place that is not affected by major
variations in temperature or humidity. For full
information on servicing please refer to
the Rotax engine service manual.
BUOYANCY TUBE
Prior to storing over the winter periods the
buoyancy tubes must be deflated and hosed
down with fresh water, removing any small
stones and weed from around them, then
allowed to dry. Use a proprietary tube cleaner
and polish to ensure optimum condition. Store
with the tubes lightly inflated where possible.
MAINTENANCE OF THE HULL & DECK
Wash the deck regularly using a mild
detergent in warm water and hose down to
remove sand etc. The hull and deck should be
regularly polished using a good quality gelcoat
polish to minimise fade and UV chalking.
BATTERY
The battery used in the Minijet is of the dry cell
type. This means that the electrolyte content is
absorbed in a special fabric which requires no
'topping up' and is leak proof in any position.
When the boat is not being used for an
extended period of time, disconnect the earth
terminal. A trickle-charging device, such as an
Accumate, will extend battery life.
FUEL SYSTEM
Fuel will become stale over a period of several
months. A full fuel tank prevents moisture and
mildew from developing within the tank. Fuel
begins to break down after approximately
30 days. Adding a fuel stabilizer in the
recommended ratio will minimise this.
COOLING SYSTEM
Flush the open loop water circuit to remove
salt, sand, shells and other contaminants
that may be trapped in the raw water cooling
circuit (refer to Exhaust System Flushing
section).
22
Measure the anti-freeze content of the engine
coolant with a commercially available anti-
freeze tester. A 50/50 mixture of distilled water
to propylene glycol provides sufficient frost
protection to approx. -37°C. Run the same
50/50 antifreeze mixture through the open
loop system using the flush attachment and a
suitable container.
ENGINE OIL CHANGE
It is important to change the oil. Used engine
oil contains water, unburned fuel and small
metal particles. When old oil is left in the
engine for longer periods, corrosion and
degradation of bearings within the engine may
occur.
CONSERVING THE CYLINDERS
Unscrew the spark plugs and pour
approximately 10ml of clean engine oil directly
into each spark plug bore. Crank the engine a
few times with the starter. Screw in the spark
plugs again.
GREASE CABLES
Grease all control cables at both ends and
exercise them to ensure good coverage.
GENERAL CORROSION PROTECTION
Use maintenance spray on key switch. Apply
a proprietary corrosion guard to engine,
electrical connections, under helm and around
jet pump area.