Volvo Penta D4 Operator's Manual page 43

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Trailering Your Boat
Check local legislation in respect of boat transportation
by trailer - there are differences in various national
trailer regulations.
Boats with stern drives
Trim the stern drive up to its "lift position" (maximum
lift) before the boat is pulled onto the trailer for trans-
portation. It is possible to trim the stern drive without
starting the engine. When the stern drive has reached
the highest lift position an automatic catch switches off
the current to the trim pump. The catch is released
automatically when the stern drive is trimmed down.
Always secure the stern drive in the up position with a
trailer kit (accessory) or similar so that it cannot fall
onto the trailer during transportation.
WARNING!
The engine must not be run with the drive in the "lift"
range.
Boats with reverse gear
Drain the water from the exhaust system to prevent
water entering the engine while the boat is being trans-
ported by trailer.
Cold Weather Precautions
If the engine bay cannot be kept frost free, the raw
water system must be drained and the freshwater sys-
tem coolant must have sufficient frost protection to
prevent frost bursting; refer to Seawater System,
Draining page 78 and Maintenance page 74
respectively for more detailed information.
Check the charge status of the battery. A poorly-
charged battery can freeze and burst.
Engine Shutdown
41