Yacht Manual DEHLER 32
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9. Environmental protection
9.1 Fuel and oil
When filling your Dehler 32 you should be extremely careful. A piece of cloth around the
filling cap can avoid fuel getting from the fuel hose into the water. In your engine manual
you will also find a diagram with a graph showing specific fuel consumption. This gives a
good indication for the engine’s optimum number of revolutions.
To change the oil of the engine a suction pump is placed in the opening for the oil dipstick,
since it cannot be drained as for a car. The oil should be changed at least once a year, even if
you have not made many trips. Before draining out the oil, let the engine warm up.
A well-maintained engine should never leak. In order nevertheless to avoid even the slightest
oil spill into the bilges and therefore into bilge water pumped out, the engine base is shaped
like a closed pan. Any water that collects there with possible traces of oil in it must be drawn
off through a small bilge pump (a suction pump should be included in the equipment), be put
into a separate container and disposed of together with the used oil. In any case you should
have oil-binding agents on board.
9.2 Rubbish
Rubbish does not belong in the water which goes without saying for any water sports
enthusiast. This holds good too for biologically degradable rubbish. On your boat you should
have a fixed place for rubbish, which you should collect and dispose of separately.
9.3 Noise
A wet exhaust of a diesel engine equipped with a silencer greatly reduces engine noise.
Rubber bearings, flexible couplings and engine compartment insulation reduce noise
emissions even more. You should nevertheless avoid accelerating too quickly and reduce the
number of revolutions in sea areas with heavy traffic.
9.4 Backwash
Natural shores are sensitive to backwash. Please keep an adequate distance between your
boat and such shores. The wave profile of your yacht will give you a good idea where to
reduce speed in order to avoid unnecessary backwash. In narrow waterways you should also
heed the relevant notices.
9.5 Exhaust fumes
Regular checking of exhaust fumes is necessary. The exhaust should neither expel black
smoke nor blue clouds. If this is the case you must clean either the air filter of the engine –
something you can do yourself – or a specialized workshop must re-adjust the settings of the
engine.
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