Hanse 370 - 1.7.5. Exhaust system; Details the exhaust discharge, water collector, and cooling function.; 1.7.6. Lubrication; Covers engine lubrication, oil changes, and oil disposal.

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When the engine is running:
 visually check whether cooling water comes out of the exhaust.
The temperature guard sets off a visual and acoustic alarm if the engine is overheated. In this case
turn off the engine and check the cooling water circulation!
Attention
If the engine does not start after the third attempt, please shut the
seawater valve for cooling the engine. Try to start the engine again. If
the engine starts, open the seawater valve again (within half a minute).
1.7.5. Exhaust system
The exhaust is discharged at the stern, thus reducing the sound emission. The exhaust gas duct
consists of hoses with a water collector which simultaneously functions as a sound absorber. The
exhaust installation is included in the seawater cooling systems.
Beneath the manifold the water is led to the exhaust installation and discharged to the outside
along with the exhaust gases. It cools the exhaust. This simultaneously absorbs the sound.
It is very important that the cooling circuit is running. As already mentioned in the section on the
cooling system, check whether water is discharged from the exhaust pipe while the engine is
running. The exhaust gas should neither be sooty nor blue. If this is the case, either the engine’s air
filter must be cleaned – which you can do yourself – or a specialist workshop has to adjust the
engine.
For safety reasons, the hose connections on the suction side are equipped with double hose
clamps.
If the boat is not in use, shut the seacocks and drain the water out of the exhaust duct.
Notes on winter storage
Freshwater and seawater circuits are to be emptied according to the detailed instructions in the
engine’s maintenance guide, and the conduits are to be ventilated.
1.7.6. Lubrication
The machines are lubricated according to the specifications in the operating instructions of the
engine and other installations.
Please note that during oil change the oil must be sucked out with a pump. When changing the
filter you should use an oil absorbing cloth against dirt.
The oil must be changed at least once a year even if the boat has travelled very little.
A well maintained boat should never leak. All the same, the engine’s mount is shaped in the form
of a closed tub, so that not even the smallest amount of oil can enter the bilge and thus the
pumped out bilge water. In case water that is possibly mixed with traces of oil collects there, it
must be filled into a separate canister by means of a small draining pump and disposed of together
with the used oil.