
BY Series Operation Manual 107
BY Series Operation Manual
LONG-TERM
STORAGE
If the engine is not to be used for an
extended period of time, special measures
should be taken to protect the coolant
system, fuel system and combustion
chambers from corrosion and the exterior
from rusting. It is recommended that you
see your authorized Yanmar marine dealer
or distributor to prepare the engine for
long-term storage.
The engine can normally stand idle for up
to six months. If it remains unused for
longer than this, please contact your
authorized Yanmar marine dealer or
distributor.
Winter Storage
Drain water from fuel tank and fuel filters
before and after extended storage.
To reduce the risk of condensation in the
fuel tank during winter storage, fill the tank
with fuel and treat with diesel fuel
stabilizer.
PREPARE ENGINE FOR
LONG-TERM STORAGE
IMPORTANT
Do not drain closed cooling
system for long-term storage.
Antifreeze must be used to avoid
freezing and damaging of
components. Antifreeze will
prevent rusting during long-term
storage.
1. Change engine oil and filter.
2. Drain seawater cooling system. See
Drain Seawater Cooling System on
page 108.
3. Wipe off any dust or oil from the outside
of engine.
4. Drain fuel tank or fill the tank to prevent
condensation.
5. Grease the exposed areas and joints of
the remote control cables and the
bearings of the remote control handle.
6. Seal the intake silencer, exhaust pipe,
etc. to prevent moisture or
contamination from entering engine.
7. Completely drain bilge in hull bottom.
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