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
NOTICE: 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
Draining the Seawater Cooling System
on page 70.
3. Wipe off any dust or oil from the outside
of the 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.
8. Waterproof the engine room to prevent
rain or seawater from entering.
9. Charge the battery once a month to
compensate for battery’s self-
discharge.
10. Remove key from key switch and cover
key switch with moisture cap (if
equipped).
BY Series Operation Manual 69
© 2008 Yanmar Marine International
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