Long Storage - Yanmar 3YM30 Sevice Manual

2.7 Long storage

Observe the following instructions when the engine is to be stored for a long period without operation:
1) Do not drain cooling water in the cold season or before the long storage.
[NOTICE]
Negligence of adding anti-freeze will cause the cooling water remaining inside the engine to be frozen
and expanded to damage the engine parts.
2) Remove the mud, dust and oil deposit and clean the outside.
3) Perform the nearest periodic inspection before the storage.
4) Drain or fill the fuel oil fully to prevent condensation in the fuel tank.
5) Disconnect the battery cable from the battery negative (-) terminal.
6) Cover the silencer, air cleaner and electric parts with PVC (Poly Vinyl Chloride) cover to prevent
water and dust from depositing or entrance.
7) Select a well-ventilated location without moisture and dust for storage.
8) Perform recharging once a month during storage to compensate for self-discharge.
9) When storing an engine for long time, run the engine periodically according to the following
procedure because the rust occurrence inside the engine, the rack agglutination of the fuel pump,
and so on are likely to occur. (In case that the engine is equipped with a boat.)
a) Replace the lube oil and the filter before the engine running.
b) Supply fuel if the fuel in the fuel tank was removed, and bleed the fuel system.
c) Confirm that there is the coolant in the engine.
d) Operate the engine at the low idling speed for about five minutes. (If it can be done, once a
month)
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2. Inspection and adjustment