PROCEDURES FOR PLACING THE
ENGINE IN LONG-TERM
STORAGE
Before storing the engine for a long period of
time (more than 3 months), perform the fol-
lowing procedures to prevent formation of
rust. If the storage period is short, follow the
maintenance procedures for the engine as
described in the previous paragraph.
Lubricating system
Drain the engine oil, pour the specified
amount of rust preventive oil into the oil pan,
and then run the engine under no load at
approximately 1,500 rpm for about 10 min-
utes. Stop the engine, and seal all the open-
ings of the lubricating system with sealing
tape.
For a greater rust preventing effect, perform
this operation in combination with the rust
preventing procedure for the fuel system and
cooling system.
Fuel system
Drain fuel from the fuel system, and pour the
mixed fuel (the ratio of fuel to rust preventing
oil should be 1 : 1) into the fuel tank. Operate
the engine under no load at 1,500 rpm for
about 10 minutes. Stop the engine, drain the
mixed fuel, and then seal all of the openings
in the fuel system (such as the breather of the
fuel tank) with sealing tape.
Cooling system
Flush the cooling system, and pour antifreeze
or an anti-rust agent into the cooling water.
Run the engine under no load at 1,500 rpm
for about 10 minutes. Stop the engine, and
seal all of the openings in the cooling system
(such as overflow pipe, etc.) with sealing
tape. If antifreeze is used, keep the cooling
water in the system. If an anti-rust agent is
used, thoroughly drain the cooling water
before sealing.
When using antifreeze, pay attention to the
freezing point of coolant and choose a mix-
ing ratio of at least 30%, a mixing ratio of
less than 30% provides only a limited rust pre-
venting effect. Note that the anti-rust agent
will freeze when the temperature falls below
0°C (32°F). In such event, either thoroughly
drain the cooling water or use antifreeze.
Combustion chamber
After completing the rust preventive proce-
dure, allow the engine temperature to drop to
room temperature. Then disconnect the air
cleaner from the EFI, and spray or pour rust
preventing oil into the combustion chamber.
Next, disconnect the high tension cable from
the spark plugs, turn the ignition switch to the
“START” position, and crank the engine five
to ten times, and than install the
high tension cables and air cleaner.
Engine exterior
Using a petroleum solvent, remove dirt and
oil from the uncoated metal surfaces of the
engine (intake manifold, exhaust manifold,
rocker cover, fan and governor belt grooves
of pulleys, etc.). Spray or apply anti-rust
agent to the cleaned surfaced. Do not apply
any type mineral or vegetable oil to the fan
and governor belt grooves of pulleys.
Others
1. Remove the fan belt and keep it loosened.
2. Seal the air intake hole of the air cleaner
and air outlet hole of the exhaust tube with
adhesive tape.
3. Wrap the open type generator with a
porous bag, and fasten the bag with a
rubber band or similar item.
4. If the engine is equipped with a clutch.
Spray an evaporative anti-rust agent into
the clutch housing, and seal the opening
with adhesive tape.
5. When storing the engine as a complete
assembly outdoors, cover it fully with a
porous water-proof sheet.
Do not use a vinyl sheet, because it lacks
porosity and retains water inside.
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