7-1
Chapter 7
LONG-TERM STORAGE
The following describes the method to store the
engine in a non-operable condition for more than
three months and the method for storing the engine
in an operable condition for more than three
months.
If the engine is not properly prepared for a long-
term storage of more than three months, internal
engine parts can rust and become damaged. Be
sure to follow the directions below when storing the
engine for an extended period of time.
Storing Engine in Non-Operable
Condition for More Than 3 Months
Preparation for Storage
1 Drain engine oil, and pour rust-preventive oil
(NP-10-2) into the engine.
2 Prepare a fuel mixture containing 50% rust-pre-
ventive oil (NP-9), and pour it into the fuel tank.
3 Operate the engine at a speed of 500 to 600
min
-1
(idling) for 5 to 10 minutes under no load.
4 Immediately before stopping the engine, spray
volatile corrosion inhibitor (V.C.I.) through the
inlet side to prevent rust on the air intake sys-
tem.
5 With the engine not in operation, drain the fuel
mixture from the fuel tank.
6 Apply rust-preventive oil (NP-3) liberally on the
exposed sections of the machine.
7 Seal air inlet, exhaust outlet, breather and other
openings with adhesive cloth tape.
8 Cover the entire engine.
Note:(a) Store the engine in a well-ventilated indoor
location.
(b) Coolant does not need to be drained since
it contains long life coolant. (Add long life
coolant to increase the concentration
between 30 and 60%.)
(c) Post a sign at an easily noticeable location
to warn that the rust-preventive oil in the
engine must be replaced with engine oil
and the fuel tank must be filled with fuel
before operating the engine.
(d) New engine oil may be used in place of
rust-preventive oil (NP-10-2).
Maintenance during Storage
Charge the battery once a month.
After checking proper electrolyte level in the bat-
tery, charge the battery.
Using Engine after Storage
1 Remove the cover from the engine.
2 Remove sealing tapes from the openings of the
engine.
3 Drain rust-preventive oil, and pour appropriate
engine oil.
Note: Regarding engine oil, refer to "Engine Oil" (4-
4).
4 Prepare the engine for operation by following
the directions in "Preparation for Operation of
New or Overhauled Engine" (3-1).
5 Start the engine.
Note: With regaes to starting the engine, refer to
"Normal Engine Operation" (3-8).
6 Conduct a warm-up operation to circulate oil
throughout the engine.
7 Apply load and increase the engine speed to the
rated speed.
Table 7-1 Recommended rust-preventive
oil and corrosion inhibitor
JIS No.
Recommended
product
Application
K2246
NP-3
Nippon Oil Corpo-
ration
Anti Rust P-1400
Prevention of
rust on
exposed
machine sur
-
faces
NP-9
Nippon Oil Corpo-
ration
Anti Rust P-2100
Prevention of
rust on fuel
system
NP-10-2
Nippon Oil Corpo-
ration
Anti Rust P-230
Prevention of
rust on lubri
-
cating sys-
tem
Z1519
-
Ryoukou Kagaku
V.C.I.Diana
volatile corrosion
inhibitor
Prevention of
rust on air
intake sys
-
tem
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