9-1
Chapter 9 LONG-TERM STORAGE
Long-term storage
The following describes how to store the engine in a
non-operable condition for three months or more and
in an operable condition for three months or more.
If the engine has been left unattended for three
months or more, the internal engine parts can rust,
and that may cause damage to the engine. When stor-
ing the engine for an extended period of time, be sure
to follow the directions below.
Storing the engine in a
non-operable condition
for 3 months or more
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 fill the fuel tank with it.
3.
Operate the engine at a speed of 800 to 1000
min
-1
(idling) for 5 to 10 minutes under no load.
4.
Immediately before stopping the engine, spray vol-
atile corrosion inhibitor (V.C.I.) through the inlet
port to prevent rust on the air intake system.
5.
With the engine stopped, drain the fuel mixture
from the fuel tank.
6.
Apply rust-preventive oil (NP-3) liberally on the
exposed sections of the machining.
7.
Seal the air inlet, exhaust outlet, breather and
other openings with an adhesive cloth tape.
8.
Loosen the V-belt.
9.
Wrap adhesive cloth tape on the terminals of the
starters and alternator, and seal the openings.
Cover these sections with polyethylene sheet or
processed polyethylene paper, and place desic-
cants in the polyethylene covers.
10.
Disconnect the cables from the battery terminals,
and charge the battery. Clean the terminals, apply
a thin coat of grease to the terminals, and store the
battery in a cool and dry room.
11.
Cover the entire engine.
Note :(a)
Store the engine in a well-ventilated indoor
area.
(b)
It is not necessary to drain coolant since it
contains LLC. (Add LLC to increase the con-
centration to between 30 and 60%.)
(c)
Post a sign at an easily noticeable place 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 for the first time after
storage.
(d)
New engine oil can substitute for rust-pre-
ventive oil (NP-10-2).
Recommended rust-preventive oil and
corrosion inhibitor
Maintenance during storage
Charge the battery once a month.
First, check the battery electrolyte for correct level and
then charge the battery.
Table 9-1
Recommended rust-preventive
oil and corrosion inhibitor
JIS No.
Recommended
product
Application
K2246
NP-3
Nippon Oil Corporation
Anti Rust P-1400
Prevention
of rust on
exposed
machine
surfaces
NP-9
Nippon Oil Corporation
Anti Rust P-2400
Prevention
of rust in
fuel system
NP-10-2
Nippon Oil Corporation
Anti Rust P-230
Prevention
of rust in
lubricating
system
Z1519
-
Ryoukou Kagaku
V.C.I. Diana volatile
corrosion inhibitor
Prevention
of rust in air
intake sys-
tem
