Long-Term Storage; Storing The Engine In An Inoperable Condition For 3 Months Or More; Preparation For Storage; Maintenance During Storage - Mitsubishi S6B Operation & Maintenance Manual

Chapter 9 LONG-TERM STORAGE
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 storing the engine for an extended period of time, be sure to follow the directions below.
Storing the engine in an inoperable condition
for 3 months or more

Preparation for storage

1. Drain the engine oil in-use, pour new oil.
2. Prepare a fuel mixture containing 50% rust-preventive oil (NP-9), and fill the fuel tank with it.
3. Operate the engine at a speed of 800 to 1000 min
4. Immediately before stopping the engine, spray volatile corrosion inhibitor (VCI) 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 sec-
tions with polyethylene sheet or processed polyethylene paper, and place desiccants 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 concentration to between
30 to 60%.)
(c) Post a sign at an easily noticeable place to warn that the fuel tank must be filled with fuel before operating
the engine for the first time after storage.
(d) Store the engine in a well-ventilated indoor area.
Recommended rust-preventive oil and corrosion inhibitor
Table 9-1 Recommended rust-preventive oil and corrosion inhibitor
JIS No.
K2246
Z1519

Maintenance during storage

Charge the battery once a month. First, check the battery electrolyte for correct level and then charge the battery.
Recommended product
Nippon Oil Corporation
NP-3
Anti Rust P-1600
Nippon Oil Corporation
NP-9
Anti Rust P-2400
Ryoukou Kagaku
- VCI Diana ND volatile

corrosion inhibitor

-1
(idling) for 5 to 10 minutes under no load.
Application
Prevention of rust on exposed
machine surfaces
Prevention of rust in fuel system
Prevention of rust in air intake
system
9-1