Temporary Storage; Long Time Storage; If Weekly Operation Is Not Possible, Nor Convenient - Hobart JET-EX 4 Operation And Maintenance Manual

B. Temporary Storage
When storing the unit for one month, prepare as follows:
(1) Lubricate the unit completely in accordance with instructions in Section 2-2. This will include
changing engine oil, and filter elements.
(2) Make certain the cooling system antifreeze solution is adequate to protect below the lowest tem-
peratures expected during the storage period.
(3) Start the engine and operate at idle speed. With air cleaner removed, spray an engine preserv-
ative oil into the carburetor air intake for about two minutes. This oil should be SAE No. 10, formulated
for anti-rust and anti-corrosion protection. It should also be a high detergent-type that meets require-
ments for most severe (M.S.) service and Ford Specification M-4834-A.
(4) Throw the speed control switch to RATED RPM (up) position for a short burst of speed, then turn
the iginition switch off and allow the engine to come to a stop while continuing to spray oil into the car-
buretor air intake.
(5) Clean the exterior of the engine with fuel oil and dry with clean cloths and compressed air.
(6) Seal all engine openings. Use a waterproof, vaporproof material which is strong enough to resist
puncture damage from air pressure.
C. Long Time Storage
(1) Engine operation method
The unit may be stored for long periods with no special preparation if it is possible to operate the
engine once each week.
(a) Make certain that the cooling system is adequately protected.
(b) Start the engine once each week and operate at idle speed until coolant temperature has
reached at least 140 deg F (60 deg C). Operating time should be sufficiently long to keep the bat-
tery in a fully charged condition.
WARNING: MAKE CERTAIN OF ADEQUATE VENTILATION BEFORE STARTING
ENGINE
(c) Operate normal operating controls.
(2) If weekly operation is not possible, nor convenient, prepare the unit for storage as follows:
(a) Lubricate the unit in accordance with instructions in Section 2-1. Drain the crankcase com-
pletely and refill with engine preservative oil Ford Specification M-4834-A
(b) Drain the fuel tank and run the engine until the carburetor is empty. Pour about a gallon of un-
leaded, undyed gasoline in the fuel tank and operate the engine for at least 10 minutes. With the
engine running at idle speed and the air cleaner removed, treat the upper cylinders, valves, etc.,
by spraying an engine preservative oil into the carburetor air intake for about two minutes. Throw
the IDLE/GENERATE switch to GENERATE position for a short burst of speed, turn the ignition
off, and continue to spray oil into the carburetor until the engine stops.
(c) Drain engine oil. Drain fuel tank, carburetor and fuel line. Drain cooling system at bottom of ra-
diator and left side of engine block. Remove radiator cap so coolant will drain completely.
(d) Remove all grease and oil from exterior surfaces of engine.
May 20/89
OM-2049
1-2
Page 3