Onan MDJF Series Operator's Manual And Parts Catalog page 19

FIGURE IS. OPERATING CYCLE
seconds. II it becomes necessary to use an additional
source ol power to start the unit — use a 12volt battery
connected in parallel.
AUTOMATIC STARTING AND STOPPING
Separate controls may be used for automatic start and stop,
but must provide engine pre-heating.
The automatic control has a time delay relay to pre-heat
glow plugs and the manifold heater for about 20-seconds
before cranking occurs. Remove the jumper in the unit's
control box which connects terminal H (heater) to terminal 3
("start circuit') and connect separate-control pre-heat circuit
to the set H terminal when installing the control. The time
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delay relay also delays engagement of the starter when load
is re-applied before the engine stops completely.
STOPPING
(1) Push start-stop switch to stop position.
(2) Release switch when unit stops. If stop circuit fails,
close fuel valve.
APPLYING LOAD
If practicable, allow set to warm up before connecting a
heavy load. Continuous generator overloading may cause high
operating temperatures that can damage the windings. The
generator can safely handle an overload temporarily, but for
normal operation, keep the load within nameplate rating. The
exhaust system may form carbon deposits during operation at