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The cooling fan securing nut should be tight enough so that when force
is applied to rotate the fan by pushing on the outer edge and blades
with the palm of your hand (protect the hand with a cloth or glove),
you should be able to turn the generator and engine without the fan
slipping on
the
shaft.
If
properly torqued and
fan still slips,
replace the lockwashers.
Recirculation of generator cooling air through the generator must be
avoided.
The generator compartment ventilation must be sufficient to
prevent generator air recirculation.
Insure
that
the
screened
endbell
inlet and
the
screened discharge
slots at the flywheel are not obstructed, preventing good air cir-
culation through the generator while it is running.
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