8. Fuel system
141
Note) With the adjustment above, the overspeed function
is triggered at around 115% of the rated speed.
8. Starting Fuel Adjustment (to minimize the engine'
s
e
xhaust smoke)
1) Turn on idle speed switch → Set the idlespeed at
800RPM → Turn (4) Starting Fuel counterclockwis
e
u
ntil the engine speed begins to fall → Move (4)
tarting Fuel clockwise further by 15° to stabilize the
engine speed.
9. When the engine won’t start
1) If there is no wrong wiring → Return all adjustment
s
t
o the "factory-set values" → Start up the engi
ne
a
gain.
On completion of all the adjustments, start up the
engine again to ensure the stable operation at
engine startup, at no load, and at load operation,
respectively.
In case the exhaust smoke is not thick, It is recom-
mended to place (4) Starting Fuel at the 5 o'clock
position. If (4) Starting Fuel is set too low, It may
be hard to start the engine and cause the speed
overshoot on engine startup, even resulting in
exceeding the preset overspeed value.
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