8. Fuel system
140
Note) With (5) Speed Ramping biased to counterclock-
wise direction, a symptom of overshoot or hunting
can occur.
3) Start cranking the engine.
5. Rated speed & Idle speed
1) Rated speed adjustment.
Note) After engine startup, remove the connecti
on
be
tween terminals G and M (with idle switch OFF)
Note) Under no load condition, adjust Speed. Clockwise):
RPM increase/counterclockwise RPM decrease
2) Idle speed adjustment
Note) With idle switch ON again, set the engine speed
at 800 rpm by (6) Idle potentiometer.
Note) Reason for adjustment: To adjust pre-heat levels
after engine start up or the initial fuel amount at
engine start up
Note) Recommended position: Between the 12 and 3
o'clock positions. Though varying by engine model
or rated RPM, it is recommended to set the RPM
as 800RPM.
Note) Possible problems: Decreasing cold start perfor-
mance and the excessive use of fuel during the
warm-up phase.
6. Governor performance adjustment
1) Remove the connection between terminals G and M
(with idle switch OFF). Once the engine reaches r
un
s
peed, adjust the performance of governor.
DV2213196B
2) Gain adjustment.
Note) Turn (2) Gain clockwise until instability develops at
no load.
Note) Gradually move (2) Gain counterclockwise until
stability returns.
Note) Move (2) Gain counterclockwise further by around
20 minutes (10°) to ensure stable performance.
3) Stability adjustment.
Note) Turn (3) Stability clockwise at no load until insta-
bility develops.
Note) Gradually move (3) Stability counterclockwise until
stability returns.
Note) Move (3) Stability counterclockwise further by
around 20 minutes (10°) to ensure stable perfor-
mance.
7. Accessory adjustment
DV2213196C
1) Run Lamp ON
Note) At the rated speed, turn (10) Run counterclockwis
e
u
ntil the Run Lamp is on.
Note) Move (10) Run counterclockwise further by 90° to
prevent the Run Lamp from flickering.
2) Crank Lamp ON
Note) At the idle speed, turn (10) Crank counterclockwise
until the Crank Lamp is on.
Note) Move (10) Crank counterclockwise further by 90° to
prevent the Crank Lamp from flickering.
3) Overspeed Lamp ON
Note) At the rated speed, as pressing the Test button,
gradually turn (9) Over Speed counterclockwise
until the Overspeed Lamp is on and the engine is
shut off simultaneously.
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