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LP Engine G430(3.0L) Governor System
High Engine Load
Figure 8-12 Under High Engine Load
When the engine is operating at high engine loads the
venturi vacuum will be lowered closer to atmos-pheric
pressure. This drop in vacuum causes the stabilizer
piston to move outward due to the pres-sure being
exerted on the governor valve by the governor spring
(figure 8-12). This condition allows the governor valve
to open further allowing addi-tional fuel and air into the
engine to maintain a constant engine speed.
Adjustment Procedures
Figure 8-13 Aisan Governor Assembly #7172730
When the engine is subjected to a load, the engine
speed must be 100 RPM or less than the engine
speed obtained under a no load condition. There must
not be any surging present.
Engine Speed
1. The engine must be warmed up to the normal
operating temperature.
2. Adjust the maximum engine speed to specification
by the following procedure.
When RPM is higher then specification:
Turn the ADJUSTING SCREW counterclockwise to
lower the engine RPMs to proper setting.
When RPM is lower then specification:
Turn the ADJUSTING SCREW BUSHING clock-wise
to increase the engine RPMs. If engine speed is now
above specification then turn the adjusting screw
counterclockwise to lower the engine RPM to proper
setting.
3. Install lock wire through holes in adjusting screw
and bushing to prevent screw from moving due to
engine vibration.
7226-400-014
7226-400-020
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