Portable Generator Repair G 3.7A;G/GS 5.6A;GS 8.5V;GS 9.7V
wc_tx000208gb.fm 59
6.16 Checking Engine Electronic Governor Speed (GS 8.5V and
GS 9.7V models)
Note:
The battery must be installed and have the appropriate voltage
(nine volts minimum) for the generator electronic control governor to
perform properly. If the generator starts but will not run at speed, check
battery voltage.
Running Check
To check the performance of the electronic governor perform the
following steps in order.
6.16.1 Start engine and check rpm. Top governed speed should be 3600 rpm.
6.16.2 Manually move throttle link to wide open throttle.Engine should not
exceed 4000 rpm (approximately).
6.16.3 With engine running at top governed speed, attach one end of a
jumper wire to the BLUE wire from the control module and attach other
end to a good ground.After 4 – 6 seconds engine speed should return
to idle (approximately 2200 rpm).
6.16.4 Remove jumper wire from ground. Engine should return to top
governed speed.
If engine does not slow to idle speed or does not return to top governed
speed, replace engine module.
Static Check
To determine whether a governor problem is being caused by the
control module or the actuator, perform the following static check.
A pair of jumper wires and a known good 12 volt battery are required.
Perform static check exactly in order shown.
6.16.1 Disconnect RED and GREEN wires from control module to actuator.
6.16.2 Attach jumper wires from battery to RED and GREEN wires of
actuator.
6.16.3 Attach 12 + (positive) to RED wire.
Attach 12 volt – (negative) to GREEN wire.
6.16.4 Actuator should move throttle lever to wide open position.
If actuator does not move, it is defective. Replace. If actuator moves
throttle to wide open position, the module is defective. Replace.
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