Alpha Technologies AlphaGen 3.5_5.0kW Kohler COM5 - Manual (Page 38)

TP-6482 8/06 38 Section 4 General Troubleshooting
Is fuel solenoid
and wiring okay?
No
Yes
Is fuel pressure regulator okay?
Verify that output pressure to
engine is at zero—the engine
must draw gas from regulator.
No Replace pressure regulator.
Yes
No
Yes
Lacks Power or Runs Erratically, continued
D
Adjust fuel
metering valve.*
Check the fuel adjustment using
an oxygen sensor. See Section
5.7. Is the fuel adjustment
correct?
* Adjusting the fuel system may void the emissions certification. Only trained and authorized service technicians should
adjust the fuel system. Use the test equipment specified in the test procedure in Section 5.7.
Check the throttle linkage.
See Section 5.4. Throttle
linkage binding?
Check carburetor. See the
engine service manual for
carburetor service
information.
Repair/replace ignition
components as needed. Yes
Test the ignition system. See
Section 5.5. Ignition problem?
Repair throttle linkage.
Yes
Repair/replace faulty
components.
No
No