Kohler COM7.5 Service Manual page 30

D
Is fuel pressure regulator okay?
* Adjusting the fuel system may void the emissions certification. Only trained and authorized service technicians should adjust
the fuel system. See Section 4.5.4.
20 Section 3 General Troubleshooting
Lacks Power or Runs Erratically, continued
Is fuel solenoid
and wiring okay?
Yes
Verify that output pressure to
engine is at zero—the engine
must draw gas from regulator.
Yes
Check the fuel adjustment using
an oxygen sensor. See Section
4.5. Is the fuel adjustment
correct?
Yes
Test the ignition system. See
the Engine Service Manual.
Ignition problem?
No
Check the throttle linkage.
See Section 4.2. Throttle
linkage binding?
No
Check carburetor. See the
Engine Service Manual for
carburetor service
information.
Repair/replace faulty
No
components.
No Replace pressure regulator.
Adjust fuel
No
metering valve.*
Repair/replace ignition
Yes
components as needed.
Repair throttle linkage.
Yes
TP-6120 5/02