Page 4 of 6 ©2018 American Honda Motor Co., Inc.
6. CHECK THE SPARK ARRESTER SCREEN
Clean or replace as necessary. A badly clogged screen could
also be an indicator that the muffler passages are clogged or
reduced due to carbon buildup. Excess carbon buildup may
indicate high engine hours, operation with a restricted air
cleaner, or operating the generator in an enclosure.
If the spark arrester was heavily clogged, run the generator
outdoors on the load bank for 30 minutes at 50 ~ 60% load to
dynamically decarbon the combustion chamber. Let the
generator cool down, and then reinstall the spark arrester.
The spark arrester screen should be cleaned every 6 months
or 100 hours.
7. FUEL PRESSURE TEST
If the generator displays an E-0A code, surges under load, or surges and
stalls, the fuel system needs to be inspected.
Test the fuel pressure:
• Remove the fuel feed hose from the hose clip.
• Relieve the fuel pressure by disconnecting the injector-side,
quick-connect fitting.
• Attach the fuel pressure gauge.
TOOL: Fuel pressure gauge
P/N 074APJ-Z37A101
• Start the engine using the electrical starter and read the fuel pressure.
STANDARD:43 psi (294 kPa, 3.0 kgf/cm
2
)
• If the fuel pressure is lower than specified, inspect the fuel filter. If the
fuel filter is clean, contact Techline. The fuel filter should be changed
every 2 years or 1,000 hours.
• If the pressure is still low, replace the fuel pump. If the pressure is
normal, replace the fuel injector.
Refer to the EU7000is Shop Manual or the EU7000is section of the Generator Troubleshooting Guide for additional
information.
8. START AND LOAD TEST THE GENERATOR
Note any changes in the way the engine runs.
• If the problem is now resolved, be sure to note the hours and any stored error codes on the repair order.
• If a problem remains after the above steps have been taken, refer to the EU7000is Shop Manual or the EU7000is
section of the Generator Troubleshooting Guide to troubleshoot the generator. Perform the visual inspection (see
page 3) when removing the control panel and inverter.
• If the generator starts and runs but does not carry the rated load during the load bank test, check the engine
compression. Repair as necessary and repeat load bank test.
SPARK
ARRESTER
SCREEN
FUEL
PRESSURE
GAUGE
HOSE CLIP
FUEL FEED
HOSE
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