Honda EB4000 Owner's Manual page 27

Spark arrester maintenance
bxw If the generator has been running, the muffler will be very hot.
Allow it to cool before proceeding.
CAUTION: The spark arrester must be serviced every 100 hours to maintain
its efficiency.
1. Loosen the bolts and nuts and remove the muffler.
2. Loosen two 8 mm bolts to remove the exhaust pipe.
3. Check the muffler exhaust port for carbon deposits; clean if necessary.
4. Remove the spark arrester from the muffler.
Clean the screen and inspect it for damage. Replace if necessary.
5. Install the spark arrester in the muffler.
Install the muffler and gasket and tighten the bolts and nuts securely.
m NUTS
/
MUFFLER PROTECTOR
V
6 mm BOLTS
EXHAUST PIPE
MUFFLER
SPARK'ARRESTER
8 mm BOLTS
23