Honda EM1600X Owner's Manual page 24

Spark arrester maintenance
m 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 five 6 mm bolts to remove the muffler protedtor.
PROTECTOR
bolts
2. Remove the two 8 mm bolts at the exhaust pipe and the 8 mm bolt at the
muffler stay.
Remove the muffler and the spark arrester.
Two 8 mm bolts
MUFFLER
22