Honda GX610 Owner's Manual page 41

SERVICING YOUR HONDA ENGINE
2. Use a brush to remove carbon deposits from the spark arrester
screen. Be careful to avoid damaging the screen.
The spark arrester must be free of breaks and holes. Replace the
spark arrester if it is damaged.
HIGH-MOUNT MUFFLER TYPE SIDE-MOUNT MUFFLER TYPE
SPARK ARRESTER SCREEN
3. Install the spark arrester, and muffler protector in the reverse order
of disassembly.
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