Honda EG1000Z Owner's Manual page 25

Spark plug service
Recommended spark plug: BR—4HS (NGK)
W14FR-U (ND)
To ensure proper engine operation, the spark plug must be properly gapped
and free of deposits.
1. Remove the spark plug cover.
2. Use the wrench supplied in the tool kit to remove the spark plug.
3. Visually inspect the spark plug. Discard it if the insulator is cracked or
chipped.
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