Honda WT20X Owner's Manual page 16

2. Check the fuel level.
Use automotive unleaded gasoline with a Research Octane Number of 91 or
higher (a Pump Octane Number of 86 or higher).
Fuel specification(s) necessary to maintain the performance of the emissions
control system: E10 fuel referenced in EU regulation.
Never use gasoline that is stale, contaminated, or mixed with oil. Avoid getting
dirt or water in the fuel tank.
• Gasoline is extremely flammable and is explosive under certain
conditions.
• Refuel in a well-ventilated area with the engine stopped. Do not smoke
or allow flames or sparks in the refueling area or where gasoline is
stored.
• Be careful not to spill fuel when refueling. Spilled fuel or fuel vapor may
ignite. If any fuel is spilled, make sure the area is dry before starting the
engine.
• Avoid repeated or prolonged contact with skin or breathing of vapor.
KEEP OUT OF REACH OF CHILDREN.
CAUTION:
Gasoline substitutes are not recommended; they may be harmful to the fuel
system components.
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