Honda EX2200 Owner's Manual page 11

2. Check the fuel level.
Check the fuel gauge and refill the tank if the fuel level is low.
Your engine is designed to use any gasoline that has a pump
octane number (v) of 86 or higher, or that has a research
octane number of 91 or higher. Gasoline pumps at service station normally
display the pump octane number.
We recommend that you use unleaded fuel because it produces fewer
engine and spark plug deposits and extends the life of exhaust system
components.. .
Never use stale or contaminated gasoline or an oil/gasoline mixture. Avoid
getting dirt, dust or water in the fuel tank. U,se of a lower octane gasoline
can cause persistent "pinging" or heavy "spark knock" (a metallic rapp-
ing noise) which, if severe, can lead to engine damage.
CAUTION: If "spark knock" or "pinging" occurs at a ,steady engine
speed under normal load, change brands of gasoline. If spark knock or
pinging persists, consult your authorized Honda dealer. Failure to do so is
considered misuse, and damage caused by misuse is not covered by
Honda's Limited Warranty.
Occasionally you may experience light spark knock while operating under
heavy loads. This is no cause for concern, it simply means your engine is
operating efficiently.
After refuelling, be sure to tighten the fuel tank cap firmly.
Fuel tank capacity: 8.3 e(2.19 US gal)
FUEi TANK CAP
FUEL STRAINER
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