Fuel Recommendations - Honda Marine BF25A Owner's Manual

5. PRE-OPERATION CHECKS
Fuel Recommendations
Use unleaded gasoline with a pump octane rating of 86
or higher.
This engine is designed to operate on unleaded gasoline.
Unleaded gasoline produces fewer engine ans spark plug
deposits and extends exhaust system life.
Never use stale or contaminated gasoline or an oil/gasoline
mixture. Avoid getting dirt or water in the fuel tank.
Occasionally you may hear light "spark knock" or "ping-
ing" (metallic rapping noise) while operating under heavy
loads. This in no cause for concern.
If spark knock or pinging occurs at a steady engine speed,
under normal load, change brands of gasoline. If spark
knock or pinging persists, see an authorized Honda Marine
or Honda Outboard Motor dealer.
-1 Running the engine with persistent spark
knock or pinging can cause engine damage.
Running the engine with persistent spark knock or pinging
is misuse, and the Distributor's Limited Warranty does not
cover parts damaged by misuse.
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