Fuel Recommendations - Honda Marine BF75A Owner's Manual

4. PRE-OPERATION CHECKS
Fuel Recommendations
Use unleaded gasoline with a pump octane rating of 86
or higher.
These outboard motors are certified to operate on
unleaded gasoline. Unleaded gasoline produces fewer
engine and spark plug deposits and extends exhaust
system life.
Never use stale or contaminated gasoline or an oil/gaso-
line 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 is 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 Ma-
rine dealer.
Running the engine with persistent spark knock or
pinging can cause engine damage.
Running the engine with persistent spark knock or ping-
ing is misuse, and the Distributor's Limited Warranty
does not cover parts damaged by misuse.
47