Fuel System; Refueling; Fuel Recommendations - Honda UMK431 Owner's Manual

SERVICING YOUR HONDA TRIMMER
FUEL SYSTEM
Refueling
Fuel tank capacities
UMK422: 0.48 US qt115.2 fl. oz (0.45 2)
UMK431: 0.69 US qt122.0 fl. oz (0.65 2)
Check the fuel level by looking through the
translucent fuel tank.
If the fuel level is low, refuel in a well-ventilated
area with the engine stopped. If the engine has
been running, allow it to cool first.
To refuel, rest the trimmer on the ground with the
fuel tank cap facing up, as shown. Remove the
fuel tank cap, and fill the tank with gasoline to the
bottom of the filler neck. Refuel carefully to avoid
spilling fuel. Do not overfill. There should be no
fuel in the filler neck. After refueling, tighten the
fuel tank cap securely.
Gasoline is highly flammable and
explosive.
You can be burned or seriously injured
when handling fuel.
Stop the engine and keep heat, sparks,
Handle fuel only outdoors.
Wipe up spills immediately.
and flame away.
Never refuel the engine inside a building where
gasoline fumes may reach flames or sparks. Keep
gasoline away from appliance pilot lights,
barbecues, electric appliances, power tools, etc.
Spilled fuel is not only a fire hazard, it causes
environmental damage. Wipe up spills
immediately.
Move at least 10 feet (3 meters) away from the
fueling source and site before starting the engine.
I
v
FUEL
TANK
FUEL TANK CAP
MAXIMUM
FUEL
LEVEL
Fuel Recommendations
Use unleaded gasoline with a pump octane
rating of 86 or higher.
These engines 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/gasoline mixture. Avoid getting dirt or water in
the fuel tank.
Occasionally you may hear a light "spark knock
or "pinging" (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 servicing dealer.
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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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