HONDA HHT25S - Manual (Page 17)

17
Spark Arrester Service
The spark arrester must be serviced every 100 hours to keep it
functioning as designed.
If the engine has been running, the muffler will be very hot. Allow the
muffler to cool before servicing the spark arrester.
1. Remove the 5 x 12 mm hex bolt and top cover.
2. Remove the two 4 x 6 mm self-tapping screws from the spark
arrester, and remove the spark arrester from the muffler.
3. Use a brush to remove carbon deposits from the spark arrester
screen. Be careful to avoid damaging the screen.
The spark arrester must be free of breaks and holes. Replace the
spark arrester if it is damaged.
4. Install the spark arrester, top cover, and 5 x 12 mm hex bolt and
tighten securely.
FUEL SYSTEM
Refueling
This engine is certified to operate on unleaded gasoline with a pump
octane rating of 86 or higher.
You may use regular unleaded gasoline containing no more than 10%
ethanol (E10) or 5% methanol by volume. In addition, methanol must
contain cosolvents and corrosion inhibitors. Use of fuels with content
of ethanol or methanol greater than shown above may cause starting
and/or performance problems. It may also damage metal, rubber, and
plastic parts of the fuel system. Engine damage or performance
problems that result from using a fuel with percentages of ethanol or
methanol greater than shown above are not covered by warranty.
If your equipment will be used on an infrequent or intermittent basis,
please refer to the fuel section of the STORAGE chapter (page 24) for
additional information regarding fuel deterioration.
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.
Never use stale or contaminated gasoline or an oil/gasoline mixture.
Avoid getting dirt or water in the fuel tank.
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.
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.
NOTICE
Fuel can damage paint and plastic. Be careful not to spill fuel when
filling your fuel tank. Damage caused by spilled fuel is not covered
under warranty.
5/32 in (4 mm) HEX WRENCH
(commercially available)
TOP COVER
5 x 12 mm
HEX BOLT
MUFFLER
SPARK
ARRESTER
MUFFLER
4 x 6 mm
SELF-TAPPING
SCREWS
SPARK ARRESTER SCREEN
B WARNING
Gasoline is highly flammable and explosive.
You can be burned or seriously injured when handling fuel.
• Stop the engine and keep heat, sparks, and flame away.
• Handle fuel only outdoors.
• Wipe up spills immediately.
FUEL
TANK CAP
MAXIMUM
FUEL
LEVEL
FUEL
TANK