Avoiding Fuel-Related Problems - Honda HS720AS Owner's Manual

When maintained properly, your Honda snow blower should provide years of trouble-free operation. This includes the fuel system.
However, gasoline can quickly deteriorate (in as little as 30 days), causing starting or running problems and, in some cases, damage to the
fuel system. Most fuel-related problems can be avoided by following the precautions listed below. Fuel system damage and engine
performance problems resulting from deteriorated fuel are not covered by the Distributor's Limited Warranty (see
Follow These Precautions to Prevent Most Fuel-Related Problems
During the Normal Operating Season
Do not use gasoline containing more than 10% ethanol (E10).
Not all automotive gasoline is safe to use in your snow blower.
Store gasoline in a clean, plastic, sealed container approved for
fuel storage.
Store your fuel supply container away from direct sunlight; if the
container has a vent, keep it closed.
Purchase only enough gasoline to last for 1 to 2 months (about
30 to 60 days).
If you purchase enough gasoline to last for more than 60 days,
add a fuel stabilizer to your storage tank when you fill it.
Keep your snow blower's fuel tank full of fresh fuel when not in
use. Turn the fuel valve OFF.
3 to 4 Weeks Before Next Use
Keep your snow blower's fuel tank full of fresh fuel when not in
use. Turn the fuel valve OFF.
Turn the fuel valve to the OFF position, start the engine and let it
run approximately 3 minutes until the carburetor is empty and the
engine stops.
1 to 3 Months Before Next Use
If you did not add fuel stabilizer to your fuel storage tank when
you filled it up, fill your snow blower's fuel tank with fresh
gasoline.
Add fuel stabilizer to the snow blower tank according to the
stabilizer manufacturer's instructions.
Run the engine outdoors for 10 minutes.
Turn the fuel valve to the OFF position, start the engine, and let it
run approximately 3 minutes until the carburetor is empty and the
engine stops.
More Than 3 Months Before Next Use
Drain the fuel following the procedure on
engine and let it run long enough to empty all the gasoline from
the entire fuel system, including the fuel tank. Do not allow
gasoline to remain in your snow blower for more than 3 months
(about 90 days) of inactivity.
We recommend Pro Honda Fuel Stabilizer, that has improved formulation with added corrosion protection

AVOIDING FUEL-RELATED PROBLEMS

page 14. Or start the
A high level of ethanol in gasoline attracts water and can corrode
or damage the fuel system and cause performance problems.
A clean plastic container will prevent rust and metallic
contaminants from entering the fuel system.
Gasoline will deteriorate faster when exposed to air and sunlight.
Gasoline deteriorates with age so try to avoid storing it for long
periods, especially in summer heat.
Fuel stabilizer will extend the shelf life of gasoline, but it will not
reconstitute stale fuel.
If the fuel tank is only partially filled, air in the tank will promote
fuel deterioration.
If the fuel tank is only partially filled, air in the tank will promote
fuel deterioration.
The small amount of gasoline in your engines carburetor will
deteriorate faster than the fuel in the fuel tank due to its small
volume and heat from the engine.
If the fuel tank is only partially filled, air in the tank will promote
fuel deterioration.
Fuel stabilizer will extend the life of gasoline, but it will not
reconstitute stale gasoline.
To make sure treated gasoline has replaced untreated gasoline
throughout the fuel system.
The small amount of gasoline in your snow blower's carburetor
will deteriorate faster than the fuel in the fuel tank due to its small
volume and heat from the engine.
All fuel stabilizers have a shelf life. It is good practice to empty
the fuel system for long term inactivity.
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Reason
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