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19

AVOIDING FUEL-RELATED PROBLEMS

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 

page 21

).

Follow These Precautions to Prevent Most Fuel-Related Problems

During the Normal Operating Season

Reason

Do not use gasoline containing more than 10% ethanol (E10). 
Not all automotive gasoline is safe to use in your snow blower.

A high level of ethanol in gasoline attracts water and can corrode 
or damage the fuel system and cause performance problems.

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.

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.

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.

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.

Keep your snow blower’s fuel tank full of fresh fuel when not in 
use. Turn the fuel valve OFF.

If the fuel tank is only partially filled, air in the tank will promote 
fuel deterioration.

3 to 4 Weeks Before Next Use

Reason

Keep your snow blower’s fuel tank full of fresh fuel when not in 
use. Turn the fuel valve OFF.

If the fuel tank is only partially filled, air in the tank will promote 
fuel deterioration.

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.

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.

1 to 3 Months Before Next Use

Reason

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. 

If the fuel tank is only partially filled, air in the tank will promote 
fuel deterioration.

Add fuel stabilizer to the snow blower tank according to the 
stabilizer manufacturer’s instructions.

Fuel stabilizer will extend the life of gasoline, but it will not 
reconstitute stale gasoline.

Run the engine outdoors for 10 minutes.

To make sure treated gasoline has replaced untreated gasoline 
throughout the fuel system.

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.

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.

More Than 3 Months Before Next Use

Reason

Drain the fuel following the procedure on 

page 14

. Or start the 

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.

All fuel stabilizers have a shelf life. It is good practice to empty 
the fuel system for long term inactivity.

We recommend Pro Honda Fuel Stabilizer, that has improved formulation with added corrosion protection (

page 20

).

Summary of Contents for HS720A

Page 1: ...uretor 14 Lubrication 15 Cleaning 15 Storage Location 15 Removing From Storage 15 TROUBLESHOOTING 15 Electric Starter Will Not Operate 15 Starter Operates But the Engine Will Not Start 15 Engine Runs...

Page 2: ...ortant Message to Parents The safety of your children is very important to Honda Snow blowers are tools not toys As with any equipment bad judgments can result in serious injuries Your child must be b...

Page 3: ...tarting the Engine 9 Stopping the Engine 10 SERVICING YOUR SNOWTHROWER Maintenance Safety 10 Maintenance Schedule 11 Oil Change 11 Spark Plug 12 Auger 12 TRANSPORTING 14 STORAGE Fuel 14 Oil 14 Cleanin...

Page 4: ...blower is shipped WITHOUT OIL in the engine 2 With the snow blower on a level surface remove the oil filler cap dipstick 3 Add oil from the included bottle of oil into the oil filler opening to the t...

Page 5: ...ect the area before operating the snow blower Anything that can be picked up by the auger blades and thrown is a potential hazard to you and others Look for things like stones sticks nails and wire an...

Page 6: ...the snow discharge chute becomes clogged stop the engine and disconnect the spark plug cap Use a wooden stick to remove the obstruction Never put your hand into the snow discharge chute while the eng...

Page 7: ...ower s exhaust contains poisonous carbon monoxide gas which can collect rapidly in an enclosed or partially enclosed area and cause illness or death Clearing a Clogged Discharge Chute Never use your h...

Page 8: ...dle UP or DOWN to change the distance of snow discharge Move guide handle RIGHT to direct snow discharge to the left Move guide handle LEFT to direct snow discharge to the right Remote Chute Guide Con...

Page 9: ...back against the starter bracket Return it gently to prevent damage Do not pull the starter grip while the engine is running The starter could be damaged 4 Let the engine warm up for several minutes I...

Page 10: ...ine parts or their equivalents for repair and replacement Maintenance replacement or repair of the emission control devices and systems may be performed by any engine repair establishment or individua...

Page 11: ...he drain plug using a new drain plug washer 4 After draining take the oil to your local recycling center or service station Do not throw it in the trash pour it on the ground or pour it down a drain 5...

Page 12: ...k plug seats If installing a new spark plug tighten 1 2 turn after the spark plug seats If you own a torque wrench tighten the spark plug to the specified torque TORQUE 14 ft lb 20 N m NOTICE A loose...

Page 13: ...raper blade Replace the scraper blade if it is less than 1 16 in 2 mm thick See Replacement on this page Adjustment 1 Turn the engine switch and fuel valve to the OFF position and disconnect the spark...

Page 14: ...your snow blower trouble free and looking good To help keep rust and corrosion from impairing your snow blower s function and appearance and to make the engine easier to start after storage follow the...

Page 15: ...nonporous cover will trap moisture around the snow blower promoting rust and corrosion Removing From Storage Check your snow blower as described in BEFORE OPERATION page 5 If the cylinder was coated w...

Page 16: ...now throwing swath Discharge chute is restricted Clear the discharge chute of obstructions page 7 Spark plug cap is not secure Make sure the spark plug cap is securely connected Improper electrode gap...

Page 17: ...lems That May Affect Emissions If you are aware of any of the following symptoms have your engine inspected and repaired by your servicing dealer Hard starting or stalling after starting Rough idle Mi...

Page 18: ...tinuous operating time 1 0 hr Model GC190 Type 4 stroke overhead cam single cylinder air cooled Displacement 11 4 cu in 187 cc Bore and stroke 2 71 x 1 97 in 69 0 x 50 0 mm Compression ratio 8 5 1 Ign...

Page 19: ...mote fuel deterioration 3 to 4 Weeks Before Next Use Reason Keep your snow blower s fuel tank full of fresh fuel when not in use Turn the fuel valve OFF If the fuel tank is only partially filled air i...

Page 20: ...ns These publications will give you information for maintaining and repairing your snow blower Owner s Manual Keep this owner s manual handy so you can refer to it at any time Consider this owner s ma...

Page 21: ...llow limitations on how long an implied warranty lasts and or do not allow the exclusion or limitation of incidental or consequential damages therefore the above exclusions and limitations may not app...

Page 22: ...epairs and must be provided without charge to the owner A list of warranted parts is shown in the table below All emission related parts are under warranty for the remainder of the warranty period Nor...

Page 23: ...rd shown below Complete and submit the on line form at powerequipment honda com Scan the QR code below and then complete and submit the online form commercial rental users check one private homeowner...

Page 24: ...lick Submit It s that simple Power Equipment Division American Honda Motor Co Inc 4900 Marconi Dr Alpharetta GA 30005 9956 NO POSTAGE NECESSARY IF MAILED IN THE UNITED STATES Product Registration BUSI...

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