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15

Draining the Fuel Tank and Carburetor 

1. Place an approved gasoline container below the carburetor drain 

tube, and use a funnel to avoid spilling fuel. Turn the fuel valve to 
the ON position.

 

2. Locate the carburetor drain screw in the access hole on the left 

rear side. 

It helps to hold a flashlight 
under the snowthrower 
between the shroud and 
engine shinning up to the 
carburetor bowl.

3. Use a long, flat-tip screwdriver 

to loosen (don’t remove) the 
drain screw until fuel starts to 
drain.

Drain until the fuel tank is 
empty, and then tighten the 
drain screw.

Engine Oil

1. Change the engine oil (

page 12

).

2. Remove the spark plug 

(

page 12

).

3. Pour 1 - 2 teaspoons (5 ~ 10 cc) 

of clean engine oil into the 
cylinder.

4. Pull the starter rope slowly 

several times to distribute the oil.

5. Inspect, adjust, and reinstall the 

spark plug (

page 12

).

6. Pull the starter grip until 

resistance is felt. This will close 
the valves and protect the engine from internal corrosion.

Lubrication

Apply a few drops of oil or a small amount of grease to the following 
parts for lubrication and rust prevention.

PLACING IN STORAGE

If your snowthrower will be stored with gasoline in the fuel tank and 
carburetor, it is important to reduce the hazard of gasoline vapor 
ignition. Select a well-ventilated storage area away from any 
appliance that operates with a flame, such as a furnace, water heater, 
or clothes dryer. Also avoid any area with a spark-producing electric 
motor, or where power tools are operated.

If possible, avoid storage areas with high humidity, because it 
promotes rust and corrosion.

Unless all fuel has been drained from the fuel tank, leave the fuel 
valve in the OFF position (

page 6

) to reduce the possibility of fuel 

leakage.

Place the snowthrower on a level surface. Tilting can cause fuel or oil 
leakage.

With the engine and exhaust system cool, cover the snowthrower to 
keep out dust. A hot engine and exhaust system can ignite or melt 
some materials.

Do not use sheet plastic as a dust cover. A nonporous cover will trap 
moisture around the snowthrower, promoting rust and corrosion.

REMOVAL FROM STORAGE

Check your snowthrower as described in 

BEFORE OPERATION

 

(

page 7

).

If the fuel was drained during storage preparation, fill the tank with 
fresh gasoline. If you keep a container of gasoline for refueling, be 
sure that it contains only fresh gasoline. Gasoline oxidizes and 
deteriorates over time, causing hard starting.

If the cylinder was coated with oil during storage preparation, the 
engine may smoke briefly at startup. This is normal.

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 flames away.

• Handle fuel only outdoors.

• Wipe up spills immediately.

DRAIN SCREW 

Located inside 
the shroud 
3-3/4 inches.

DRAIN SCREW

CHUTE 
TENSION BOLTS

AUGER CLUTCH 
LEVER

AUGER 
SHAFT 
BEARINGS

G

G

G

CHUTE HINGE PIN

H

Summary of Contents for Harmony HS520A

Page 1: ...Safety Labels on the snowthrower Instructions how to use this snowthrower correctly and safely Safety Messages preceded by a safety alert A symbol and one of three signal words DANGER WARNING or CAUTION These signal words mean Each message tells you what the hazard is what can happen and what you can do to avoid or reduce injury Damage Prevention Messages You will also see other important messages...

Page 2: ...keep other flames and sparks away Always store gasoline in an approved container Turn Engine Off When Not Operating the Snowthrower If you need to leave the snowthrower for any reason even just to inspect the area ahead always turn the engine off Operation on Slopes To avoid overturning be careful when changing the direction of the snowthrower while operating it on a slope Do not use the snowthrow...

Page 3: ...ull the clutch cable enough to insert the Z fitting on the cable through the auger clutch lever as shown here Check the lever free play as shown on page 13 KEEP HANDS OUT OF DISCHARGE CHUTE WHILE ENGINE IS RUNNING DANGER HOT MUFFLER CAN BURN YOU Stay away if engine has been running CAUTION KEEP HANDS AND FEET AWAY FROM AUGER WHILE ENGINE IS RUNNING DANGER READ OWNER S MANUAL BEFORE OPERATING DO NO...

Page 4: ... screws and 6 mm self locking nuts Make sure the screws go on the inside and the nuts on the outside Tighten the nuts securely HEX NUT TORQUE 7 ft lbs 10 N m 5 Lift the spark plug door and attach the spark plug cap to the spark plug 6 Remove any packing material from the side of the snowthrower HS520A FLANGE NUT CURVED HEAD BOLT STARTER BRACKET HS520AS ELECTRIC STARTER BRACKET FLANGE NUT CURVED HE...

Page 5: ...amount of oil left in the engine varies 3 Add regular unleaded fuel to the fuel tank The fuel capacity is 1 37 US quarts 1 3 liters See page 11 BEFORE USE All operators of the snowthrower must read the following chapters before using the snowthrower SNOWTHROWER SAFETY page 2 CONTROLS page 6 BEFORE OPERATION page 7 OPERATION page 8 MAINTENANCE SCHEDULE page 11 CONTROL LOCATIONS UPPER LIMIT CHUTE GU...

Page 6: ...ton is used to operate the electric starter when a household extension cord is plugged into the starter box Starter Grip Pull this grip to start the engine Choke Knob The choke knob is used to open or close the choke CLOSED is used when the engine is cold The OPEN position provides the correct fuel mixture for operation after the engine has warmed up and for starting a warm engine Chute Guide Hand...

Page 7: ...heck the scraper blade for wear Replace if necessary page 14 Look for signs of damage Check that all nuts bolts screws hose connectors and clamps are tightened Keep all shields and covers in place while operating the snowthrower Check the Engine Check the oil level page 12 Check the fuel level page 11 Starting with a full tank will help to eliminate or reduce operating interruptions for refueling ...

Page 8: ...ilable to the starter box first and then to a 120 volt ac outlet Use an outdoor power cord with a power rating of no less than 15 amps Do not connect and disconnect the power cord with wet hands Do not use in the rain Be sure to hold the plug when disconnecting the power cord from the electrical outlet or starter box Do not disconnect by pulling on the power cord b Turn the engine switch to the ON...

Page 9: ...snowthrower over to the area to be cleared 2 Use the chute guide handle page 6 to adjust the direction for the discharged snow to travel 3 Engage the auger clutch lever The auger will begin to spin 4 Tilt the snowthrower forward slightly with the handlebar to engage the auger into the snow The auger will then pull the snowthrower forward and discharge the snow 5 To stop lower the handlebar slightl...

Page 10: ...dividual using parts that are certified to EPA standards MAINTENANCE SAFETY Some of the most important safety precautions follow However we cannot warn you of every conceivable hazard that can arise in performing maintenance Only you can decide whether or not you should perform a given task Safety Precautions Make sure the engine is off before you begin any maintenance or repairs This will elimina...

Page 11: ...uel section of the STORAGE chapter page 14 for additional information regarding fuel deterioration Never use stale or contaminated gasoline or an oil gasoline mixture Avoid getting dirt or water in the fuel tank To refuel remove the fuel tank cap and fill the tank with gasoline to the shoulder of the filler neck Refuel carefully to avoid spilling fuel Do not overfill After refueling tighten the fu...

Page 12: ...neral use Other viscosities shown in the chart may be used when the average temperature in your area is within the indicated range The SAE oil viscosity and service classification are on the API label on the oil container Honda recommends that you use API service category SJ or later oil or equivalent Spark Plug Service To ensure proper engine operation the spark plug must be properly gapped and f...

Page 13: ...t The scraper blade thickness and adjustment determine the clearance between the rubber paddles and the ground Inspection 1 Turn the engine switch and fuel valve to the OFF position and disconnect the spark plug cap so the engine cannot be accidentally started 2 Examine the scraper blade and verify it contacts the ground evenly If it does not adjust the scraper blade See Scraper blade adjustment b...

Page 14: ... Fuel NOTICE Depending on the region where you operate your equipment fuel formulations may deteriorate and oxidize rapidly Fuel deterioration and oxidation can occur in as little as 30 days and may cause damage to the carburetor and or fuel system Please check with your servicing dealer for local storage recommendations Gasoline will oxidize and deteriorate in storage Old gasoline will cause hard...

Page 15: ...furnace water heater or clothes dryer Also avoid any area with a spark producing electric motor or where power tools are operated If possible avoid storage areas with high humidity because it promotes rust and corrosion Unless all fuel has been drained from the fuel tank leave the fuel valve in the OFF position page 6 to reduce the possibility of fuel leakage Place the snowthrower on a level surfa...

Page 16: ...oken or not on the pulleys See you servicing Honda snowthrower dealer Possible cause Correction Fast ground speed puts excessive load on the engine Reduce your walking speed Wet deep snow puts an excessive load on the engine Reduce the snowthrowing swath Discharge chute is restricted Clear the discharge chute of obstructions page 9 Spark plug cap is not secure Make sure the spark plug cap is secur...

Page 17: ...on the air fuel mixture will be too lean for low altitude use Operation at altitudes below 5 000 feet 1 500 meters with a modified carburetor may cause the engine to overheat and result in serious engine damage For use at low altitudes have your servicing dealer return the carburetor to original factory specifications EMISSION CONTROL SYSTEM Source of Emissions The combustion process produces carb...

Page 18: ...to compare the emissions performance of available engines The lower the Air Index the less pollution The durability description is intended to provide you with information relating to the engine s emission durability period The descriptive term indicates the useful life period for the engine s emission control system See your EMISSION CONTROL SYSTEM WARRANTY page 21 for additional information SPEC...

Page 19: ...our snowthrower Date of purchase Your name address and telephone number A detailed description of the problem Honda Publications These publications will give you additional information for maintaining and repairing your snowthrower Shop Manual This manual covers complete maintenance and overhaul procedures It is intended to be used by a skilled technician Available through your Honda dealer or vis...

Page 20: ...ranty gives you specific legal rights and you may also have other rights which vary from state to state Honda Accessories Replacement Parts And Apparel This warranty is limited to Honda Power Equipment parts accessories and apparel when distributed by American Honda Motor Co Inc 4900 Marconi Drive Alpharetta Georgia 30005 8847 To Qualify for This Warranty 1 The accessories replacement parts or app...

Page 21: ...onda approved replacement parts may be used in the performance of any warranty repairs and must be provided without charge to the owner The use of replacement parts not equivalent to the original parts may impair the effectiveness of your engine emission control system If such a replacement part is used in the repair or maintenance of your engine and an authorized Honda dealer determines it is def...

Page 22: ...NOTES ...

Page 23: ...TER ONLINE www HondaPowerEquipment com commercial rental users check one private homeowner use for hire use Owner s Last Name Company Name Address City Date of Purchase First Name Telephone State ZIP Code Application Commercial Non commercial Rental y R Serial number professional use Dealer Store ZIP code Dealer Store number If available MONTH YEAR DAY E mail address Dear Honda Customer Thank you ...

Page 24: ...t It s that simple You ll receive e mail confirmation of your registration 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 BUSINESS REPLY MAIL FIRST CLASS MAIL ALPHARETTA GA PERMIT NO 117 POSTAGE WILL BE PAID BY ADDRESSEE ...

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