Husqvarna Snow Blower 524ST User Manual

524ST  
Owner's Manual  
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Do not put hands or feet near or under rotating parts.  
Keep clear of the discharge opening and front auger  
area at all times.  
Do not overload the machine capacity by attempting  
to clear snow at too fast a rate.  
Never operate the machine at high transport speeds  
on slippery surfaces. Look behind and use care when  
backing up.  
Exercise extreme caution when operating on or cross-  
ing gravel drives, walks or roads. Stay alert for hidden  
hazards or traffic.  
Never direct discharge at bystanders or allow anyone  
in front of the unit.  
After striking a foreign object, stop the engine (motor),  
remove wire from the spark plug, thoroughly inspect  
snow thrower for any damage, and repair the damage  
before restarting and operating the snow thrower.  
Disengage power to the auger/impeller when snow  
thrower is transported or not in use.  
Use only attachments and accessories approved by  
the manufacturer of the snow thrower (such as wheel  
weights,counterweights,cabs,tirechains,electricstart  
kits, etc.).  
If the unit should start to vibrate abnormally, stop the  
engine (motor) and check immediately for the cause.  
Vibration is generally a warning of trouble.  
Stop the engine (motor) whenever you leave the oper-  
ating position, before unclogging the auger/impeller  
housing or discharge chute and when making any  
repairs, adjustments, or inspections.  
Never operate the snow thrower without good visibility  
or light. Always be sure of your footing and keep a firm  
hold on the handles. Walk; never run.  
Do not overreach. Keep proper footing and balance at  
all times.  
When cleaning, repairing, or inspecting, make certain  
all controls are disengaged and the auger/impeller and  
all moving parts have stopped. Disconnect the spark  
plug wire and keep the wire away from the spark plug  
to prevent accidental starting.  
This snow thrower is for use on sidewalks, driveways  
and other ground level surfaces.  
Donotusethesnowthroweronsurfacesaboveground  
level such as roofs of residences, garages, porches or  
other such structures or buildings.  
Take all possible precautions when leaving the snow  
throwerunattended.Disengagetheauger/impeller,stop  
engine (motor), and remove key.  
MAINTENANCE AND STORAGE  
Do not run the engine (motor) indoors, except when  
starting the engine (motor) and for transporting the  
snow thrower in or out of the building.Open the outside  
doors.  
Check shear bolts and other bolts at frequent intervals  
for proper tightness to be sure the equipment is in safe  
working condition.  
Neverstorethesnowthrowerwithfuelinthetankinside  
a building where ignition sources are present such as  
hot water and space heaters, clothes dryers, and the  
like. Allow the engine (motor) to cool before storing in  
any enclosure.  
WARNING: Exhaust fumes are dan-  
gerous (containing CARBON MONOX-  
IDE,anODORLESSandDEADLYGAS).  
Always refer to operator’s guide instructions for im-  
portant details if the snow thrower is to be stored for  
an extended period.  
Do not clear snow across the face of slopes. Exercise  
extreme caution when changing direction on slopes.  
Do not attempt to clear steep slopes.  
Maintain or replace safety and instruction labels, as  
necessary.  
Neveroperatethesnowthrowerwithoutproperguards,  
plates or other safety protective devices in place.  
Run the snow thrower, with auger engaged, a few  
minutes after throwing snow to clear the machine and  
prevent freeze-up of the auger/impeller.  
Never operate the snow thrower near glass enclo-  
sures, automobiles, window wells, drop–offs, and the  
like without proper adjustment of the snow discharge  
angle. Keep children and pets away.  
CONGRATULATIONS on your purchase of a new snow  
thrower. Ithasbeendesigned,engineeredandmanufactured  
to give best possible dependability and performance.  
PRODUCT SPECIFICATIONS  
Gasoline Capacity 2.0 Quarts  
and Type:  
Unleaded Regular only  
Should you experience any problem you cannot easily  
remedy, please contact your nearest authorized service  
center/department. We have competent, well-trained tech-  
nicians and the proper tools to service or repair this unit.  
Oil Type  
(API-SF-SJ):  
SAE 30 (above 40°F)  
SAE 5W-30 or 10W-30 (0° to +40°F)  
SAE 0W-30 (below 0°F)  
Please read and retain this manual. The instructions will  
enable you to assemble and maintain your snow thrower  
properly. Always observe the “SAFETY RULES”.  
Oil Capacity:  
Spark Plug:  
21 Ounces  
Champion RN4C (Gap: .030")  
SERIAL NUMBER: ___________________________  
DATE OF PURCHASE: _______________________  
CUSTOMER RESPONSIBILITIES  
Read and observe the safety rules.  
THEMODELANDSERIALNUMBERSWILLBEFOUND  
ONADECALATTACHEDTOTHEREAROFTHESNOW  
THROWER HOUSING.  
Follow a regular schedule in maintaining, caring for  
and using your snow thrower.  
Follow the instructions underMaintenanceandStor-  
age” sections of this owner’s manual.  
YOUSHOULDRECORDBOTHSERIALNUMBERAND  
DATE OF PURCHASE AND KEEP IN A SAFE PLACE  
FOR FUTURE REFERENCE.  
3
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SAFETY RULES ........................................................ 2-3  
PRODUCT SPECIFICATIONS...................................... 3  
CUSTOMER RESPONSIBILITIES................................ 3  
WARRANTY................................................................ 32  
ASSEMBLY / PRE-OPERATION ............................... 5-7  
OPERATION ............................................................ 8-13  
MAINTENANCE..................................................... 14-15  
MAINTENANCE SCHEDULE ..................................... 14  
SERVICE AND ADJUSTMENTS ........................... 16-18  
STORAGE................................................................... 18  
TROUBLESHOOTING ................................................ 19  
REPAIR PARTS...................................................... 20-31  
PARTS PACKED SEPARATELY IN CARTON  
4
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ASSEMBLY / PRE-OPERATION  
Read these instructions and this manual in its entirety before you attempt to assemble or operate your new snow thrower.  
Your new snow thrower has been assembled at the factory with the exception of those parts left unassembled for shipping  
purposes. All parts such as nuts, washers, bolts, etc., necessary to complete the assembly have been placed in the parts  
bag. To ensure safe and proper operation of your snow thrower, all parts and hardware you assemble must be tightened  
securely. Use the correct tools as necessary to ensure proper tightness.  
REMOVE SNOW THROWER FROM CARTON  
SPEED  
1. Remove all accessible loose parts and parts boxes  
CONTROL  
from carton.  
ROD  
2. Cut down all four corners of carton and lay panels  
PLASTIC TIE  
flat.  
3. Remove all packing materials except plastic tie holding  
UPPER  
HANDLE  
speed control rod to lower handle.  
4. Remove snow thrower from carton and check carton  
thoroughly for additional loose parts.  
HANDLE  
KNOB  
HOW TO SET UPYOUR SNOW THROWER  
TOOL BOX (See Fig. 8)  
LOWER  
HANDLE  
A toolbox is provided on your snow thrower. The toolbox  
is located on top of the belt cover. Store the extra shear  
bolts, nuts and multi-wrench provided in parts bag in the  
toolbox.  
NOTE: The multi-wrench may be used for assembly of the  
chuterotatorheadtosnowthrowerandmakingadjustments  
to the skid plates.  
UNFOLD UPPER HANDLE  
1. Raiseupperhandletotheoperatingpositionandtighten  
handle knobs securely.  
INSTALL SPEED CONTROL ROD (See Figs. 1 and 2)  
FIG. 1  
1. Remove plastic tie securing rod to lower handle.  
SPEED CONTROL ROD  
2. Insert rod into speed control bracket and secure with  
retainer spring.  
RETAINER  
SPRING  
SPEED  
CONTROL  
BRACKET  
SPEED  
CONTROL  
LEVER  
FIG. 2  
5
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ASSEMBLY / PRE-OPERATION  
INSTALL TRACTION DRIVE CONTROL ROD  
INSTALL AUGER CONTROL ROD (See Figs. 5 and 6)  
(See Figs. 3 and 4)  
The traction drive control rod has the long loop on the end  
of the spring as shown.  
The auger control rod has the short loop on the end of the  
spring as shown.  
1. Slide rubber sleeve up rod and hook end of spring into  
control arm with loop opening up as shown.  
1. Slide rubber sleeve up rod and hook end of spring into  
pivot bracket with loop opening down as shown.  
2. Withtopendofrodpositionedunderrightsideofcontrol  
panel, push down on rod and insert end of rod into hole  
in auger control bracket. Secure with retainer spring.  
2. With top end of rod positioned under left side of control  
panel, pushroddownandinserttopendofrodintohole  
in drive control bracket. Secure with retainer spring.  
TRACTION DRIVE  
CONTROL ROD  
AUGER  
CONTROL  
ROD  
RUBBER  
SLEEVE  
RUBBER  
SLEEVE  
CONTROL  
ARM  
LOOP  
OPENING  
DOWN  
LOOP  
OPENING  
UP  
PIVOT  
BRACKET  
FIG. 3  
FIG. 5  
AUGER  
CONTROL  
ROD  
AUGER  
CONTROL  
LEVER  
TRACTION DRIVE  
CONTROL LEVER  
RETAINER  
SPRING  
RETAINER  
SPRING  
TRACTION  
DRIVE  
CONTROL  
ROD  
AUGER  
CONTROL  
BRACKET  
DRIVE  
CONTROL  
BRACKET  
FIG. 4  
FIG. 6  
6
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ASSEMBLY / PRE-OPERATION  
INSTALLDISCHARGECHUTE/CHUTEROTATERHEAD  
CHECK TIRE PRESSURE  
(See Fig. 7)  
The tires on your snow thrower were overinflated at the fac-  
tory for shipping purposes. Correct and equal tire pressure  
is important for best snow throwing performance.  
NOTE: The multi-wrench provided in your parts bag may  
be used to install the chute rotater head.  
Reduce tire pressure to 14-17 PSI.  
1. Place discharge chute assembly on top of chute base  
with discharge opening toward front of snow thrower.  
2. Position chute rotater head over chute bracket. If nec-  
essary, rotate chute assembly to align square and pin  
on underside of chute rotater head with holes in chute  
bracket.  
3. With chute rotater head and chute bracket aligned,  
position chute rotater head on pin and threaded stud  
of mounting bracket.  
4. Install 3/8 washer and locknut on threaded stud and  
tighten securely.  
CHUTE  
ROTATER  
HEAD  
3/8 LOCKNUT  
3/8 WASHER  
CHUTE  
BRACKET  
PIN  
THREADED  
STUD  
ROTATER HEAD  
MOUNTING  
BRACKET  
FIG. 7  
7
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OPERATION  
KNOWYOUR SNOW THROWER  
READ THIS OWNER'S MANUAL AND ALL SAFETY RULES BEFORE OPERATINGYOUR SNOW THROWER. Compare  
the illustrations with your snow thrower to familiarize yourself with the location of various controls and adjustments. Save  
this manual for future reference.  
These symbols may appear on your snow thrower or in literature supplied with the product. Learn and understand  
their meaning.  
PRIMER  
DANGER  
OR WARNING  
READ AND FOLLOW ALL SAFETY INFORMATION  
AND INSTRUCTIONS BEFORE USE OF THIS PRODUCT.  
KEEP THESE INSTRUCTIONS FOR FUTURE REFERENCE.  
FORWARD REVERSE  
IGNITION KEY.  
INSERT TO START  
AND RUN,  
PULL OUT TO STOP.  
DISENGAGED  
ENGAGED  
SNOW  
TRACTION  
DISCHARGE  
DRIVE CONTROL  
8
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OPERATION  
SPARK  
PLUG  
ENGINE OIL CAP  
WITH DIPSTICK  
AUGER  
DISCHARGE CHUTE CONTROL LEVER  
CONTROL  
LEVER  
SAFETY  
IGNITION  
KEY  
DRIVE SPEED  
CONTROL LEVER  
GASOLINE  
FILLER  
CAP  
TRACTION  
DRIVE  
CONTROL  
LEVER  
CHUTE  
DEFLECTOR  
CHOKE  
CON-  
TROL  
THROTTLE  
/ ENGINE  
CONTROL  
OIL DRAIN  
PLUG  
RECOIL  
STARTER  
HANDLE  
FUEL SHUT-OFF VALVE  
HANDLE  
KNOB  
DISCHARGE  
CHUTE  
PRIMER  
MUFFLER  
TOOLBOX  
NOTE: ITEMS ABOVE  
ARE SHOWN IN  
THEIR TYPICAL  
LOCATION ON THE  
ENGINE. ACTUAL  
LOCATION MAY VARY  
WITH THE ENGINE  
ONYOUR UNIT.  
SKID PLATE  
AUGERS  
FIG. 8  
MEETS A.N.S.I. SAFETY REQUIREMENTS  
Our snow throwers conform to the standards of the American National Standards Institute.  
Toolbox - used to store spare shear bolts, locknuts and  
wrench.  
Drive speed control lever - used to select forward or  
reverse motion and speed of snow thrower.  
Safety ignition key - must be inserted for the engine to  
start and run. Remove when snow thrower is not in use.  
Traction drive control lever - used to engage power-pro-  
pelled forward or reverse motion of snow thrower.  
Recoil starter handle - used for starting the engine.  
Auger control lever - used to engage auger motion (throw  
snow).  
Primer - pumps additional fuel from the carburetor to the  
cylinder for use when starting a cold engine.  
Discharge chute control lever - used to change the di-  
rection the snow is thrown.  
Throttle/engine control - used to select either FAST or  
SLOW engine speed and to STOP the engine.  
Skid plate - used to adjust height of scraper bar from the  
ground.  
Choke control - used for starting a cold engine.  
9
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OPERATION  
The operation of any snow thrower can result  
in foreign objects thrown into the eyes, which  
canresultinsevereeyedamage. Alwayswear  
safety glasses or eye shields while operating  
your snow thrower or performing any adjust-  
TO USE CHOKE CONTROL (See Fig. 11)  
The choke control is located on the engine. Use the choke  
control whenever you are starting a cold engine. Do not  
use to start a warm engine.  
To engage choke, turn knob clockwise. Slowly turn  
knob counterclockwise to disengage.  
ments or repairs.We recommend standard safety glasses  
or a wide vision safety mask worn over spectacles.  
HOW TO USEYOUR SNOW THROWER  
Know how to operate all controls before adding fuel or  
attempting to start the engine.  
OFF  
FULL  
STOPPING  
TRACTION DRIVE  
Release traction drive control lever to stop the forward  
or reverse movement of the snow thrower.  
AUGER  
FIG. 11  
TO CONTROL SNOW DISCHARGE (See Figs. 12 & 13)  
Release the auger control lever to stop throwing snow.  
ENGINE  
WARNING: Snow throwers have ex-  
posed rotating parts, which can cause  
severe injury from contact,or from ma-  
terial thrown from the discharge chute.  
Keep the area of operation clear of all  
persons, small children and pets at all  
times including startup.  
1. Move throttle control to “STOP” position.  
2. Remove (do not turn) safety ignition key to prevent  
unauthorized use.  
NOTE: Never use choke to stop engine.  
TO USE FUEL SHUT-OFF VALVE (See Fig. 9)  
The fuel shut-off valve is located beneath the fuel tank on  
the engine. Always operate the snow thrower with the fuel  
shut-off valve in the OPEN position.  
WARNING: If the discharge chute or  
auger become clogged, shut-off en-  
gine and wait for all moving parts to  
stop. Use a stick, NOT YOUR HANDS,  
to unclog the chute and/or auger.  
TheDIRECTIONinwhichsnowistobethrowniscontrolled  
by the discharge chute control lever.  
OFF  
To change the discharge chute position, press down-  
ward on discharge chute control lever and move lever  
left or right until chute is in desired position. Be sure  
lever springs back and locks into desired position.  
OPEN  
DISCHARGE CHUTE  
CONTROL LEVER  
FIG. 9  
TO USE THROTTLE CONTROL (See Fig. 10)  
Thethrottlecontrolislocatedontheengine.Alwaysoperate  
the snow thrower with the engine at full throttle.Full throttle  
offers the best snow thrower performance.  
FAST  
FIG. 12  
The DISTANCE that snow is thrown is controlled by the  
position of the chute deflector. Set the deflector low to  
throw snow a short distance; set the deflector higher to  
throw snow farther.  
SLOW  
Tochangethedeflectorposition,loosenknob,movede-  
flector to desired position and tighten knob securely.  
FIG. 10  
10  
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OPERATION  
TO MOVE FORWARD AND BACKWARD (See Fig. 15)  
HIGH POSITION  
SELF-PROPELLING, forward and reverse movement of  
the snow thrower, is controlled by the traction drive control  
lever located on the left side handle.  
Squeezetractiondrivecontrollevertohandletoengage  
the drive system.  
Release traction drive control lever to stop the forward  
or reverse movement of the snow thrower.  
SPEED and DIRECTION are controlled by the drive speed  
control lever.  
KNOB  
Press downward on the speed control lever and move  
lever to desired position BEFORE engaging the trac-  
tion drive control lever. Be sure lever springs back and  
locks into desired position.  
CAUTION: Do not move speed control lever  
when traction drive control lever is engaged.  
Damage to the snow thrower can result.  
CHUTE  
DEFLECTOR  
LOW POSITION  
Slower speeds are for heavier snow and faster speeds  
are for light snow and transporting the snow thrower. It  
is recommended that you use a slower speed until you  
are familiar with the operation of the snow thrower.  
FIG. 13  
TO THROW SNOW (See Fig. 14)  
The auger rotation is controlled by the auger control lever  
located on the right side handle.  
NOTE: When both traction drive and auger control levers  
are engaged, the traction drive control lever will lock the  
auger control lever in the engaged position.This will allow  
you to release your right hand from the handle and adjust  
the discharge chute direction without interrupting the snow  
throwing process.  
Squeeze auger control lever to handle to engage the  
auger and throw snow.  
Release the auger control lever to stop throwing snow.  
TRACTION DRIVE  
CONTROL LEVER  
AUGER  
CONTROL  
LEVER  
DRIVE SPEED  
CONTROL LEVER  
FIG. 14  
FIG. 15  
11  
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OPERATION  
TO ADJUST SKID PLATES (See Fig. 16)  
BEFORE STARTING THE ENGINE  
CHECK ENGINE OIL LEVEL (See Fig. 17)  
NOTE:Thewrenchprovidedinyourpartsbagmaybeused  
to adjust the skid plates.  
The engine on your snow thrower has been shipped, from  
the factory, already filled with oil.  
Skid plates are located on each side of the auger housing  
and adjust the clearance between the scraper bar and the  
ground surface. Adjust skid plates evenly to proper height  
for current surface conditions. For removal of snow in  
normal conditions, such as a paved driveway or sidewalk,  
place skid plates in the highest position (lowest scraper  
clearance) to give a 1/8" clearance between the scraper  
bar and the ground. Use a middle position if the surface  
to be cleared is uneven.  
1. Check engine oil with snow thrower on level ground.  
2. Remove oil fill cap/dipstick and wipe clean, reinsert  
the dipstick and screw tight, wait for a few seconds,  
remove and read oil level. If necessary, add oil until  
“FULLmark on dipstick is reached. Do not overfill.  
To change engine oil, see “TO CHANGE ENGINE OIL”  
in the Maintenance section of this manual.  
NOTE: It is not recommended to operate the snow thrower  
over gravel or rocky surfaces.Objects such as gravel, rocks  
or other debris, can easily be picked up and thrown by the  
impeller, which can cause serious personal injury, property  
damage or damage to the snow thrower.  
ADD GASOLINE (See Fig. 17)  
Fill fuel tank to bottom of tank filler neck. Do not over-  
fill. Use fresh, clean, regular unleaded gasoline with  
a minimum of 87 octane. Do not mix oil with gasoline.  
Purchase fuel in quantities that can be used within 30  
days to assure fuel freshness.  
If snow thrower must be operated over gravel surface,  
use extra caution and be sure skid plates are adjusted  
to lowest (highest scraper clearance) position.  
WARNING: Wipe off any spilled oil or  
fuel. Do not store, spill or use gasoline  
near an open flame.  
1. Shut off engine and wait for all moving parts to stop.  
2. Adjust skid plates by loosening the rear 1/2" hex nut  
only,thenmovingskidplatetodesiredposition.Besure  
both plates are adjusted evenly. Tighten securely.  
CAUTION: Alcohol blended fuels (called gas-  
ohol or using ethanol or methanol) can attract  
moisture which leads to separation and for-  
mation of acids during storage. Acidic gas can  
damage the fuel system of an engine while in  
storage. To avoid engine problems, the fuel  
system should be emptied before storage of  
30 days or longer. Empty the gas tank, start  
the engine and let it run until the fuel lines and  
carburetor are empty. Use fresh fuel next sea-  
son. See Storage Instructions for additional  
information. Never use engine or carburetor  
cleaner products in the fuel tank or permanent  
damage may occur.  
HIGH POSITION  
(LOW GROUND  
CLEARANCE)  
AUGER  
HOUSING  
SKID PLATE  
1/2" HEX NUT  
LOW POSITION (HIGH GROUND CLEARANCE)  
FIG. 16  
SCRAPER BAR  
The scraper bar is not adjustable, but is reversible. After  
considerable use it may become worn. When it has worn  
almost to the edge of the housing, it can be reversed,  
providing additional service before requiring replacement.  
Replace a damaged or worn scraper bar.  
CHOKE CONTROL  
THROTTLE PRIMER  
ENGINE OIL  
FILL CAP /  
DIPSTICK  
SAFETY  
IGNITION  
KEY  
GASOLINE  
FILLER CAP  
FUEL SHUT-  
OFF VALVE  
RECOIL  
STARTER  
HANDLE  
NOTE: ALL ITEMS ARE SHOWN IN THEIR TYPICAL LOCATION.  
ACTUAL LOCATION MAY VARY WITH ENGINE ONYOUR UNIT.  
FIG. 17  
12  
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OPERATION  
TO START ENGINE  
SNOW THROWING TIPS  
Be sure fuel shut-off valve is in the OPEN position.  
Always operate the snow thrower with the engine at  
full throttle. Full throttle offers the best performance.  
Your snow thrower engine is equipped with a recoil  
starter.  
Go slower in deep, freezing or heavy wet snow. Use  
the drive speed control, NOT the throttle, to adjust  
speed.  
COLD START  
1. Insert safety ignition key into the ignition slot until it  
clicks. DO NOT turn the key. Keep the extra safety  
ignition key in a safe place.  
It is easier and more efficient to remove snow imme-  
diately after it falls.  
The best time to remove snow is the early morning. At  
this time the snow is usually dry and has not been ex-  
posed to the direct sun and warming temperatures.  
2. Place throttle control in FAST position.  
3. Rotate choke control to FULL position.  
4. Push the primer four (4) times if the temperature is  
below 15°F, or two (2) times if temperature is between  
15° and 50°F. If temperature is above 50°F, priming is  
not necessary.  
Slightly overlap each successive path to ensure all  
snow will be removed.  
Throw snow downwind whenever possible.  
Adjust the skid plates to proper height for current snow  
conditions. See “TO ADJUST SKID PLATES” in this  
section of this manual.  
NOTE: Over priming may cause flooding, preventing the  
engine from starting. If you do flood the engine, wait a few  
minutes before attempting to start and DO NOT push the  
primer.  
For extremely heavy snow, reduce the width of snow  
removal by overlapping previous path and moving  
slowly.  
5. Pull recoil starter handle quickly. Do not allow starter  
rope to snap back.  
Keep engine clean and clear of snow during use.This  
will help air flow and extend engine life.  
6. When the engine starts, release the recoil starter  
handle and slowly move the choke control to the OFF  
position.  
Aftersnow-throwingiscompleted,allowenginetorunfor  
a few minutes to melt snow and ice off the engine.  
Allow the engine to warm up for a few minutes. Engine will  
not develop full power until it has reached normal operating  
temperature.  
Clean the entire snow thrower thoroughly after each  
use and wipe dry so it is ready for next use.  
WARM START  
WARNING: Do not operate snow  
throwerifweatherconditionsimpairvis-  
ibility. Throwing snow during a heavy,  
windy snowstorm can blind you and be  
hazardous to the safe operation of the  
snow thrower.  
Follow the steps above, keeping the choke in the OFF  
position. DO NOT push the primer.  
BEFORE STOPPING  
Run the engine for a few minutes to help dry off any mois-  
ture on the engine.  
To avoid possible freeze-up of the starter, proceed as fol-  
lows:  
1. Whiletheengineisrunning,pulltherecoilstarterhandle  
with rapid, full arm strokes three or four times.  
NOTE: The unusual sound made while pulling the recoil  
starter handle will not harm the engine or starter.  
IF RECOIL STARTER HAS FROZEN  
If the recoil starter has frozen and will not turn the engine,  
proceed as follows:  
1. Grasp the recoil starter handle and slowly pull as much  
rope out of the starter as possible.  
2. Release the recoil starter handle and let it snap back  
against the starter.  
If the engine still fails to start, repeat the above steps.  
13  
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MAINTENANCE  
GENERAL RECOMMENDATIONS  
LUBRICATION CHART  
Thewarrantyonthissnowthrowerdoesnotcoveritemsthat  
have been subjected to operator abuse or negligence. To  
receivefullvaluefromthewarranty, operatormustmaintain  
snow thrower as instructed in this manual. Some adjust-  
mentswillneedtobemadeperiodicallytoproperlymaintain  
your snow thrower.  
SAE 30 Motor Oil  
See “ENGINE” in  
Maintenance section  
At least once a season, check to see if you should make  
any of the adjustments described in the Service and Ad-  
justments section of this manual.  
Pivot points  
Engine oil  
At least once a year, you should replace the spark plug  
and check belts for wear. A new spark plug will help  
your engine run better and last longer.  
Follow the maintenance schedule in this manual.  
NOTE: Use only Original Equipment Manufacturer (OEM)  
parts to service this unit. Failure to do so can cause the unit  
to malfunction and pose a risk of injury to the operator.  
BEFORE EACH USE  
1. Check engine oil level.  
2. Check for loose fasteners.  
3. Checkcontrolstobesuretheyarefunctioningproperly.  
LUBRICATION  
Keep your snow thrower well lubricated  
(See “LUBRICATION CHART”).  
SNOW THROWER  
Always observe the safety rules when performing any  
maintenance.  
Keep tires free of gasoline and oil, which can harm  
rubber.  
NOTE: To seal tire punctures and prevent flat tires due to  
slow leaks, tire sealant may be purchased from your local  
parts dealer. Tire sealant also prevents tire dry rot and  
corrosion.  
TIRES  
Maintain proper air pressure in both tires (SeePROD-  
UCT SPECIFICATIONS” section in this manual).  
14  
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MAINTENANCE  
V-BELTS  
TO CHANGE ENGINE OIL  
Check V-belts for deterioration and wear after every 50  
hours of operation and replace if necessary. The belts  
are not adjustable. Replace belts if they begin to slip from  
wear. (See “TO REMOVE BELT COVER” in the Service  
and Adjustments section of this manual).  
Determine temperature range anticipated before next oil  
change. All oil must meet API service classification SF-SJ.  
Be sure snow thrower is on level surface.  
Oil will drain more freely when warm.  
Catch oil in a suitable container.  
TheV-beltsonyoursnowthrowerareofspecialconstruction  
andshouldbereplacedbyoriginalequipmentmanufacturer  
(OEM)beltsavailablefromyournearestdealer.Usingother  
than OEM belts can cause personal injury or damage to  
the snow thrower.  
NOTE: The left side wheel may be removed from snow  
thrower for easier access to the oil drain plug and place-  
ment of a suitable container. The unit tilted, resting on the  
frame with the left wheel removed, will help drain any oil  
trapped inside the engine. (See “TO REMOVE WHEELS”  
in the Service and Adjustments section of this manual).  
AUGER GEAR CASE  
The gear case was filled with lubricant to the proper  
level at the factory. The only time the lubricant needs  
attention is if service has been performed on the gear  
case.  
1. Disconnect spark plug wire from spark plug and place  
wire where it cannot come in contact with spark plug.  
2. Clean area around drain plug.  
If lubricant is required, use only Ronex ED #1 grease.  
3. Remove drain plug and drain oil in a suitable container.  
4. Install drain plug and tighten securely.  
TRACTION DRIVE SYSTEM  
5. Wipe off any spilled oil from snow thrower and engine.  
DO NOT lubricate the drive components inside the snow  
thrower. The sprockets, hex shafts, drive disc and friction  
wheel require no lubrication. The bearings and bushings  
are lifetime lubricated and require no maintenance.  
6. Install left wheel (if removed for draining oil).Be sure to  
install klick pin into proper hole in wheel axle (See “TO  
REMOVE WHEELS” in the Service and Adjustments  
section of this manual).  
CAUTION:Anylubricatingoftheabovecompo-  
nents can cause contamination of the friction  
wheel and damage to the drive system of your  
snow thrower.  
7. Remove oil fill cap/dipstick. Be careful not to allow dirt  
to enter the engine.  
8. Refill engine with oil through oil dipstick tube. Pour  
slowly. Do not overfill. For approximate capacity see  
“PRODUCTSPECIFICATIONSsectionofthismanual.  
ENGINE  
See engine manual.  
9. Use gauge on oil fill cap/dipstick for checking level. Be  
sure dipstick cap is tightened securely for accurate  
reading. Keep oil at “FULLline on dipstick.  
LUBRICATION  
10. Wipe off any spilled oil.  
Use only high quality detergent oil rated with API service  
classification SF-SJ. Select the oil's SAE viscosity grade  
according to your expected operating temperature.  
MUFFLER  
Inspect and replace corroded muffler as it could create a  
fire hazard and/or damage.  
SPARK PLUG  
Replacesparkplugatthebeginningofeachseasonorafter  
every100hoursofoperation, whicheveroccursrst. Spark  
plug type and gap setting are shown in the “PRODUCT  
SPECIFICATIONS” section of this manual.  
CLEANING  
IMPORTANT: For best performance, keep snow thrower  
housing free of any dirt or trash. Clean the outside of your  
snow thrower after each use.  
NOTE: Although multi-viscosity oils (5W30, 10W30 etc.)  
improve starting in cold weather, these multi-viscosity oils  
will result in increased oil consumption when used above  
32°F. Check your engine oil level more frequently to avoid  
possible engine damage from running low on oil.  
WARNING: Disconnectsparkplugwire  
from spark plug and place wire where it  
cannotcomeincontactwithsparkplug.  
Change the oil after every 50 hours of operation or at least  
once a year if the snow thrower is not used for 50 hours  
in one year.  
Keepnishedsurfaces/wheelsfreeofgasoline, oil, etc.  
We do not recommend using a garden hose to clean  
yoursnowthrowerunlesstheelectricalsystem, muffler  
and carburetor are covered to keep water out. Water  
in engine can result in shortened engine life.  
Checkthecrankcaseoillevelbeforestartingtheengineand  
after each five (5) hours of continuous use. Tighten oil fill  
cap / dipstick securely each time you check the oil level.  
15  
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SERVICE AND ADJUSTMENTS  
1. Disengage all controls and move throttle control to  
WARNING: To avoid serious injury,  
before performing any service or ad-  
justments:  
STOP position. Wait for all moving parts to stop.  
2. Disconnect spark plug wire from spark plug and place  
it wear it cannot come in contact with spark plug.  
1. Be sure throttle is in STOP position.  
2. Remove safety ignition key.  
3. Align holes in impeller hub with holes in impeller shaft  
and install two (2) new 1/4-20 x 1-5/8" capscrew/shear  
bolts. Install 1/4-20 locknuts and tighten securely.  
3. Make sure the augers and all moving  
parts have completely stopped.  
CAUTION: Do not substitute. Use only original  
equipment capscrew/shear bolts as supplied  
with your snow thrower.  
4. Disconnect spark plug wire from  
spark plug and place wire where it  
cannot come in contact with plug.  
4. Connect spark plug wire to spark plug.  
SNOW THROWER  
TO ADJUST SNOW THROWER HEIGHT  
See “TO ADJUST SKID PLATES” and “SCRAPER BAR”  
in the Operation section of this manual.  
1/4-20  
LOCKNUT  
1/4-20 x 1-5/8  
CAPSCREW /  
SHEAR BOLT  
1/4-20 x 2  
SHOULDER /  
SHEAR BOLT  
IMPELLER HUB  
CHUTE DEFLECTOR  
IMPELLER  
SHAFT  
The chute deflector, attached to the top of the discharge  
chute, is provided to direct discharging snow away from  
the operator. If the deflector becomes damaged, it should  
be replaced.  
WARNING: To avoid serious injury,  
never operate your snow thrower with  
the deflector removed or damaged.  
Tochangedirectionand/ordistancesnowisdischarged,  
see “TO CONTROL SNOW DISCHARGE” in the Op-  
eration section of this manual.  
AUGER  
HUB  
SHEAR BOLTS (See Fig. 18)  
AUGER SHEAR BOLTS  
1/4-20  
LOCKNUT  
AUGER HUB  
AUGER SHAFT  
Both right and left-hand augers are secured to the auger  
shaft with a shoulder/shear bolt and hex nut. Should a for-  
eign object or ice become lodged in the augers, the shear  
bolts are designed to break, preventing damage to any  
other components. If one or both augers do not turn when  
auger control lever is engaged, check to see if one or both  
of the bolts have sheared. To replace the shear bolts:  
FIG. 18  
TO REMOVE BELT COVER (See Fig. 19)  
1. Remove the two (2) screws securing belt cover to  
frame.  
2. Remove belt cover.  
1. Disengage all controls and move throttle control to  
STOP position. Wait for all moving parts to stop.  
Replace belt cover by installing cover and screws and  
tighten securely.  
2. Disconnect spark plug wire from spark plug and place  
it wear it cannot come in contact with spark plug.  
3. Align hole in auger hub with hole in auger shaft and  
install a new 1/4-20 x 2" shoulder/shear bolt. Install  
1/4-20 lock nut and tighten securely.  
BELT  
COVER  
CAUTION: Do not substitute. Use only original  
equipment shear bolts as supplied with your  
snow thrower.  
4. Connect spark plug wire to spark plug.  
IMPELLER SHEAR BOLTS  
The impeller is secured to the impeller shaft with two (2)  
capscrew/shear bolts and hex nuts.Should a foreign object  
or ice become lodged in the impeller, the capscrews are  
designed to break, preventing damage to any other com-  
ponents. If impeller does not turn when auger control lever  
is engaged, check to see if the capscrews have sheared.  
To replace the capscrew/shear bolts:  
FRAME  
SCREWS  
FIG. 19  
16  
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SERVICE AND ADJUSTMENTS  
TO REPLACE BELTS (See Fig. 20)  
The auger and traction drive belts are not adjustable. If the  
belts are damaged or begin to slip from wear, they should  
be replaced.It is recommended that the belt(s) be replaced  
by a qualified service center.  
HINT: Insert a 3/8" drive ratchet (in the “ON” position) into  
the square hole in idler arm and rotate ratchet clockwise  
to relieve tension.  
8. With tension relieved on idler, install new traction drive  
belt around pulleys and inside belt keepers.  
NOTE: It is recommended that both the auger and traction  
drive belt be replaced at the same time.  
9. Place auger belt around and inside the groove of auger  
pulley only.  
TheV-beltsonyoursnowthrowerareofspecialconstruction  
andshouldbereplacedbyoriginalequipmentmanufacturer  
(OEM)beltsavailablefromyournearestdealer.Usingother  
than OEM belts can cause personal injury or damage to  
the snow thrower.  
10. While your assistant slowly raises handles to rejoin  
the auger housing and frame assembly, pull up on the  
auger belt and squeeze sides together above pulley  
so belt is fully seated in groove of pulley.  
11. Bring snow thrower completely together and check  
carefully for proper routing of belts. If auger belt has  
becomedislodgedfromthepulley(bycatchingtheidler  
arm bracket while bringing snow thrower together),  
separate the snow thrower and repeat step 10. Belt  
must be fully seated in pulley groove when bringing  
the snow thrower together.  
WARNING: Belt replacement requires  
separation of the snow thrower. While  
separating the auger housing from the  
frame assembly, it is important that an  
assistantstandintheoperatingposition  
andholdthesnowthrowerhandles.Se-  
rious personal injury and/or damage to  
theunitcouldoccurifthesnowthrower  
should fall during the belt changing  
process.  
12. Install the two (2) hex bolts and lock washers and  
tighten securely.  
13. INSTALLENGINEPULLEY-Placebeltinpulleygroove  
and slide pulley on crankshaft. Install flat washer, lock-  
washer and bolt and tighten securely (30-35 ft. lbs.  
torque). Make sure belt is inside belt keeper.  
FRAME  
ASSEMBLY  
AUGER  
HOUSING  
14. INSTALL BELT COVER and two (2) screws. Tighten  
securely.  
15. INSTALL DISCHARGE CHUTE – See “INSTALL DIS-  
CHARGE CHUTE / CHUTE ROTATER HEAD” in the  
Assembly / Pre-Operation section of this manual.  
BELT KEEPER  
TRACTION DRIVE BELT  
ENGINE  
HANDLES  
1. REMOVEGASOLINEFROMFUELTANK-Draingaso-  
line from fuel tank into a suitable container, outdoors,  
away from fire or flame. Wipe up any spilled gasoline.  
FLAT WASHER  
PULLEY  
LOCKWASHER  
BOLT  
2. REMOVE DISCHARGE CHUTE - Loosen locknut  
securing chute rotator head to mounting bracket only  
enough to allow chute rotator head to be raised and  
discharge chute to be removed from snow thrower.  
AUGER  
BELT  
IDLER ARM  
SQUARE  
HOLE  
3. REMOVE BELT COVER - See “TO REMOVE BELT  
COVER” in this section of this manual.  
CLUTCHING  
IDLER ARM  
BRACKET  
4. REMOVEENGINEPULLEY-Removebolt,lockwasher  
and flat washer securing pulley to engine crankshaft.  
Remove outside (auger) pulley only from crankshaft.  
AUGER PULLEY  
5. SEPARATE SNOW THROWER - With your assistant  
standing in the operating position holding the handles,  
remove the two (2) bolts and lock washers holding  
auger housing and frame together.  
BOLT  
LOCK  
WASHER  
WARNING: As the last bolt is removed,  
have your assistant carefully lower the  
handles down to the ground.  
6. REMOVE AUGER BELT from around pulley.  
FRAME  
AUGER  
7. RELIEVE TENSION ON TRACTION DRIVE BELT  
IDLER and remove traction drive belt from around  
pulleys.  
HOUSING  
FIG. 20  
17  
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TO REMOVE WHEELS (See Fig. 21)  
Remove the klik pin and remove wheel from axle.  
NOTE: To seal punctures or prevent flat tires due to slow  
leaks, tire sealant may be purchased from your local parts  
dealer.Tire sealant also prevents tire dry rot and corrosion.  
IMPORTANT:When installing wheel, be sure to use the in-  
nermost hole in axle and the wheel hub hole. To disengage  
drive system from the wheels (for pushing or transporting  
the snow thrower), remove klik pin from wheel hub and  
insert pin into the outermost hole in axle only.  
ENGINE  
See engine manual.  
CARBURETOR  
Your carburetor is not adjustable. Engine performance  
should not be affected at altitudes up to 7,000 feet (2,134  
meters). If your engine does not operate properly due to  
suspected carburetor problems, take your snow thrower to  
a qualified service center.  
KLIK PIN  
OUTER HOLE  
ENGINE SPEED  
Never tamper with the engine governor, which is factory set  
for proper engine speed. Overspeeding the engine above  
the factory high speed setting can be dangerous and will  
void the warranty. If you think the engine-governed high  
speed needs adjusting, contact a qualified service center,  
which has proper equipment and experience to make any  
necessary adjustments.  
INNER  
HOLE  
WHEEL  
WHEEL HUB  
FIG. 21  
STORAGE  
Immediately prepare your snow thrower for storage at the  
end of the season or if the unit will not be used for 30 days  
or more.  
Empty the fuel tank by starting the engine and letting  
it run until the fuel lines and carburetor are empty.  
Never use engine or carburetor cleaner products in the  
fuel tank or permanent damage may occur.  
WARNING: Never store the snow  
throwerwithgasolineinthetankinside  
a building where fumes may reach an  
open flame, spark or pilot light as on a  
furnace, water heater, clothes dryer or  
gasappliance. Allowtheenginetocool  
before storing in any enclosure.  
Use fresh fuel next season.  
NOTE: Fuel stabilizer is an acceptable alternative in min-  
imizing the formation of fuel gum deposits during storage.  
Add stabilizer to gasoline in fuel tank or storage container.  
Always follow the mix ratio found on stabilizer container.  
Run engine at least 10 minutes after adding stabilizer to  
allow the stabilizer to reach the carburetor. Do not empty  
the gas tank and carburetor if using fuel stabilizer.  
SNOW THROWER  
When snow thrower is to be stored for a period of time,  
clean it thoroughly, remove all dirt, grease, leaves, etc.  
Store in a clean, dry area.  
ENGINE OIL  
Drain oil (with engine warm) and replace with clean en-  
gine oil. (See “ENGINE” in the Maintenance section of  
this manual).  
1. Clean entire snow thrower (See “CLEANING” in the  
Maintenance section of this manual).  
CYLINDER  
1. Remove spark plug.  
2. Inspect and replace belts, if necessary (See “TO RE-  
PLACEBELTSintheServiceandAdjustmentssection  
of this manual).  
2. Pour one ounce (29 ml) of oil through spark plug hole  
into cylinder.  
3. Lubricate as shown in the Maintenance section of this  
manual.  
3. Pullrecoilstarterhandleslowlyafewtimestodistribute  
oil.  
4. Besurethatallnuts,bolts,screws,andpinsaresecurely  
fastened. Inspect moving parts for damage, breakage  
and wear. Replace if necessary.  
4. Replace with new spark plug.  
OTHER  
5. Touch up all rusted or chipped paint surfaces; sand  
lightly before painting.  
Do not store gasoline from one season to another.  
Replace your gasoline can if your can starts to rust.  
Rust and/or dirt in your gasoline will cause problems.  
ENGINE  
See engine manual.  
If possible, store your snow thrower indoors and cover  
it to protect it from dust and dirt.  
FUEL SYSTEM  
Coveryoursnowthrowerwithasuitableprotectivecover  
thatdoesnotretainmoisture.Donotuseplastic.Plastic  
cannotbreathe,whichallowscondensationtoformand  
will cause your snow thrower to rust.  
IMPORTANT: It is important to prevent gum deposits from  
forming in essential fuel system parts such as carburetor,  
fuelhose,ortankduringstorage.Also,alcoholblendedfuels  
(called gasohol or using ethanol or methanol) can attract  
moisture which leads to separation and formation of acids  
during storage. Acidic gas can damage the fuel system of  
an engine while in storage.  
IMPORTANT: Never cover snow thrower while engine/  
exhaust area is still warm.  
18  
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TROUBLESHOOTING  
See appropriate section in manual unless directed to a qualified service center.  
PROBLEM  
CAUSE  
CORRECTION  
Does not start  
1. Fuel shut-off valve (if so  
equipped) in OFF position.  
1. Turn fuel shut-off valve to OPEN position.  
2. Safety ignition key  
is not inserted.  
2. Insert safety ignition key.  
3. Out of fuel.  
3. Refill fuel tank with fresh, clean gasoline.  
4. Move throttle to FAST position.  
5. Move to FULL position.  
6. Prime as instructed in the Operation section of this manual.  
7. Wait a few minutes before restarting, DO NOT prime.  
8. Connect wire to spark plug.  
4. Throttle in STOP position.  
5. Choke in OFF position.  
6. Primer not depressed.  
7. Engine is flooded.  
8. Spark plug wire is  
disconnected.  
9. Bad spark plug.  
10. Stale fuel.  
11. Water in fuel.  
9. Replace spark plug.  
10. Empty fuel tank & carburetor, refill with fresh, clean gasoline.  
11. Empty fuel tank & carburetor, refill with fresh, clean gasoline.  
Loss of power  
1. Spark plug wire loose.  
2. Throwing too much snow.  
3. Fuel tank cap is covered  
with ice or snow.  
1. Reconnect spark plug wire.  
2. Reduce speed and width of swath.  
3. Remove ice and snow on and around fuel tank cap.  
4. Dirty or clogged muffler.  
4. Clean or replace muffler.  
Engine idles or  
runs roughly  
1. Choke is in FULL position.  
2. Blockage in fuel line.  
3. Stale fuel.  
4. Water in fuel.  
5. Carburetor is in need of  
adjustment or overhaul.  
1. Move choke to OFF position.  
2. Clean fuel line.  
3. Empty fuel tank & carburetor, refill with fresh, clean gasoline.  
4. Empty fuel tank & carburetor, refill with fresh, clean gasoline.  
5. Contact a qualified service center.  
Excessive  
vibration  
1. Loose parts or damaged  
augers or impeller.  
1. Tighten all fasteners. Replace damaged parts.  
If vibration remains, contact a qualified service center.  
Recoil starter  
is hard to pull  
1. Frozen recoil starter.  
1. See “IF RECOIL STARTER HAS FROZEN”  
in the Operation section of this manual.  
Loss of traction 1. Drive belt is worn.  
1. Check / replace drive belt.  
2. Check / reinstall drive belt.  
drive / slowing  
of drive speed  
2. Drive belt is off of pulley.  
3. Friction drive wheel is worn. 3. Contact a qualified service center.  
Loss of snow  
discharge or  
slowing of  
1. Auger belt is off of pulley.  
2. Auger belt is worn.  
3. Clogged discharge chute.  
1. Check / reinstall auger belt.  
2. Check / replace auger belt.  
3. Clean snow chute.  
snow discharge 4. Augers / impeller jammed.  
4. Remove debris or foreign object from augers / impeller.  
19  
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REPAIR PARTS  
AUGER HOUSING / IMPELLER ASSEMBLY  
SNOW THROWER - - MODEL NO. 524ST (HL524STA), PRODUCT NO. 954 63 35-52  
48  
51  
49  
33  
35  
47  
32  
34  
36  
19  
37  
27  
46  
44  
43  
45  
27  
42  
38  
50  
42  
43  
41  
40  
39  
16  
14  
4
13  
6
15  
6
6
12  
6
5
9
18  
7
7
55  
19  
2
28  
26  
19  
20  
8
21  
10  
29  
55  
25  
24  
31  
23  
6
19  
28  
11  
27  
27  
18  
22  
21  
30  
26  
25  
2
19  
24  
23  
20  
20  
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REPAIR PARTS  
AUGER HOUSING / IMPELLER ASSEMBLY  
SNOW THROWER - - MODEL NO. 524ST (HL524STA), PRODUCT NO. 954 63 35-52  
KEY PART  
NO. NO.  
DESCRIPTION  
2
4
5
6
7
8
9
532 05 38-47 Washer, Flat  
532 18 10-83 Pulley, Impeller  
532 18 89-10 Bearing Assembly, Flange  
532 15 53-77 Nut, Hex Flange 5/16-18  
532 18 03-55 Bolt, Flat Head, Carriage 5/16-18 x 5/8  
872 27 05-05 Bolt, Carriage 5/16-1 8 x 5/8  
532 17 88-20 Nut, Cage 3/8-16  
10 532 18 40-90 Housing, Auger  
11 532 18 40-96 Bar, Scraper  
12 532 18 40-95 Bracket, Corner Discharge  
13 532 17 53-22 Base, Discharge Chute  
14 819 11 15-07 Washer, Flat  
15 810 04 05-00 Washer, Lock 5/16  
16 874 95 05-12 Screw, Hex Head 5/16-18 x 3/4  
18 532 17 95-82 Screw, Hex Head 5/16 x 1  
19 873 80 04-00 Nut, Hex Lock 1/4-20  
20 873 80 05-00 Nut, Hex Lock 5/16-18  
21 532 15 54-15 Washer, Flat  
22 532 18 40-94 Skid Plate, RH  
23 532 17 92-46 Washer, Nylon, Friction  
24 872 27 05-06 Bolt, Carriage 5/16-18 x 3/4  
25 532 18 56-00 Bolt, Shoulder  
26 532 17 46-58 Bearing, Auger  
27 532 17 46-97 Washer, Thrust, 1"  
28 532 18 74-94 Bolt, Shear  
29 532 18 40-93 Skid Plate, LH  
30 532 18 41-02 Auger Assembly, RH  
31 532 18 40-99 Auger Assembly, LH  
32 532 17 46-99 O-Ring  
33 532 17 47-00 Bushing, Flange 3/4  
34 532 17 46-81 Washer, Thrust 3/4  
35 532 17 46-84 Bearing, Thrust 3/4  
36 532 17 46-60 Shaft, Impeller  
37 532 17 46-83 Washer, Thrust 5/8  
38 532 17 46-86 Bushing, Flange 5/8  
39 532 15 00-78 Screw, Hex Head 5/16-18 x 3/4  
40 532 08 64-47 Plug, Case  
41 532 17 46-88 Housing, Gearbox, RH  
42 532 17 46-98 Seal, Oil  
43 532 17 47-01 Bushing, Flange, 1"  
44 532 17 88-79 Key, Square 1/4 x 1/4 x 7/8  
45 532 17 46-59 Gear, Worm  
46 532 17 46-57 Shaft, Auger  
47 532 17 46-87 Housing, Gearbox, LH  
48 532 18 41-05 Impeller Assembly  
49 874 78 04-26 Screw, Hex Head 1/4-20 x 1-5/8  
50 532 17 53-11 Gasket, Gearbox  
51 532 18 42-05 Pin, Roll 3/16 x 1-1/8  
55 532 18 82-43 Kit, Shear (Contains 6 each of Key Numbers 19 and 28)  
NOTE: All component dimensions given in U.S. inches  
1 inch = 25.4 mm  
21  
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REPAIR PARTS  
CONTROL PANEL / DISCHARGE CHUTE  
SNOW THROWER - - MODEL NO. 524ST (HL524STA), PRODUCT NO. 954 63 35-52  
1
19  
2
2
2
6
30  
26  
20  
27  
28  
4
5
25  
14  
6
13  
9
3
29  
21  
16  
27  
24  
7
18  
12  
11  
14  
17  
15  
10  
8
8
Chute-knob  
22  
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REPAIR PARTS  
CONTROL PANEL / DISCHARGE CHUTE  
SNOW THROWER - - MODEL NO. 524ST (HL524STA), PRODUCT NO. 954 63 35-52  
KEY PART  
NO. NO.  
DESCRIPTION  
1
2
3
4
5
6
7
8
9
532 18 33-34 Knob, Lever  
817 50 10-10 Screw #10-24 x 5/8  
532 18 41-14 Strap, Slotted  
873 80 06-00 Nut, Lock 3/8-16  
819 13 13-16 Washer, Flat 3/8  
532 17 86-59 Control Assembly, Chute Rotater  
532 18 40-89 Support, Pivot  
532 15 00-78 Screw, Hex Head 5/16-18 x 3/4  
532 18 04-53 Knob, Deflector  
10 532 18 56-00 Bolt, Shoulder  
11 532 05 38-47 Washer, Flat 1/4  
12 873 80 04-00 Nut, Lock 1/4-20  
13 872 27 05-05 Bolt, Carriage 5/16-18 x 5/8  
14 532 17 92-46 Washer, Nylon  
15 532 18 41-12 Chute Assembly  
16 532 18 41-13 Deflector Assembly  
17 532 17 91-45 Seal, Deflector  
18 532 12 84-15 Rivet, Blind  
19 532 18 33-33 Knob, Speed Control Lever  
20 872 27 05-06 Bolt, Carriage 5/16-18 x 3/4  
21 532 15 54-15 Washer, Flat 5/16  
24 874 78 05-28 Screw, Hex Head 5/16-18 x 1-3/4  
25 532 15 53-77 Nut, Lock 5/16-18  
26 532 17 92-57 Lever Assembly, Speed Control  
27 532 16 96-75 Retainer, Hairpin  
28 532 18 04-45 Rod, Upper, Speed Control  
29 532 18 04-46 Rod, Lower, Speed Control  
30 873 80 05-00 Nut, Lock 5/16-18  
NOTE: All component dimensions given in U.S. inches  
1 inch = 25.4 mm  
23  
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REPAIR PARTS  
HANDLES  
SNOW THROWER - - MODEL NO. 524ST (HL524STA), PRODUCT NO. 954 63 35-52  
2
4
3
4
5
13  
11  
15  
5
6
11  
9
6
36  
3
1
5
8
4
17  
4
16  
7
14  
28  
5
10  
19  
33  
37  
15  
11  
21  
20  
18  
12  
34  
35  
23  
22  
21  
16  
22  
20  
17  
24  
27  
25  
30  
32  
31  
31  
32  
27  
24  
26  
24  
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REPAIR PARTS  
HANDLES  
SNOW THROWER - - MODEL NO. 524ST (HL524STA), PRODUCT NO. 954 63 35-52  
KEY PART  
NO. NO.  
DESCRIPTION  
1
2
3
4
5
6
7
8
9
532 18 41-10 Lever, Auger Control, RH  
532 18 41-09 Lever, Traction Drive Control, LH  
532 17 94-39 Nut, Cage 1/4-20  
532 17 88-88 Bushing, Flange  
532 16 96-75 Retainer, Hairpin  
532 18 04-02 Screw, Hex Head 1/4-20 x 3/4  
532 17 86-52 Rod, Interlock  
532 18 40-03 Tube Assembly, Interlock, RH  
532 17 86-51 Tube Assembly, Interlock, LH  
10 532 18 41-06 Panel, Control  
11 874 78 05-24 Screw, Hex Head 5/16-18 x 1-1/2  
12 874 78 05-28 Screw, Hex Head 5/16-18 x 1-3/4  
13 532 18 41-07 Handle Tube, LH  
14 532 18 41-08 Handle Tube, RH  
15 873 80 05-00 Nut, Lock 5/16-18  
16 819 13 13-16 Washer, Flat 3/8  
17 532 17 88-99 Knob, Handle  
18 532 18 45-94 Rod, Auger Control  
19 532 17 90-98 Rod, Traction Control  
20 532 18 04-28 End, Control Rod  
21 873 35 05-00 Nut, Hex, Jam 5/16-18  
22 872 12 06-18 Bolt, Carriage 3/8-16 x 2-1/4  
23 532 18 40-87 Handle Tube, Lower  
24 532 18 04-47 Sleeve, Spring  
25 532 18 09-26 Spring, Traction Drive  
26 532 17 86-69 Spring, Auger Control  
27 871 21 06-16 Screw, Hex Head 3/8-16 x 1  
28 532 18 04-94 Clip, Panel  
30 532 18 33-52 Console, Panel  
31 532 17 52-62 Screw, Hex Head, Tapping #10-24 x 1-1/4  
32 532 18 44-71 Screw, Hex Head, Tapping #10-24 x 1/2  
33 532 18 41-11 Latch, Interlock  
34 532 18 35-18 Bolt, Shoulder  
35 532 06 80-38 Nut, Lock 1/4-20  
36 532 17 88-31 Spring, Torsion  
37 532 17 86-58 Spring, Interlock  
NOTE: All component dimensions given in U.S. inches  
1 inch = 25.4 mm  
25  
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REPAIR PARTS  
DRIVE  
SNOW THROWER - - MODEL NO. 524ST (HL524STA), PRODUCT NO. 954 63 35-52  
5
13  
2
1
3
4
1
3
11  
43  
5
4
5
6
2
13  
1
3
2
1
2
3
5
7
4
2
3
2
3
8
7
3
2
14  
10  
9
15  
22  
12  
16  
21  
17  
24  
1
41  
23  
21  
18  
25  
3
2
26  
32  
20  
34  
44  
15 29  
19  
22  
27  
41  
33  
36  
38  
39  
31  
28  
30  
22  
40  
37  
33  
35  
26  
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REPAIR PARTS  
DRIVE  
SNOW THROWER - - MODEL NO. 524ST (HL524STA), PRODUCT NO. 954 63 35-52  
KEY PART  
NO. NO.  
DESCRIPTION  
1
2
3
4
5
6
7
8
9
532 14 63-15 Screw, Hex Head 5/16-18 x 5/8  
873 80 05-00 Nut, Lock 5/16-18  
532 15 54-15 Washer, Flat  
817 49 05-08 Screw, Hex Head 5/16-18 x 1/2  
532 18 00-17 Bearing, Flange  
532 18 01-34 Shaft, Auxiliary  
532 17 92-70 Spacer, Plate  
532 18 40-79 Plate, Auxiliary  
532 18 00-82 Gear, Intermediate (12/58)  
10 532 18 00-65 Gear, Pinion  
11 532 18 77-14 Rod, Clutch  
12 532 18 00-66 Shaft, Long, Hex  
13 532 17 88-07 Pin, Pivot  
14 532 18 40-80 Lever, Shifter / Wheel  
15 532 17 53-44 Trunnion Bearing Assembly  
16 532 18 78-57 Bracket, Pivot, Shift  
17 532 17 98-31 Ring, Rubber Wheel  
18 532 18 40-78 Plate, Rubber Wheel  
19 873 93 05-00 Nut, Lock 5/16-18  
20 532 17 86-13 Hub, Rubber Wheel  
21 874 76 05-14 Screw, Hex Head 5/16-18 x 7/8  
22 532 08 51-79 Retainer, Hairpin  
23 532 18 01-35 Spring, Bias  
24 532 18 00-81 Gear, Axle (58 Teeth)  
25 532 17 86-95 Pin, Pivot Lever  
26 532 17 53-41 Plate Assembly, Drive  
27 532 17 93-52 Shaft, Axle  
28 532 17 53-40 Shaft, Short Hex  
29 532 18 40-77 Lever, Shifter Plate  
30 532 18 40-76 Bracket, Shifter Support  
31 872 27 05-05 Bolt, Carriage 5/16-18 x 5/8  
32 532 17 88-79 Key, Square 1/4 x 1/4 x 7/8  
33 532 17 53-23 Bearing, Flange  
34 532 18 40-75 Plate, Drive Mounting  
35 532 18 25-04 Spacer, Bearing  
36 532 17 53-48 Pulley, Traction Drive  
37 532 15 53-77 Nut, Lock 5/16-18  
38 819 11 15-07 Washer, Flat  
39 810 04 05-00 Washer, Lock 5/16  
40 874 95 05-12 Screw, Hex Head 5/16-18 x 3/4  
41 812 00 00-12 Ring, Retaining  
43 532 17 90-95 Spring, Return  
44 532 18 42-06 Pin, Roll  
NOTE: All component dimensions given in U.S. inches  
1 inch = 25.4 mm  
27  
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REPAIR PARTS  
CHASSIS / ENGINE / PULLEYS  
SNOW THROWER - - MODEL NO. 524ST (HL524STA), PRODUCT NO. 954 63 35-52  
3
30  
17  
28  
22  
6
19  
10  
23  
21  
6
31  
10  
21  
24  
29  
25  
26  
4
31  
38  
27  
41  
32  
18 20  
6
7
16  
2
41  
39  
37  
36  
42  
9
43  
1
14  
5
7
8
11  
6
13  
33  
34  
41  
44  
6
26  
45  
15  
12  
35  
44  
40  
50  
51  
11  
26  
52  
49  
11  
54  
53  
48  
11  
46  
47  
28  
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REPAIR PARTS  
CHASSIS / ENGINE / PULLEYS  
SNOW THROWER - - MODEL NO. 524ST (HL524STA), PRODUCT NO. 954 63 35-52  
KEY PART  
NO. NO.  
DESCRIPTION  
1
2
3
532 18 10-44 Spring, Traction Idler  
532 18 05-22 Pulley, Idler (2-1/4)  
- - -  
Engine, Tecumseh, Model Number HSSK55  
(Order parts from Engine manufacturer)  
4
5
6
7
8
9
874 78 05-20 Screw, Hex Head 5/16-18 x 1-1/4  
532 15 00-78 Screw, Hex Washer Head 5/16-18 x 3/4  
532 05 92-89 Washer, Flat  
873 93 05-00 Nut, Jam, Lock 5/16-18  
532 17 53-30 Pin, Idler Pivot  
532 17 90-92 V-Belt, Traction Drive  
10 810 04 05-00 Washer, Lock 5/16  
11 817 49 05-08 Screw, Hex Head 5/16-18 x 1/2  
12 532 17 92-59 Idler Arm Assembly, Impeller  
13 532 08 51-79 Retainer, Hairpin  
14 532 17 88-28 Spring, Brake  
15 532 18 35-33 V-Belt, Impeller Drive  
16 532 15 04-06 Screw, Hex Head 3/8-16 x 1-1/4  
17 532 18 48-04 Arm, Idler  
18 874 78 05-24 Screw, Hex Head 5/16-18 x 1-1/2  
19 532 17 53-31 Bushing, Idler Pivot  
20 532 18 05-23 Pulley, Idler (2-3/4)  
21 874 61 05-16 Screw, Hex Head 5/16-24 x 1  
22 532 17 93-71 Spacer, Engine Pulley  
23 532 18 04-78 Pulley, Engine, Traction Drive  
24 532 17 91-57 Pulley, Engine, Impeller Drive  
25 532 06 27-35 Washer, Flat 3/8  
26 532 85 02-63 Washer, Lock 3/8  
27 532 85 10-84 Screw, Hex Head 3/8-24 x 1-3/8  
28 532 18 35-61 Guide, Belt  
29 532 18 04-65 Cover, Belt  
30 532 17 88-30 Cover, Toolbox  
31 817 49 04-08 Screw, Hex Head 1/4-20 x 1/2  
32 532 17 92-56 Bolt, Shoulder 5/16-18  
33 532 18 78-53 Bellcrank Shifter  
34 532 18 04-01 Screw, Hex Head 1/4-28 x 3/4  
35 532 17 92-40 Arm, Auger Control  
36 873 80 05-00 Nut, Lock 5/16-18  
37 532 18 40-86 Bellcrank Assembly  
38 532 18 71-01 Link, Speed Control  
39 532 17 90-64 Trunnion, Clutch  
40 532 17 88-90 Nut, Cage 3/8-16  
41 532 70 02-79 Hairpin, Cotter 3/32 x 1/2  
42 532 17 90-65 Pin, Bellcrank  
43 532 18 40-85 Bracket, Bellcrank  
44 874 78 06-24 Screw, Hex Head 3/8-16 x 1-1/2  
45 532 18 40-74 Pivot Bracket, Impeller Idler Arm  
46 532 18 40-84 Pan, Frame Bottom  
47 871 02 05-12 Screw, Hex Head 5/16-18 x 3/4  
48 532 18 11-56 Nut, Speed 5/16-18  
49 532 18 40-73 Frame Assembly  
50 532 18 80-02 Plate, Frame End  
51 532 18 40-82 Shaft, Auger Control  
52 532 05 70-79 Washer, Hardened  
53 532 17 90-62 Roller  
54 812 00 00-10 Ring, Retaining  
NOTE: All component dimensions given in U.S. inches. 1 inch = 25.4 mm  
29  
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REPAIR PARTS  
WHEELS / DECALS  
SNOW THROWER - - MODEL NO. 524ST (HL524STA), PRODUCT NO. 954 63 35-52  
2
1
4
5
6
4
6
3
4
2
5
4
1 10  
2
4
9
8
6
7
5
3
1 10  
30  
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REPAIR PARTS  
WHEELS / DECALS  
SNOW THROWER - - MODEL NO. 524ST (HL524STA), PRODUCT NO. 954 63 35-52  
KEY PART  
NO. NO.  
DESCRIPTION  
1
2
3
4
5
6
532 18 78-31 Wheel Assembly, 13", LH  
532 15 54-43 Pin, Klik 1/4  
532 18 78-66 Wheel Assembly, 13", RH  
532 14 63-15 Screw, Hex Head 5/16-18 x 5/8  
532 17 98-30 Bearing, Axle  
532 17 46-97 Washer, Thrust, 1"  
NOTE: All component dimensions given in U.S. inches  
1 inch = 25.4 mm  
KEY PART  
NO. NO.  
DESCRIPTION  
1
2
3
4
5
6
7
8
9
532 18 10-38 Decal, Danger  
532 18 79-11 Decal, Husqvarna  
532 18 10-34 Decal, Danger, Deflector  
532 18 10-41 Decal, Danger  
532 18 86-75 Decal, Husqvarna, 524ST  
532 18 10-32 Decal, Instruction  
532 15 57-98 Decal, Traction Lever  
532 15 58-00 Decal, Auger Lever  
532 18 10-36 Decal, Speed Control  
10 532 15 57-94 Decal, Husqvarna, Crown (2)  
- - 532 18 78-25 Owner’s Manual  
NOTE: All component dimensions given in U.S. inches  
1 inch = 25.4 mm  
31  
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532 18 78-25 Rev. 4 03.03.04 BY  
Printed in U.S.A.  
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