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5

Operation

1.  Do not put hands or feet near rotating parts, in the 

auger/impeller housing or chute assembly. Contact with the 
rotating parts can amputate hands and feet. 

2.  The auger/impeller control lever is a safety device. Never 

bypass its operation. Doing so makes the machine unsafe 
and may cause personal injury. 

3.  The control levers must operate easily in both directions 

and automatically return to the disengaged position when 
released. 

4.  Never operate with a missing or damaged chute assembly. 

Keep all safety devices in place and working.

5.  Never run an engine indoors or in a poorly ventilated area. 

Engine exhaust contains carbon monoxide, an odorless and 
deadly gas. 

6.  Do not operate machine while under the influence of alcohol 

or drugs. 

7.  Muffler and engine become hot and can cause a burn. Do 

not touch.

8.  Exercise extreme caution when operating on or crossing 

gravel surfaces. Stay alert for hidden hazards or traffic.

9.  Exercise caution when changing direction and while operat-

ing on slopes. 

10. Plan your snow-throwing pattern to avoid discharge towards 

windows, walls, cars etc. Thus, avoiding possible property 
damage or personal injury caused by a ricochet. 

11. Never direct discharge at children, bystanders and pets or 

allow anyone in front of the machine. 

12. Do not overload machine capacity by attempting to clear 

snow at too fast of a rate.

13. Never operate this machine without good visibility or light. 

Always be sure of your footing and keep a firm hold on the 
handles. Walk, never run.

14. Disengage power to the auger/impeller when transporting or 

not in use.

15. Never operate machine at high transport speeds on slippery 

surfaces. Look down and behind and use care when 
backing up. 

16. If the machine should start to vibrate abnormally, stop the 

engine, disconnect the spark plug wire and ground it against 
the engine. Inspect thoroughly for damage. Repair any 
damage before starting and operating.

17. Disengage all control levers and stop engine before you 

leave the operating position (behind the handles). Wait 
until the auger/impeller comes to a complete stop before 
unclogging the chute assembly, making any adjustments, or 
inspections. 

18. Never put your hand in the discharge or collector openings. 

Always use the clean-out tool provided to unclog the dis-
charge opening. Do not unclog chute assembly while engine 
is running. Shut off engine and remain behind handles until 
all moving parts have stopped before unclogging.

19. Use only attachments and accessories approved by the 

manufacturer (e.g. wheel weights, tire chains, cabs etc.).

20. If situations occur which are not covered in this manual, 

use care and good judgment. Contact your dealer or call 
(800) 800-7310 for assistance and the name of your nearest 
servicing dealer..

Maintenance & Storage

1.  Never tamper with safety devices. Check their proper 

operation regularly. Refer to the maintenance and adjust-
ment sections of this manual.

2.  Before cleaning, repairing, or inspecting machine disen-

gage all control levers and stop the engine. Wait until the 
auger/impeller come to a complete stop. Disconnect the 
spark plug wire and ground against the engine to prevent 
unintended starting. 

3.  Check bolts and screws for proper tightness at frequent 

intervals to keep the machine in safe working condition. 
Also, visually inspect machine for any damage. 

4.  Do not change the engine governor setting or over-speed 

the engine. The governor controls the maximum safe 
operating speed of the engine.

5.  Snow thrower shave plates and skid shoes are subject to 

wear and damage. For your safety protection, frequently 
check all components and replace with original equipment 
manufacturer’s (OEM) parts only. “Use of parts which do 
not meet the original equipment specifications may lead to 
improper performance and compromise safety!”

6.  Check controls periodically to verify they engage and 

disengage properly and adjust, if necessary. Refer to the 
adjustment section in this operator’s manual for instructions.

7.  Maintain or replace safety and instruction labels, as neces-

sary.

8.  Observe proper disposal laws and regulations for gas, oil, 

etc. to protect the environment.

9.  Prior to storing, run machine a few minutes to clear snow 

from machine and prevent freeze up of auger/impeller.

10. Never store the machine or fuel container inside where 

there is an open flame, spark or pilot light such as a water 
heater, furnace, clothes dryer etc.

11. Always refer to the operator’s manual for proper instructions 

on off-season storage.

Do not modify engine

To avoid serious injury or death, do not modify engine in any 
way. Tampering with the governor setting can lead to a runaway 
engine and cause it to operate at unsafe speeds. Never tamper 
with factory setting of engine governor.

Notice regarding Emissions

Engines which are certified to comply with California and federal 
EPA emission regulations for SORE (Small Off Road Equipment) 
are certified to operate on regular unleaded gasoline, and may 
include the following emission control systems: Engine Modifica-
tion (EM) and Three Way Catalyst (TWC) if so equipped.

Your Responsibility

Restrict the use of this power machine to persons who read, un-
derstand and follow the warnings and instructions in this manual 
and on the machine. 

2

Safe  

Operation 

Practices

WARNING

This symbol points 
out important safety 
instructions, which if 
not followed, could 
endanger the personal 
safety and/or property 
of yourself and others. 
Read and follow all 
instructions in this man-
ual before attempting to 
operate this machine. 
Failure to comply with 
these instructions may 
result in personal injury. 
When you see this 
symbol.

HEED IT’S WARNING!

Your Responsibility

 

Restrict the use 
of this power machine 
to persons who read, 
understand 
and follow the warnings 
and instructions 
in this manual 
and on the machine. 

Summary of Contents for 3AA

Page 1: ...ed in effective working order by the operator In the State of California the above is required by law Section 4442 of the California Public Resources Code Other states may have similar laws Federal laws apply on federal lands A spark arrester for the muffler is available through your nearest engine authorized service dealer or contact the service department P O Box 361131 Cleveland Ohio 44136 0019...

Page 2: ...epare and maintain the unit for best performance Please read and understand what it says Customer Support If you have difficulty assembling this product or have any questions regarding the controls operation or maintenance of this unit you can seek help from the experts Choose from the options below 1 Visit mtdproducts com Click on the Service Support menu option 2 Phone a Customer Support Represe...

Page 3: ...ers Read and follow all instructions in this manual before at tempting to operate this machine Failure to comply with these instructions may result in personal injury When you see this symbol HEED ITS WARNING Your Responsibility Restrict the use of this power machine to persons who read understand and follow the warnings and instructions in this manual and on the machine ...

Page 4: ...e and machine adjust to outdoor temperature before starting to clear snow 9 To avoid personal injury or property damage use extreme care in handling gasoline Gasoline is extremely flammable and the vapors are explosive Serious personal injury can occur when gasoline is spilled on yourself or your clothes which can ignite Wash your skin and change clothes immediately a Use only an approved gasoline...

Page 5: ...fety devices Check their proper operation regularly Refer to the maintenance and adjust ment sections of this manual 2 Before cleaning repairing or inspecting machine disen gage all control levers and stop the engine Wait until the auger impeller come to a complete stop Disconnect the spark plug wire and ground against the engine to prevent unintended starting 3 Check bolts and screws for proper t...

Page 6: ...o Figure 1 Clean Out Tool This tool and the electric extension cord if so equipped may be fastened with a cable tie to the rear of the auger housing for shipping purposes In that case cut the cable tie and remove the extension cord now Final Adjustments IMPORTANT Check the adjustments as instructed and make any final adjustments necessary before operating the unit Check all nuts and bolts for tigh...

Page 7: ...d to avoid uneven wear on the skid shoes 3 Tighten nuts and bolts securely Routing The Drive Cable 1 Make sure that the drive cable is routed parallel to the left upper handle then across the top of the lower handle and finally parallel to the right lower handle See Figure 5 2 Three cable ties have been used to loosely tie the two control cables to the lower handle Two of these cable ties are on e...

Page 8: ...wing corresponds to the direction of the chute opening Use the chute handle to turn the chute assembly in the direction you wish to throw the snow Chute Knob The distance snow is thrown can be adjusted by either raising or lowering the upper chute Loosen the chute knob on the side of the upper chute to adjust Pivot the upper chute to desired position and retighten the chute knob Ignition Key The i...

Page 9: ...rounded at all times to avoid the possibility of electric shock to the operator If your house wiring system is not a three wire grounded system do not use this electric starter under any conditions WARNING and free from rust or other foreign particles Make sure to wipe off any spilled fuel before starting the engine 6 At the end of the job empty the fuel tank if the snow thrower is not going to be...

Page 10: ... button and slowly rotate the choke to OFF position If the engine falters rotate the choke to FULL and then gradually to OFF NOTE When engaging the electric starter a slight hesitation of a few seconds may occur before the engine starts to turn This is normal and is not harmful to the engine 14 Disconnect the power cord from the receptacle first and then from the switch box on the engine 15 Allow ...

Page 11: ...he drive control 6 As the snow thrower starts to move maintain a firm hold on the handle and guide the snow thrower along the path to be cleared 7 Release the auger and drive controls to stop the snow throwing action and forward motion NOTE Your unit is equipped with a clutch in the transmis sion If the wheels stop turning while trying to discharge large volumes of snow immediately disengage the d...

Page 12: ...install skid shoes Tighten securely Servicing Augers The augers are secured to the spiral shaft with four shear pins and cotter pins If you hit a foreign object or ice jam the snow thrower is designed so that the pins may shear Refer to Figure 9 If the augers do not turn check if the pins have sheared Replace if needed with proper shear pins Refer to item 42 on page 17 for part number IMPORTANT NE...

Page 13: ...g it forward and rolling in off of the pulley See Figure 12 2 Squeeze the auger control handle to release the auger brake which is the tab that holds the belt onto the auger pulley Remove the belt 3 Replace with new belt after replacing the drive belt Drive Belt NOTE Replace the drive belt before reassembling the new auger belt 1 Tip the snow thrower up and forward so that it rests on the auger ho...

Page 14: ...ower with fuel in tank indoors or in poorly ventilated areas where fuel fumes may reach an open flame spark or pilot light as on a furnace water heater clothes dryer or gas appliance NOTE It is important to prevent gum deposits from forming in essential fuel system parts of the engine such as the carburetor fuel filter fuel hose or tank during storage CAUTION Alcohol blended fuels called gasohol o...

Page 15: ...wire disconnected 5 Faulty spark plug 6 Engine not primed 7 Engine flooded from excessive priming Problem Possible Cause s Solution 1 Fill tank with clean fresh gasoline 2 Clean fuel line 3 Insert key See Ignition Key on Page 8 4 Connect wire to spark plug 5 Clean spark plug readjust gap or replace 6 Prime engine four times 7 Wait at least ten minutes before starting 1 Move choke lever to OFF posi...

Page 16: ...e call 1 800 800 7310 or 1 330 220 4683 www mtdproducts com Part List Dual Stage Snow Thrower 4 9 18 34 22 32 47 33 28 20 30 31 24 25 27 10 38 3 21 15 12 13 16 46 3 20 45 23 35 8 5 17 11 14 20 3 26 19 44 29 41 43 36 42 39 40 37 20 7 6 3 2 1 ...

Page 17: ...e Lock Nut 3 8 16 1 22 712 0266 Hex Lock Nut 3 8 16 1 23 715 04020 Spiral Pin 2 For parts and or accessories please call 1 800 800 7310 or 1 330 220 4683 www mtdproducts com Part List Dual Stage Snow Thrower REF NO PART NUMBER DESCRIPTION Qty 24 726 04012 Push On Nut 2 25 731 04218B Impeller 1 26 732 0611 Extension Spring 1 27 736 0174 Wave Washer 1 28 738 0281 Shoulder Screw 3 8 16 1 29 741 0245 ...

Page 18: ...18 2 4 5 55 1 13 3 9 8 10 12 11 39 21 23 24 40 43 49 47 51 51 51 51 48 46 45 44 50 41 14 4 15 31 27 30 16 29 15 32 42 38 18 20 22 28 16 37 53 52 54 36 33 17 26 25 19 34 35 7 6 ...

Page 19: ...1 For parts and or accessories please call 1 800 800 7310 or 1 330 220 4683 www mtdproducts com Part List Dual Stage Snow Thrower REF NO PART NUMBER DESCRIPTION Qty 28 741 0245 Hex Flange Bearing 2 29 741 04108 Hex Flange Bearing 2 30 756 0625 Cable Roller 1 31 784 0419B Drive Housing Frame 1 32 790 00223 Auger Cable Bracket 1 33 790 00224 Auger Cable Adj Bracket 1 34 634 0232A Wheel Assbly Snow H...

Page 20: ...f the exterior finish due to use or exposure d Service completed by someone other than an authorized service dealer e MTD does not extend any warranty for products sold or exported outside of the United States its possessions and territories except those sold through MTD s authorized channels of export distribution f Replacement parts that are not genuine MTD parts g Transportation charges and ser...

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