MTD 31AS6WEG700 Owner’s Manual

Safe Operation Practices • Set-Up • Operation • Maintenance • Service • Troubleshooting • Warranty

L

600-Series Snow Thrower m E/F Style

MTD LLC, P.O. BOX 361131 CLEVELAND, OHiO 44136-0019

PrintedIn USA FormNo.769-04031

(June17,2008)

ToTheOwner

ThankYou

1

Thank you for purchasing a Snow Thrower manufactured by
MTD LLC. It was carefully engineered to provide excellent

performance when properly operated and maintained.
Please read this entire manual prior to operating the equipment.

It instructs you how to safely and easily set up, operate and
maintain your machine. Please be sure that you, and any other
persons who will operate the machine, carefully follow the
recommended safety practices at all times. Failure to do so could

result in personal injury or property damage.
All information in this manual is relative to the most recent

product information available at the time of printing. Review
this manual frequently to familiarize yourself with the unit, its

features and operation. Please be aware that this Operator's
Manual may cover a range of product specifications for various

models. Characteristics and features discussed and/or illustrated
in this manual may not be applicable to all models. MTD LLC

reserves the right to change product specifications, designs and
equipment without notice and without incurring obligation.

Tableof Contents

Important Safe Operation Practices ...................... 3

Assembly & Set-Up .................................................. 7

Controls & Features ................................................ 11

Operation ................................................................ 14

If you have any problems or questions concerning the machine,
phone your local authorized MTD service dealer or contact us

directly. MTD's Customer Support telephone numbers, website
address and mailing address can be found on this page. We want
to ensure your complete satisfaction at all times.

Throughout this manual, all references to right and left side of the
machine are observed from the operating position.

The engine manufacturer is responsible for all engine-related
issues with regards to performance, power-rating, specifications,
warranty and service. Please refer to the engine manufacturer's
Owner's/Operator's Manual, packed separately with your

machine, for more information.

Maintenance & Adjustment. ................................. 16

Service ..................................................................... 19

Troubleshooting .................................................... 23

Replacement Parts ................................................ 24

RecordProductinformation

Before setting up and operating your new equipment, please
locate the model plate on the equipment and record the

information in the provided area to the right. You can locate the
model plate by standing at the operator's position and looking

at the lower, rear section of the frame. This information will be
necessary, should you seek technical support via our web site,

Customer Support Department, or with a local authorized service
dealer.

MODEL NUMBER

DDDDDDDDDDD

SERIAL NUMBER

DNDNDNDNDND

CustomerSupport

Please do NOT return the unit to the retailer or dealer without first contacting our Customer Support Department.

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:

0 Visit us on the web at www.mtdproducts.com

0 Call a Customer Support Representative at [phone] or [phone]

0 Write us at MTD LLC • EO. Box 361131 • Cleveland, OH •44136-0019

ImportantSafeOperationPractices

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 manual before attempting to operate this machine. Failure to comply

with these instructions may result in personal injury.
When you see this symbol. HEED ITS WARNING!

CALIFORNIA PROPOSITION 65

WARNING! Engine Exhaust, some of its constituents, and certain vehicle components

contain or emit chemicals known to State of California to cause cancer and birth defects
or other reproductive harm.

DANGER: This machine was built to be operated according to the safe operation practices in

this manual. As with any type of power equipment, carelessness or error on the part of the

operator can result in serious injury. This machine is capable of amputating fingers, hands,

toes and feet and throwing foreign objects. Failure to observe the following safety

instructions could result in serious injury or death.

2

Training Preparation

1. Read, understand, and follow all instructions on the
machine and in the manual(s) before attempting to
assemble and operate. Keep this manual in a safe place for
future and regular reference and for ordering replacement
pa rts.

2. Be familiar with all controls and their proper operation.
Know how to stop the machine and disengage them

quickly.

3. Never allow children under 14 years of age to operate this
machine. Children 14 and over should read and understand

the instructions and safe operation practices in this manual
and on the machine and be trained and supervised by an

adult.

4. Never allow adults to operate this machine without proper
instruction.

5. Thrown objects can cause serious personal injury. Plan
your snow-throwing pattern to avoid discharge of material

toward roads, bystanders and the like.

6. Keep bystanders, pets and children at least 75 feet from the
machine while it is in operation. Stop machine if anyone

enters the area.
Exercise caution to avoid slipping or falling, especially

when operating in reverse.

Thoroughly inspect the area where the equipment is to be used.
Remove all doormats, newspapers, sleds, boards, wires and other

foreign objects, which could be tripped over or thrown by the
auger/impeller.

1. Always wear safety glasses or eye shields during operation
and while performing an adjustment or repair to protect
your eyes. Thrown objects which ricochet can cause serious

injury to the eyes.

2. Do not operate without wearing adequate winter outer
garments. Do not wear jewelry, long scarves or other loose

clothing, which could become entangled in moving parts.
Wear footwear which will improve footing on slippery

surfaces.

3. Use a grounded three-wire extension cord and receptacle
for all machines with electric start engines.

4. Adjust collector housing height to clear gravel or crushed
rock surfaces.

5. Disengage all control levers before starting the engine.

6. Never attempt to make any adjustments while engine is
running, except where specifically recommended in the
operator's manual.

7. Let engine and machine adjust to outdoor temperature
before starting to clear snow.

SafeHandling of Gasoline

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 container.
b. Extinguish all cigarettes, cigars, pipes and other

sources of ignition.
Never fuel machine indoors.

C.

d.

Never remove gas cap or add fuel while the engine is
hot or running.

e. Allow engine to cool at least two minutes before

refueling.

f. Never over fill fuel tank. Fill tank to no more than 1/2

inch below bottom of filler neck to provide space for

fuel expansion.
g. Replace gasoline cap and tighten securely.
h. If gasoline is spilled, wipe it off the engine and

equipment. Move machine to another area. Wait 5

minutes before starting the engine.
i. Never store the machine or fuel container inside

where there is an open flame, spark or pilot light

(e.g. furnace, water heater, space heater, clothes

dryer etc.).

j. Allow machine to cool at least 5 minutes before

storing.
k. Never fill containers inside a vehicle or on a truck

or trailer bed with a plastic liner. Always place

containers on the ground away from your vehicle

before filling.
I. If possible, remove gas-powered equipment from

the truck or trailer and refuel it on the ground. If this

is not possible, then refuel such equipment on a

trailer with a portable container, rather than from a

gasoline dispenser nozzle.
m. Keep the nozzle in contact with the rim of the fuel

tank or container opening at all times until fueling is

complete. Do not use a nozzle lock-open device.

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. Keep children away.

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
operating 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 discharge 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. When starting engine, pull cord slowly until resistance
is felt, then pull rapidly. Rapid retraction of starter cord

(kickback) will pull hand and arm toward engine faster than
you can let go. Broken bones, fractures, bruises or sprains

could result.

21.

If situations occur which are not covered in this manual, use
care and good judgment. Contact Customer Support for
assistance and the name of your nearest servicing dealer.

4 J SECTION 2 -- IMPORTANT SAFE OPERATION PRACTICES

Maintenance& Storage

1. Never tamper with safety devices. Check their proper
operation regularly. Refer to the maintenance and

adjustment sections of this manual.

2. Before cleaning, repairing, or inspecting machine
disengage 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 control levers 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
necessary.

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.

12. Check fuel line, tank, cap, and fittings frequently for cracks
or leaks. Replace if necessary.

13. Do not crank engine with spark plug removed.

14. According to the Consumer Products Safety Commission
(CPSC) and the U.S. Environmental Protection Agency (EPA),
this product has an Average Useful Life of seven (7) years,

or 60 hours of operation. At the end of the Average Useful
Life have the machine inspected annually by an authorized
service dealer to ensure that all mechanical and safety
systems are working properly and not worn excessively.
Failure to do so can result in accidents, injuries or death.

Donot 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.

NoticeRegardingEmissions

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
Modification (EM), Oxidizing Catalyst (OC), Secondary Air
Injection (SAI) and Three Way Catalyst (TWC) if so equipped.

SparkArrestor

internal combustion engine and should not be used

i_li WARNING! This machine is equipped with an

Ira spark arrester is used, it should be maintained 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 attester 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.

on or near any unimproved forest-covered, brush
covered or grass-covered land unless the engine's

exhaust system is equipped with a spark arrester

meeting applicable local or state laws (if any).

SECTION 2 -- IMPORTANT SAFE OPERATION PRACTICES S

Safety Symbols

This page depicts and describes safety symbols that may appear on this product. Read, understand, and follow all instructions on the
machine before attempting to assemble and operate.

READ THE OPERATOR'S MANUAL(S)
Read, understand, and follow all instructions in the manual(s) before attempting to

assemble and operate

WARNING-- ROTATING BLADES

Keep hands out of inlet and discharge openings while machine is running. There are rotating
blades inside

WARNING-- ROTATING BLADES

Keep hands out of inlet and discharge openings while machine is running. There are rotating
blades inside

WARNING-- ROTATING AUGER

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.

........!i........

WARNING--THROWN OBJECTS
This machine may pick up and throw and objects which can cause serious personal injury.

WARNING--GASOLINE IS FLAMMABLE
Allow the engine to cool at least two minutes before refueling.

WARNING-- CARBON MONOXIDE

Never run an engine indoors or in a poorly ventilated area. Engine exhaust contains carbon
monoxide, an odorless and deadly gas.

WARNING-- ELECTRICAL SHOCK

Do not use the engine's electric starter in the rain

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.

6 I SECTION 2 -- IMPORTANT SAFE OPERATION PRACTICES

SAVETHESEINSTRUCTIONS!

Assembly& Set-Up

Contentsof Carton

3

One Snow Thrower
One Snow Thrower Operator's

Manual

Two Replacement Auger Shear Pins

One Briggs & Stratton Engine
Operator's Manual

Assembly

Handle

1. Place the shift lever in the Forward-6 position

2. Observe the lower rear area of the snow thrower to be sure
both cables are aligned with roller guides before pivoting

the handle upward. See Fig. 3-1.

One Chute Assembly
One Product Registration Card

Figure 3-1

NOTE: Make certain the upper ends of each cable are
seated properly in its bracket.

3.

Secure the handle by tightening the plastic knob located
on both the left and right sides of the handle. Remove
and discard any rubber bands, if present. They are for
packaging purposes only.

ChuteAssembly

1. Position the chute assembly over the base. See Fig. 3-2.

2. Close the flange keepers to secure the chute assembly
to the chute base. The flange keepers will click into place

when properly secure. See Fig. 3-3.
NOTE: If the flange keepers will not easily click into place,

use the palm of your hand to apply swift, firm pressure to
the back of each.

Figure 3-3

ChuteDirectional Control

1. Remove the plastic cap (if present), flat washer and hairpin
clip from the end of the chute directional control. See Fig.

3-4.

ChuteClean-OutTool

The chute clean-out tool is fastened to the top of the auger
housing with a mounting clip and a cable tie at the factory. Cut
the cable tie before operating the snow thrower. See Fig. 3-6.

Figure 3-4

2. Insert the end of the chute directional control into the

lower bracket and secure with the flat washer and hairpin
clip just removed. If necessary, the lower bracket can be
adjusted. Refer to Chute Bracket Adjustment on Page 16.

Set-Up

ShearPins

A pair of replacement auger shear pins and bow tie cotter pins
are included with your snow thrower. See Fig. 3-5 Store them in a
safe place until needed.

Figure 3-6

TirePressure

Before operating, check tire pressure and reduce pressure in both
tires to between 15 psi and 20 psi.

NOTE: If the tire pressure is not equal in both tires, the machine
may not travel in a straight path and the shave plate may wear

unevenly.

6as& 0il Fill-Up

gasoline. Gasoline is extremely flammable and the

_i ARNING! Use extreme care when handling

Service the engine with gasoline and oil as instructed in the
Briggs & Stratton Engine Operator's Manual packed separately
with your snow thrower. Read instructions carefully.

NOTE:Your snow thrower is shipped with oil in the engine.
However, you MUST check the oil level before operating. Refer

to Briggs & Stratton Engine Operator's Manual for detailed
instructions.

vapors are explosive. Never fuel the machine

indoors or while the engine is hot or running.
Extinguish cigarettes, cigars, pipes and other
sources of ignition.

Figure 3-5

8 I SECTION3-- ASSEMBLY& SET-UP

Adjustments

SkidShoes

The snow thrower skid shoes are adjusted upward at the factory
for shipping purposes. Adjust them downward, if desired, prior

to operating the snow thrower.

i_ CAUTION: It is not recommended thatyou operate

NOTE: If you choose to operate the snow thrower on a gravel
surface, keep the skid shoes in position for maximum clearance

between the ground and the shave plate.
To adjust the skid shoes:

1. Loosen the four hex nuts (two on each side) and carriage

this snow thrower on gravel as it can easily pick up
and throw loose gravel, causing personal injury or

damage to the snow thrower and surrounding
property.

For close snow removal on a smooth surface, raise skid
shoes higher on the auger housing.

Use a middle or lower position when the area to be cleared
is uneven, such as a gravel driveway

bolts. Move skid shoes to desired position. See Fig. 3-7.

ChuteAssembly

The distance snow is thrown can be adjusted by changing the
angle of the chute assembly. To do so:

1. Stop the engine by removing the ignition key and loosen
the plastic knob found on the left side of the chute

assembly.

2. Pivot the chute upward or downward before retightening
the wing knob. See Fig. 3-8.

Figure 3-7

2. Make certain the entire bottom surface of skid shoe is
against the ground to avoid uneven wear on the skid shoes.

3. Retighten nuts and bolts securely.

J

Figure 3-8

SECTION 3 -- ASSEMBLY& SET-UP 9