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MTD 140 Series User manual

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OPERATOR'S MANUAL
Single-Stage
Snow Thrower
Models 140
150
160
IMPORTANT:Read safety rules and instructions carefully before operating equipment.
Warning: This unit is equipped with an internal combustion engine and should not be used 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). If a 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 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.
MTD LLC, P.O.BOX361131CLEVELAND,OHIO44136-0019
PRINTED IN U.S.A. FORM NO. 769-00805
(7/2003)
TABLEOFCONTENTS
Content Page
Important Safe Operation Practices ......................................................................................... 3
Assembling Your Snow Thrower .............................................................................................. 5
Know Your Snow Thrower ........................................................................................................ 6
Operating Your Snow Thrower ................................................................................................. 7
Making Adjustments ................................................................................................................. 8
Maintaining Your Snow Thrower .............................................................................................. 8
Off-Season Storage ................................................................................................................. 9
Troubleshooting ....................................................................................................................... 10
Accessories & Kits ................................................................................................................... 11
Parts List .................................................................................................................................. 12
FINDINGMODELNUMBER
This Operator's Manual is an important part of your new snow thrower. It will help you to assemble, prepare and
maintain the unit for best performance. Please read and understand what it says.
Before you start assembling your new snow thrower, please locate the model plate on the
equipment and copy the information from it in the space provided below. The information on the
model plate is very important if you need help from our Customer Support Department or an
authorized dealer.
You can locate the model number by standing behind the unit in the operating position and looking down at
the dash panel. A sample model plate is explained below. For future reference, please copy the model
number and the serial number of the equipment in the space below.
ModelNumber
Serial Number
'_ WITB LLC
P. O. 80X 361131
CLEVELAND,OH 44136
330-220-4683
,, www.mtdproducts.com 800-800-731 O .)
Copy the model number here:
Copy the serial number here:
ENGINEINFORMATION
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 unit for more information.
CALLINGCUSTOMERSUPPORT
Please doNOTreturnthe unittotheretailer fromwhichit waspurchased,withoutfirstcontactingCustomerSupport.
Should you have difficulty assembling this product or have any questions regarding the controls, operation or
maintenance of this unit, please call the Customer Support Department.
Call 1- (330) 220-4MTD (4683) or 1- (800) 800-7310 to reach a Customer Support representative.
Please have your unit's model number and serial number ready when you call. See previous section
to locate this information. You will be asked to enter the serial number in order to process your call.
SECTION1: 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.
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 rules for safe operation 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 hands and feet and throwing objects. Failure to observe the following safety
instructions could result in serious injury or death.
Training
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 asafe place
for future and regular reference and for ordering
replacement parts.
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 old to operate this
machine. Children 14 years old and over should read and
understand the operation instructions and safety rules in
this manual and should be trained and supervised by a
parent.
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, helpers, pets and children at least 75
feet from the machine while it is in operation. Stop
machine if anyone enters the area.
7. Exercise caution to avoid slipping or falling, especially
when operating in reverse.
Preparation
1. Thoroughly inspect the area where the equipment is to
be used. Remove all door mats, newspapers, sleds,
boards, wires and other foreign objects which could be
tripped over or thrown by the auger/impeller.
2. 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.
3. 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.
4. Use atwo prong polarized wire extension cord and
receptacle for all units with electric start engines.
5. Adjust collector housing height to clear gravel or crushed
rock surfaces.
6. Disengage the control handle before starting the engine.
7. Never attempt to make any adjustments while engine is
running, except where specifically recommended in the
operator's manual.
8. Let engine 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 container.
b. Extinguish all cigarettes, cigars, pipes and other
sources of ignition.
c. Neverfuel machine indoors.
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 fitt fuel tank. Fill tank to no more than
½ inch below bottom of filler neck to provide space
for fuel expansion.
g. Replace gasoline cap and tighten securely.
h. Ifgasoline 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.
Operation
1. Do not put hands or feet near rotating parts, in the auger/
impeller housing or discharge chute. Contact with the
rotating parts can amputate hands and feet.
2. The auger/impeller control handle is a safety device.
Never bypass its operation. Doing so, makes the
machine unsafe and may cause personal injury.
3. The control handle must operate easily in both directions
and automatically return to the disengaged position when
released.
4. Never operate with a missing or damaged discharge
chute. 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. Mufflerandenginebecomehotandcancauseaburn.Do
nottouch.
8. Exerciseextremecautionwhenoperatingonorcrossing
gravelsurfaces.Stayalertforhiddenhazardsortraffic.
9. Exercisecautionwhenchangingdirectionandwhile
operatingonslopes.
10.Planyoursnowthrowingpatterntoavoiddischarge
towardswindows,walls,carsetc.Toavoidproperty
damageorpersonalinjurycausedbyaricochet.
11.Neverdirectdischargeatchildren,bystandersandpets
orallowanyoneinfrontofthemachine.
12.Donotoverloadmachinecapacitybyattemptingtoclear
snowattoofastofarate.
13.Neveroperatethismachinewithoutgoodvisibilityor
light.Alwaysbesureofyourfootingandkeepafirmhold
onthehandles.Walk,neverrun.
14.Disengagepowertotheauger/impellerwhen
transportingornotinuse.
15.Neveroperatemachineathightransportspeedson
slipperysurfaces.Lookdownandbehindandusecare
wheninreverse.
16.Ifthemachineshouldstarttovibrateabnormally,stopthe
engine,disconnectthesparkplugandgrounditagainst
theengine.Inspectthoroughlyfordamage.Repairany
damagebeforestartingandoperating.
17.Disengagethecontrolhandleandstopenginebeforeyou
leavetheoperatingposition(behindthehandles).Wait
untiltheauger/impellercomestoacompletestopbefore
uncloggingthedischargechute,makingany
adjustments,orinspections.
18.Neverputyourhandinthedischargeorcollector
openings.Alwaysuseaclearingtooltounclogthe
dischargeopening.
19.Useonlyattachmentsandaccessoriesapprovedbythe
manufacturer(e.g.wheelweights,tirechains,cabsetc.).
20.Ifsituationsoccurwhicharenotcoveredinthismanual,
usecareandgoodjudgment.Contactyourdealeror
telephone1-800-800-7310forassistanceandthename
ofyournearestservicingdealer.
MaintenanceAndStorage
1. Never tamper with safety devices. Check their proper
operation regularly.
2. Disengage the control handle and stop 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 before cleaning, repairing, or
inspecting.
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 (O.E.M.) parts only. "Use of
parts which do not meet the original equipment
specifications may lead to improper performance and
compromise safetyV'
6. Check clutch 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
necessary.
8. Observe proper disposal taws 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.
YourResponsibility:
• 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.
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SECTION2: ASSEMBLINGYOURSNOWTHROWER
NOTE: This Operator's Manual covers several models.
Snow thrower features vary by model Not all
features discussed in this manual are applicable to all
snow thrower models.
ContentsofCarton
Carton contents are listed below with part numbers in
parentheses.
•Two Ignition Keys (725-0201)
• Bottle of 2 cycle oil
• Extension Cord (if so equipped)
NOTE: All references to left or right side of the snow
thrower is from the operating position only.
,_ WARNING" Disconnect the spark plug wireand ground it against the engine to prevent
unintended starting.
AssemblingtheDischargeChute
For shipping reasons, the snow thrower has been
packaged with the upper chute pivoted all the way
down. To pivot it upward, proceed as follows:
• Turn the chute until the chute opening isfacing
straight ahead.
• Remove the wing knob, flat washer and carriage
bolt from the lower chute. See Figure 2.
• Pivot the upper chute upward over the lip on the
lower chute so that there is NO gap between the
upper chute and the lower chute. See Figure 2.
• Resecure with the hardware just removed.
CAUTION:Do not use the Chute
Handle to lift the machine.
PositioningtheUpperHandle
• Remove packing material, if present, and loosen
the wing knobs found on each side of the handle.
• Making sure not to pinch or crimp the cable in the
process, pivot the upper handle into the operating
position as illustrated in Figure 1 until it clicks into
place.
• Tighten the wing knobs to secure the handle in
place.
Carriage Bolt
and Flat Washer
Wing Knob
Figure 2
Wing Knob
Figure 1
SECTION3: KNOWYOURSNOWTHROWER
Plate
Primer
Spark
Choke Lever_
Upper Handle
Auger Control
Handle Electric irter Plug
(If So Equipped)
ge Chute
Fuel Cap
Ignition Key
"lectric
Starter
Button
(If So Equipped)
Auger
Figure 3
IMPORTANT:This unit runs on a mixture of gasoline
and oil. Do NOT operate the snow thrower without first
reading the Tecumseh Engines operator's manual for
instructions regarding proper fuel and engine oil.
ChokeLever
I OFF 111CHOKE II1 ON 1
Activating the choke control closes the choke plate on
the carburetor and aids in starting the engine. Refer to
the engine manual packed with the snow thrower for
more detailed instructions regarding the choke.
Primer PRIMER"
Depressing the primer forces fuel
directly into the engine's carburetor to
aid in cold-weather starting. Refer to
the engine manual packed with the
snow thrower for more detailed PUSH FOR A
instructions regarding the primer. . COLD_NG,N_
IgnitionKey
The ignition key must be present _--_f__
and placed in the "ON" position for
the engine to start. IGNITION
StarterHandle
The starter handle is used to manually start the engine.
StoppingEngine
• Turn ignition key to OFF position and remove it
from the snow thrower.
ElectricStarter Button(If so equipped)
Pressing the electric starter button engages the
engine's electric starter when plugged into a 120V
power source
Electric Starter Plug (If so equipped)
Requires use of a two-prong outdoor extension cord
(packed with the snow thrower) and a 120V power
source/wall outlet.
Spark Plug Cover
Remove the spark plug cover to access the engine's
spark plug located beneath it.
Auger
When engaged, the augers rotation picks up snow that
enters the auger housing and throws it out the
discharge chute. The rubber paddles on the augers
also aid in propelling the snow thrower as they come in
contact with the pavement.
AugerControl Handle
Located on the upper handle, the auger control handle
is used to engage and disengage drive to the auger.
Squeeze the control handle against the upper handle to
engage the auger; release it to disengage.
DischargeChute
The pitch of the discharge chute controls the angle at
which the snow is thrown. Loosen the wing knob on the
side of the discharge chute before pivoting the
discharge chute upward or downward. Retighten the
knob once the desired position has been achieved.
ShavePlate
The shave plate scrapes along the pavement as the
snow thrower is propelled, allowing the snow close to
the pavement's surface to be discharged.
SECTION4: OPERATINGYOURSNOWTHROWER
WARNING: Before starting the engine,
read, understand, and follow all instructions
and warnings on the machine and in this
manual before operating.
FuelAndOilMixture
WARNING: Use extreme care when
handling gasoline. Gasoline is extremely
flammable and the vapors are explosive.
Never fuel machine indoors or while the
engine is hot or running. Extinguish cigarettes,
cigars, pipes and other sources of ignition.
Your snow thrower is equipped with a two-cycle
engine that requires a mixture of gasoline and two
cycle engine oil at a ratio of 50:1. Refer to the
Tecumseh Engines operator's manual for detailed
instructions regarding oil and gasoline for your snow
thrower's engine.
•A plastic cup is placed inside the fuel fill opening on
the fuel tank (beneath the fuel cap) to keep debris
out during product assembly. Remove and discard
this cup before filling up the tank.
IMPORTANT: Do NOT operate the snow thrower without
the fuel cap securely in place on the fuel tank.
StartingtheEngine
• Refer to the Tecumseh Engines manual packed
with the snow thrower for detailed instructions
regarding starting the engine.
OperatingtheSnowThrower
• Loosen the wing knob found on the left side of the
discharge chute and pivot the upper chute upward
or downward to the desired pitch. Retighten the
wing knob before operating the snow thrower.
• Position the discharge chute opening by using the
Chute Handle to throw the snow in the desired
direction. See Figure 4.
Wing
Figure 4
Control
Figure 5
NOTE: For more efficient snow clearing, discharge
snow downwind whenever possible.
,_i WARNING: Never operate the snow thrower
with bystanders in front of or near the
discharge chute opening.
Engage the auger by squeezing the control handle
against the upper handle. See Figure 5.
Lift up slightly on the handle to allow the rubber
paddles on the auger to contact the pavement and
propel the snow thrower forward.
IMPORTANT:Excessive upward pressure on the handle
will result in premature wear on the rubber auger
paddles. Resulting wear would not be covered by
warranty.
• 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.
• Release the auger control handle to stop the snow
throwing action and the forward motion.
StoppingtheEngine
,_ WARNING: Muffler, engine and surroundingareas become hot and can cause a burn. Do
not touch.
After clearing snow, allow the engine to run for an
extra few minutes before storing to help dry any
moisture on the engine.
To stop the engine: Turn the ignition key
counterclockwise to the OFF position. Refer to
Ignition Keyon page 6. Remove the key form the
snow thrower's ignition switch before storing.
IMPORTANT:Keep the ignition key in a safe place. The
engine can not be started without it.
• Wipe all the snow and any moisture which has
formed, from the unit.
• Move the choke lever back and forth several times.
SECTION5: MAKINGADJUSTMENTS
_WARNING: NEVER attempt to make any
adjustments while the engine is running, except
where specified in the operator's manual.
ControlCable& BeltTension
As a result of both the control cable and the drive belt
stretching due to wear, periodic adjustments may be
necessary.
If the auger seems to hesitate when rotating while the
engine maintains a constant speed, an adjustment is
necessary. Proceed as follows:
The upper hole in the control handle provides for an
adjustment in cable tension. To adjust, disconnect the
end of control cable from the bottom hole in the control
handle and reinsert it in the upper hole. Test the snow
thrower to see if there is a noticeable difference.
ShavePlate
To check the adjustment of the shave plate, place
the unit on a level surface. The wheels, shave plate
and augers should all contact the level surface.
Note that if the shave plate is adjusted too high,
snow may blow under the housing. If the shave
plate wears out excessively, or the unit will not self-
propel, the shave plate may be adjusted too low.
NOTE: On new units or units with a new shave plate
installed, the augers may be slightly off the ground.
• To adjust, tip the snow thrower back so that it rests
on the handle. Loosen the lock nuts from the
carriage bolts which secure the shave plate to the
housing. See Figure 6.
• Move the shave plate to desired position and
retighten the nuts and bolts. Make certain all four
nuts are securely tightened.
Carriage Bolts Shave Plate
Figure 6
SECTION6: MAINTAININGYOURSNOWTHROWER
WARNING: Before servicing, repairing, or
inspecting, disengage the control handle and
stop engine. Wait until all moving parts have
come to a complete stop. Disconnect spark
plug wire and ground it against the engine to
prevent unintended starting.
Engine
Refer to the Tecumseh Engines manual packed with
the snow thrower for detailed instructions regarding all
engine-related maintenance.
Lubrication
Lubricate pivot points on the control handle and the
extension spring at the end of the clutch cable with
a light oil once every season and before storage of
the snow thrower at the end of the season.
Hardware
Check the engine and snow thrower frequently for
loose or missing hardware, and tighten or replace as
necessary.
ReplacingtheDriveBelt
The snow thrower's drive belt is subject to wear and
should be replaced if any signs of cracking, shredding
or rotting is present. To change the drive belt, proceed
as follows:
• Remove the belt cover from the left side of the
snow thrower's auger housing by unthreading the
five hex screws which secure it in place.
• Gentlygrasptheidlerbracketandpivotitupwardto
easetensiononthedrivebelt.SeeFigure7.
Pulley
Auger Pulley Drive Belt
Figure 7
• While holding the idler bracket up, carefully slip the
drive belt off the engine pulley. See Figure 7.
• Carefully release the idler bracket and allow it to
pivot downward.
• Carefully slip the drive belt off the auger pulley,
freeing itfrom the snow thrower. See Figure 7.
• Install the replacement drive belt by following the
preceding steps in reverse order.
• Reattach the belt cover with the five hex screws
removed earlier.
ReplacingtheShavePlate
The shave plate is subject to wear and should be
checked periodically. There are two wearing edges and
the shave plate can be reversed after one side wears
out. To replace (or reverse) the shave plate, proceed as
follows:
NOTE: Call 1-800-800-7310 for information regarding
price and availability of Shave Plate Kit 753-0451 or
contact an authorized MTD Service Dealer in your area.
• Remove the four carriage bolts and hex lock nuts
which secure it to the snow thrower's auger
housing. Refer to Figure 6.
• Install the new shave plate (or reverse the existing
one, if both sides are not yet worn), making sure the
heads of the carriage bolts are on the inside of the
housing. The lock nuts should be on the outside of
the housing.
• Adjust the shave plate as instructed in the Making
Adjustmentssection on page 8 of this manual.
• Tighten the nuts securely before operating the
snow thrower.
ReplacingtheAuger'sRubberPaddles
The snow thrower auger's rubber paddles are subject
to wear and should be replaced if any signs of
excessive wear is present.
IMPORTANT:Do NOT allow the auger's rubber paddles
to wear to the point where portions of the metal auger
itself can come in contact with the pavement. Doing so
can result in serious damage to your snow thrower.
NOTE: Call 1-800-800-7310 for information regarding
the price and availability of Auger Kit 753-04472 or
contact an authorized MTD Service Dealer in your
area).
To change the rubber paddles, proceed as follows:
• Remove the existing rubber paddles by
unthreading the self-tapping screws which secure
them to the auger.
• Secure the replacement rubber paddles to the
auger using the hardware removed earlier.
SECTION7: 0FF-SEASONSTORAGE
WARNING: Never store engine with fuel in
tank indoors or in enclosed, poorly ventilated
areas where fuel fumes may reach an open
flame, spark or pilot light as on a furnace,
water heater, clothes dryer, or other gas
appliance.
• Clean snow thrower thoroughly.
• Lubricate as instructed in the Maintaining Your
Snow Thrower section on page 8 of this manual.
• Refer to the Tecumseh Engines manual packed
with the snow thrower for detailed instructions
regarding all engine-related storage instructions.
• Store the snow thrower in a clean, dry area.
• Place blocks under the front of the auger housing
so that the snow thrower is not resting on the
rubber auger paddles. The rubber can become
misshaped if it supports the weight of the snow
thrower for several months of storage.
NOTE: When storing any type of power equipment in a
poorly ventilated or metal storage shed, care should be
taken to rustproof the equipment, especially springs,
cables and all moving parts.
SECTION8: TROUBLESHOOTINGGUIDE
Problem Remedy
Engine fails to start
Engine runs erratic
Loss of power
Excessive vibration
Unit fails to self-propel
Unit fails to discharge
snow
1,
2.
Cause
Key not in ignition switch or not in ON position.
Fuel tank empty, or stale fuel
3. Blocked fuel line
4. Spark plug wire disconnected
5. Faulty spark plug
1. Unit running on choke
2. Fuel line blocked, or stale fuel
3. Water or dirt in fuel system
4. Carburetor out of adjustment
1. Spark plug wire loose
2. Vent in fuel cap plugged
3. Engine exhaust pipe plugged.
1. Loose parts or damaged auger
1. Drive belt damaged
1. Discharge chute clogged
2. Foreign object lodged in auger
3. Drive cable out of adjustment
4. Drive belt or damaged
1. Insert key and turn to ON position
2. Fill tank with clean fresh gasoline/oil
mixture as specified in the engine manual.
3. Clean fuel line
4. Connect wire to spark plug.
5. Clean spark plug, readjust gap, or replace.
1. Move choke lever to off position.
2. Clean fuel line and fill tank with fresh, clean
gasoline/oil.
3. Refer to engine manual on remedy.
4. Refer to engine manual.
1. Connect and tighten spark plug wire.
2. Clear vent.
3. Remove obstruction from exhaust pipe.
1. Stop engine immediately and disconnect
spark plug wire. Check for possible
damage. Tighten all bolts and nuts. Repair
as needed. Ifthe problem persists, take unit
to an authorized MTD service dealer.
1. Inspect the drive belt for damage and
replace if necessary as instructed on page
8 of this manual.
1. Stop engine immediately and disconnect
spark plug wire. Clean discharge chute and
the auger housing.
2. Stop engine immediately and disconnect
spark plug wire. Remove object.
3. Adjust the control cable as instructed on
page 8 of this manual.
4. Inspect the drive belt for damage and
replace if necessary as instructed on page
8 of this manual.
10