MTD 6A4E, 664F, 662E, 644E, 642F Owner’s Manual
...
OPERATOR'S MANUAL
SNOW
THROWER
Models 642E, 642F,
662E, 614E, 644E,
664F, & 6A4E
Model 642 Shown
IMPORTANT: READ SAFETY RULES AND INSTRUCTIONS CAREFULLY
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 368022 Cleveland, Ohio 44136-9722.
MTD PRODUCTS INC. P.O. BOX 368022 CLEVELAND, OHIO 44136-9722
PRINTED IN U.S.A.
FORM NO. 770-10045E
(6/2001)
TABLEOFCONTENTS
Content Page
Important Safe Operation Practices ................................................................... 3
Hardware Pack ................................................................................................... 5
Assembling Your Snow Thrower ........................................................................ 6
Know Your Snow Thrower .................................................................................. 11
Operating Your Snow Thrower ........................................................................... 12
Making Adjustments ........................................................................................... 13
Maintaining Your Snow Thrower ........................................................................ 16
Service ............................................................................................................... 16
Troubleshooting ................................................................................................. 19
Parts List ............................................................................................................ 20
FINDINGMODELNUMBER
This Operator's Manual is an important part of your new snow thrower. Itwill help you assemble, prepare and
maintain the unit for best performance. Please read and understand what it says.
Before you start assembling your new equipment, 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 rear frame below the engine. 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.
(Model Number) (Serial Number)
MTD PRODUCTS INC
CLEVELAND, OHIO 44136
Copy the model number here:
Copy the serial number here:
ENGINEINFORMATION
The engine manufacturer isresponsible 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
If you have difficulty assembling this product or have any questions regarding the controls, operation or
maintenance of this unit, please call Customer Support Department or visit our website at
www.mtdproducts.com.
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.
2
SECTION1: IMPORTANTSAFEOPERATIONPRACTICES
WARNING: This symbol points out important safety instructionswhich, 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.
5.
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 a safe 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 a grounded three wire extension cord and receptacle
for all units with electric start engines.
Adjust collector housing height to clear gravel or crushed
rock surfaces.
6.
Disengage all clutch levers 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. Never fuel 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 fill 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. 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.
Operation
1. Do not put hands or feet near rotating parts, inthe auger/
impeller housing or discharge chute. Contact with the
rotating parts can amputate hands and feet.
2. The auger/impeller clutch lever is a safety device. Never
bypass its operation. Doing so, makes the machine
unsafe and may cause personal injury.
3. Theclutchleversmustoperateeasilyinbothdirections
andautomaticallyreturntothedisengagedpositionwhen
released.
4. Neveroperatewithamissingordamageddischarge
chute.Keepallsafetydevicesinplaceandworking.
5. Neverrunanengineindoorsorinapoorlyventilated
area.Engineexhaustcontainscarbonmonoxide,an
odorlessanddeadlygas.
6. Donotoperatemachinewhileundertheinfluenceof
alcoholordrugs.
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.Disengageallclutchleversandstopenginebeforeyou
leavetheoperatingposition(behindthehandles).Wait
untiltheaugedimpellercomestoacompletestopbefore
uncloggingthedischargechute,makingany
adjustments,orinspections.
18.Neverputyourhandinthedischargeorcollector
openings.Alwaysuseaclearingtooltounclogthe
dischargeopening.
19.Useonlyattachmentsand accessories approved by the
manufacturer (e.g. wheel weights, tire chains, cabs etc.).
20. Ifsituations occur which are not covered in this manual,
use care and good judgment. Contact your dealer or
telephone 1-800-800-7310 for assistance and the name
of your nearest servicing dealer.
MaintenanceAndStorage
1. Never tamper with safety devices. Check their proper
operation regularly.
2. Disengage all clutch levers 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 safetyr'
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 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.
WARNING: 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.
SECTION2: CONTENTSOFHARDWAREPACK
Lay out the hardware according to the illustration below for identification purposes. Part numbers are shown in
}arentheses. (Hardware pack may contain extra items which are not used on your unit.)
A_ ATTACHING THE HANDLES Lock Washers
736-0!19(4)
Hex Bolts _
710-3259 (2) /'('_'_ (F _
III!IIItH]IIII]I!!_
ATTACHING CHUTE DIRECTIONAL CONTROL
Cupped Washer Eyebolt (Not Shown)
736-0242 747.0697
Hex Nuts
(_I _!2"30!0!2)
Flat Washers
736-0! 85 (2)
_ ATTACHINGHANDLE PANEL
Carriage Bolts
O_ ATTACHING CLUTCH CABLES AND SHIFT ROD
Z Fitting Hex Nuts
746-0778 (2) 712-0121 (2)
@ ©©
711-0677 Hairpin Clips Flat Washers
714-0104 (2) 7736.0275 (2)
E_ ATTACHING THE CLUTCH GRIPS
Hex Screws f'-_-"_ _
__ 7!4"0!04
ATTACHING CHUTE ASSEMBLY
Hex Bolts Hex Lock Nuts
716.3015 (2) 712-3027 (6)
i Ii IF
7!0,3103(2! ( _ 'ff ('-',,'_
idlH!lll! l! ll0"J
,--- 750.1032(2)
: : HexTop L-Nut
-!
G REPLACEMENT SHEAR BOLTS
=-=
Chute Flange Keepers
731-0851 (3) Not Shown
NOTE: The augers are secured to the spiral shaft with two shear bolts and hex lock nuts. If you hit a hard foreign
object or an ice jam, the snow thrower is desi ned so that the bolts may shear. Two replacement shear bolts and
nuts are provided for your convenience. Store in a safe place until needed
Hex Lock Nuts _7] F1
7!2-0429(2) _ Hex Bolts
71o-06goA,2)
SECTION3: ASSEMBLINGYOURSNOWTHROWER
NOTE: This operator's manual covers various models
of snow throwers. The units illustrated may vary slightly
from your unit. Follow only those instructions which
pertain to your model snow thrower.
NOTE: References to right or left side of the snow
thrower are determined from behind the unit in the
operating position.
Unpacking
Remove staples or break glue on top flaps of the
carton. Remove any loose parts included with unit
(i.e., operator's manual, etc.).
Cut corners of the carton and lay ends down flat.
Remove packing material.
Rotl unit out of carton. Check carton thoroughly for
loose parts before discarding.
Extend cables out behind unit and lay them on the
floor.
Lay out the contents of the hardware pack
according to the illustration in section 2 and identify
each part.
Find the loose parts in the carton and lay these on
the floor. See Figure 1. You should locate the
following loose parts in the carton:
1. Handle panel
2. Right Handle
3. Left Handle
4. Auger Control
5. Traction Control
6. Right Clutch Bracket
7. Left Clutch Bracket
8. Shift Rod (Not Illustrated)
9. Chute Directional Control Assembly (Not
Illustrated)
10. Chute Assembly (Not Illustrated)
11. Hardware Pack (Not Illustrated)
BeforeAssembly
_lb WARNING: Disconnect the spark plugwire and ground it against the engine to
prevent unintended starting.
AttachingtheHandleAssembly(Hardware
GroupA,B andE)
Attach left handle and left clutch bracket to handle
panel with two carriage bolts, lock washers and hex
patch nuts. (Be sure the bend in the grip bracket is
towards the center of the handle panel.) Do not
tighten at this time. See Figure 2.
Handle Panel
Bolts _ _l,l_He x "_
Left Handle _ \ _ f
Cu es \
Figure 2
Insert curved end of the Z fitting into the top hote in
the triangular metal tab on the auger control grip.
The triangular metal tab on the auger control grip
must face the center of the handle panel.
See Figure 3.
__ (,._. o_/,, Triangle
/ _ MetalTab
Auger Contro|
Figure 1
Figure 3
Place the auger control on top of the left handle.
The triangular metal tab must be between the
handle and the bracket. See Figure 4.
Triangle
Metal Tab
Hex Bolt__
Lock Washer
Left
Left Bracket
He)( Lock Nut
"Z" Fitting
Figure 4
Secure with hex bolt, spacer, and hex lock nut. Do
not overtighten this bolt as itwill prevent the control
from automatically returning to their upright
position.
Repeat process for the right side Traction Control.
Lay handle assembly behind snow thrower.
See Figure 5.
Insert a hex bolt 3/4" long and lock washer through
the lower hole on the bottom of the handle.
Hold the handle assembly up to the bottom of the
snow thrower frame and thread the hex bolt into the
lower hole in snow thrower frame. Do not tighten at
this time. See Figure 5.
Repeat process on the other side.
Figure 5
Raise the handle assembly into the upright position
and align the top holes in the handle with the top
holes in the snow thrower frame. Attach using 2"
long hex bolts, lock washers and saddles. (Curve in
saddle must match the curve in the handle.)
See Figure 6.
Tighten all hardware used to attach the handle
assembly to the snow thrower frame.
Saddle.
Cable
Guide
Washers Hex
Bolt
Figure 6
AttachingShiftRod(HardwareD)
Place the shift lever in the fastest forward speed
position.
Models 602, 642, and 662: Rotate the shift arm
assembly counter clockwise, as far as it will go.
Insert the shift rod through the shift arm assembly.
When installed the shift arm assembly should point
to the right. Secure with flat washer and hairpin clip.
See Figure 7.
Models 614, 644, 664 and 6A4: Rotate the shift
arm assembly counter clockwise as far as itwillgo.
Insert the shift rod through the shift arm assembly.
When installed, the shift arm assembly should point
left. Secure with flat washer and hairpin clip. See
Figure 8. (Viewed from the operating position.)
_ Shift Hairpin /TrriaCti_ut ch
Models 602, 642, and 662: Thread the ferrule up
or down the shift rod and align with the lower hole
on the shift lever assembly behind the handle
panel. See Figure 7.
Models 614, 644, 664, and 6A4: Thread the ferrule
onto the shift rod, up or down the shift rod and align
with the far hole on the narrow side of the shift lever
assembly behind the handle panel. See Figure 8.
Secure the ferrule to the shift arm assembly with
the flat washer and hairpin clip.
NOTE: Make certain to check for correct adjustment
of the shift rod as instructed in the FINAL
ADJUSTMENTS section before operating the snow
thrower.
Auger" \_='_ _ _ J €
Ferrule
(B°tt°m Hole)"_1 _ :Washer
Drive Clutch _ 1
Models 602, 642 and 662
!_r_!!_ _'_FI....-_\_wather Shii Lever _ _ _Tiri_tCtceh°n
.oR\
_Wl" t' Hairpin
SAhjsftemArb_Y_ Ldj_ /clip
Figure 7
AttachingClutchCables(HardwareD)
Thread the hex jam nuts all the way up the
threaded portion of the "Z" ends.
Make certain all cables are in the grooves of the
cable roller guides. The roller guides are located in
the lower rear of the unit. Lift the clutch grip in the
raised (up) position.
Thread the cable onto the threaded portion of the
"Z" end until there is no slack in the cable, but the
cable is NOT tight. Do not overtighten cable.
See Figure 9.
When correct adjustment isreached, tighten the
hex nut against the cable to lock it in position.
WARNING: If cable is tightened so there
is tension on the cable with the clutch grip
released, the safety features of the snow
thrower may be overridden.
Models 614, 644, 664 and 6A4 _
Figure 8
Cable Should
Be Straight-- ---=
Figure 9
AttachingtheChuteAssembly(HardwareF)
Place chute assembly over chute opening, with the
opening in the chute assembly facing the front of
the unit.
Place chute flange keepers beneath lip of chute
assembly with flat side down. See Figure 10.
Insert hex bolt up through chute flange keeper and
chute assembly. Secure with hex lock nut.
Afterassemblingallthreechuteflangekeepers,
tightenallnutsandboltssecurelythenbackoff1/4
turntoalloweasiermovement.
Keeper
Figure 10
AttachingTheChuteDirectionalControl
(HardwareC)
Thread one hex nut about halfway onto eye bolt on
the chute directional control.
Insert eye bolt through the hole provided in the left
handle. See Figure 11.
Secure with cupped washer (cupped side against
the handle) and other hex nut. Do not tighten until
after attaching the other end of the chute directional
control.
Adjustthechutebracketsothatthespiralonthe
chutedirectionalcontrolfullyengagestheteethon
thechuteassembly.
Carriage
Bolts
Hex Lock
Nuts
Bracket
Chute
Hairpin
Clip\/
Directional
Cupped
Figure 11
To align the spiral on the chute directional control,
you may have to loosen the carriage bolts and hex
lock nuts securing lower chute bracket to the
extension on the left side of the chute assembly.
See Figure 12.
Place one flat washer on the end of the chute
directional control, then insert the end of the control
into the hole in the plastic bushing in the lower
chute bracket.
Place another flat washer on the end of the chute
directional control, and inserthairpin clip into hole in
the end of control. See Figure 12.
Lower Chute
Bracket
Washers
Figure 12
Tighten nuts on the lower chute bracket securely.
Tighten hex nut on the eye bolt on chute directional
control.
LampWiring(ifEquipped)
If for shipping purposes, the headlight wire was left
unattached to the alternator lead, follow the steps
below to attach itnow:
Unwrap the headlight wire which is attached to the
headlight beneath the handle panel. Wind the
headlight wire around the right handle until excess
slack is removed. See Figure 13.
Plug the wire from the headlight into the alternator
lead coming from the right side of the engine,
underneath the fuel tank.
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