MTD 84666 User Manual
Safety • Set-Up • Adjustments • Operation • Maintenance • Troubleshooting • Warranty • Parts Lists
OPERATOR’S MANUAL
21” Rotary Mower — Model Series 400
IMPORTANT:
READ SAFETY RULES AND INSTRUCTIONS
CAREFULLY BEFORE OPERATING EQUIPMENT.
PRINTED IN U.S.A.
MTD Products Ltd., P. O. Box 1386, KITCHENER, ONTARIO N2G 4J1
Model 430 shown.
769-03096
01.30.07
This Operator’s Manual is an important part of your new equipment. It will help you assemble,
-4$02/$5#43,)-)4%$
+)4#(%.%2/..'*
8888888888
88888888888
-ODEL.UMBER
.UM£RODEMODÞLE
3ERIAL.UMBER
.UM£RODES£RIE
WWWMTDCANADACOM
prepare and maintain the unit for best performance. Please read and understand what it says.
Table of Contents
Slope Gauge........................................................ 3
Safe Operation Practices ................................... 4
Set-Up & Adjustments ........................................ 6
Operation ............................................................. 8
Finding and Recording Model Number
BEFORE YOU START ASSEMBLING
YOUR NEW EQUIPMENT,
please locate the model plate on the equipment and copy the
the model number and the serial number to the sample model
plate provided to the right. You can locate the model plate by
standing at the operating position and looking down at the rear
of the machine.
Maintenance & Off-Season Storage ................ 10
Trouble Shooting ..............................................12
Warranty ............................................................ 13
Illustrated Parts Lists ....................................... 14
Customer Support
Please do
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 www.mtdcanada.ca for many useful suggestions, click on Customer Support button.
2. Call a Customer Support Representative at 1-800-668-1238.
3. 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.
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.
NOT
return the unit to the retailer from which it was purchased,
without first contacting Customer Support.
2
3IGHTANDHOLDTHISLEVELWITHAVERTICALTREE
ORACORNEROFABUILDING
ORAFENCEPOST
&OLDALONGDOTTEDLINEREPRESENTSASLOPE
Use this page as a guide to determine slopes where you may not operate safely. Do not operate
your lawn mower on such slopes.
1
Slope
Gauge
WARNING
Do not mow on inclines
with a slope in excess
of 15 degrees (a rise
of approximately
2-1/2 feet every 10
feet). A riding mower
could overturn and
cause serious injury.
If operating a walkbehind mower on such
a slope, it is extremely
difficult to maintain your
footing and you could
slip, resulting in serious
injury.
Operate RIDING
mowers up and down
slopes, never across
the face of slopes.
Operate
WALK-BEHIND
mowers across the
3
face of slopes, never
up and down slopes.
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
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!
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.
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.
General Operation
1. Read this operator’s manual carefully in its entirety before
attempting to assemble this machine. Read, understand,
and follow all instructions on the machine and in the
manual(s) before operation. Be completely familiar with
the controls and the proper use of this machine before
operating it. Keep this manual in a safe place for future
and regular reference and for ordering replacement parts.
2. This machine is a precision piece of power equipment,
not a plaything. Therefore, exercise extreme caution at all
times. Your unit has been designed to perform one job: to
mow grass. Do not use it for any other purpose.
3. Never allow children under 14 years old to operate this
machine. Children 14 years old and over should read and
understand the instructions in this manual and should
be trained and supervised by a parent. Only responsible
individuals who are familiar with these rules of safe
operation should be allowed to use this machine.
4. Thoroughly inspect the area where the equipment is to
be used. Remove all stones, sticks, wire, bones, toys and
other foreign objects which could be tripped over or picked
up and thrown by the blade. Thrown objects can cause
serious personal injury. Plan your mowing pattern to avoid
discharge of material toward roads, sidewalks, bystanders
and the like. Also, avoid discharging material against a
wall or obstruction which may cause discharged material
to ricochet back toward the operator.
5. To help avoid blade contact or a thrown object injury,
stay in the operator zone behind the handles and keep
children, bystanders, helpers and pets at least 75 feet
from the mower while it is in operation. Stop machine if
anyone enters the area.
6. Always wear safety glasses or safety goggles during
operation and while performing an adjustment or repair
to protect your eyes. Thrown objects which ricochet can
cause serious injury to the eyes.
7. Wear sturdy, rough-soled work shoes and close-fitting
slacks and shirts. Shirts and pants that cover the arms
and legs and steel-toed shoes are recommended. Never
operate this machine in bare feet, sandals, slippery or light
weight (e.g. canvas) shoes.
8. Do not put hands or feet near rotating parts or under the
cutting deck. Contact with the blade can amputate hands
and feet.
9. A missing or damaged discharge cover can cause blade
contact or thrown object injuries.
10. Many injuries occur as a result of the mower being pulled
over the foot during a fall caused by slipping or tripping.
Do not hold on to the mower if you are falling; release the
handle immediately.
11. Never pull the mower back toward you while you are
walking. If you must back the mower away from a wall or
obstruction first look down and behind to avoid tripping
and then follow these steps:
a. Step back from the mower to fully extend your arms.
b. Be sure you are well balanced with sure footing.
c. Pull the mower back slowly, no more than half way
toward you.
d. Repeat these steps as needed.
12. Do not operate the mower while under the influence of
alcohol or drugs.
13. Do not engage the self-propelled mechanism on units so
equipped while starting engine.
14. The blade control handle is a safety device. Never attempt
to bypass its operation. Doing so makes the safety device
inoperative and may result in personal injury through
contact with the rotating blade. The blade control handle
must operate easily in both directions and automatically
return to the disengaged position when released.
15. Never operate the mower in wet grass. Always be sure of
your footing. A slip and fall can cause serious personal
injury. If you feel you are losing your footing, release the
blade control handle immediately and the blade will stop
rotating within three seconds.
16. Mow only in daylight or in good artificial light. Walk, never
run. Stop the blade when crossing gravel drives, walks or
roads.
17. If the equipment should start to vibrate abnormally, stop the
engine and check immediately for the cause. Vibration is
generally a warning of trouble.
18. Shut the engine off and wait until the blade comes to
a complete stop before removing the grass catcher or
unclogging the chute. The cutting blade continues to rotate
for a few seconds after the engine is shut off. Never place
any part of the body in the blade area until you are sure the
blade has stopped rotating.
19. Never operate mower without proper trail shield, discharge
cover, grass catcher, blade control handle or other safety
protective devices in place and working. Never operate
mower with damaged safety devices. Failure to do so, can
result in personal injury.
20. Muffler and engine become hot and can cause a burn. Do
not touch.
21. Only use parts and accessories made for this machine by
the manufacturer. Failure to do so can result in personal
injury.
22. If situations occur which are not covered in this manual, use
care and good judgment. Call customer assistance for the
name of your nearest servicing dealer.
Slope Operation
Slopes are a major factor related to slip and fall accidents which
can result in severe injury. Operation on slopes requires extra
caution. If you feel uneasy on a slope, do not mow it. For your
safety, use the slope gauge included as part of this manual to
measure slopes before operating this unit on a sloped or hilly
area. If the slope is greater than 15 degrees, do not mow it.
4
Do:
1. Mow across the face of slopes; never up and down.
Exercise extreme caution when changing direction on
slopes.
2. Watch for holes, ruts, rocks, hidden objects, or bumps which
can cause you to slip or trip. Tall grass can hide obstacles.
3. Always be sure of your footing. A slip and fall can cause
serious personal injury. If you feel you are losing your
balance, release the blade control handle immediately, and
the blade will stop rotating within 3 seconds.
Do Not:
1. Do not mow near drop-offs, ditches or embankments, you
could lose your footing or balance.
2. Do not mow slopes greater than 15 degrees as shown on
the slope gauge.
3. Do not mow on wet grass. Unstable footing could cause
slipping.
Children
Tragic accidents can occur if the operator is not alert to the
presence of children. Children are often attracted to the mower
and the mowing activity. They do not understand the dangers.
Never assume that children will remain where you last saw
them.
1. Keep children out of the mowing area and under the watchful care of a responsible adult other than the operator.
2. Be alert and turn mower off if a child enters the area.
3. Before and while moving backwards, look behind and down
for small children.
4. Use extreme care when approaching blind corners,
doorways, shrubs, trees, or other objects that may obscure
your vision of a child who may run into the mower.
5. Keep children away from hot or running engines. They can
suffer burns from a hot muffler.
6. Never allow children under 14 years old to operate a power
mower. 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.
Service
Safe Handling Of Gasoline:
1. 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.
2. Wash your skin and change clothes immediately.
3. Use only an approved gasoline container.
4. 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.
5. 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.
6. 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.
7. Extinguish all cigarettes, cigars, pipes and other sources of
ignition.
8. Never fuel machine indoors because flammable vapors
will accumulate in the area.
9. Never remove gas cap or add fuel while the engine is
hot or running. Allow engine to cool at least two minutes
before refueling.
10. Never over fill fuel tank. Fill tank to no more than ½ inch
below bottom of filler neck to provide for fuel expansion.
11. Replace gasoline cap and tighten securely.
12. If gasoline is spilled, wipe it off the engine and equipment.
Move unit to another area. Wait 5 minutes before starting
the engine.
13. Never store the machine or fuel container near an open
flame, spark or pilot light as on a water heater, space
heater, furnace, clothes dryer or other gas appliances.
14. To reduce fire hazard, keep mower free of grass, leaves,
or other debris build-up. Clean up oil or fuel spillage and
remove any fuel soaked debris.
15. Allow a mower to cool at least 5 minutes before storing.
General Service:
1. Never run an engine indoors or in a poorly ventilated area.
Engine exhaust contains carbon monoxide, an odorless
and deadly gas.
2. Before cleaning, repairing, or inspecting, make certain the
blade and all moving parts have stopped. Disconnect the
spark plug wire and ground against the engine to prevent
unintended starting.
3. Check the blade and engine mounting bolts at frequent
intervals for proper tightness. Also, visually inspect blade
for damage (e.g., bent, cracked, worn) Replace blade with
the original equipment manufacture’s (O.E.M.) blade only,
listed in this manual. “Use of parts which do not meet the
original equipment specifications may lead to improper
performance and compromise safety!”
4. Mower blades are sharp and can cut. Wrap the blade or
wear gloves, and use extra caution when servicing them.
5. Keep all nuts, bolts, and screws tight to be sure the
equipment is in safe working condition.
6. Never tamper with safety devices. Check their proper
operation regularly.
7. After striking a foreign object, stop the engine, disconnect the spark plug wire and ground against the engine.
Thoroughly inspect the mower for any damage. Repair the
damage before starting and operating the mower.
8. Never attempt to make a wheel or cutting height adjustment while the engine is running.
9. Grass catcher components, discharge cover, and trail
shield are subject to wear and damage which could
expose moving parts or allow objects to be thrown. For
safety protection, frequently check components and replace immediately with original equipment manufacturer’s
(O.E.M.) parts only, listed in this manual. “Use of parts
which do not meet the original equipment specifications
may lead to improper performance and compromise
safety!”
10. Do not change the engine governor setting or overspeed
the engine. The governor controls the maximum safe
operating speed of the engine.
11. Maintain or replace safety labels, as necessary.
12. Observe proper disposal laws and regulations. Improper
disposal of fluids and materials can harm the environment.
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
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!
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.
5
3
!
"
A
C
D
B
Setup and
Adjustments
WARNING
Disconnect and
ground the spark
plug wire as instructed in the separate
engine manual.
Figure 1
NOTE: The units illustrated may vary slightly from your
unit.
1. Remove any packing material which may be between
upper and lower handles.
a. Pull up and back on the upper handle to raise the
handle from position A into the operating position.
See Figure 1.
b. Tighten hand knobs securing upper handle to
lower handle. Make sure that each carriage bolt is
seated properly in the handle.
2. Place one carriage bolt (found in the hardware pack
included with your unit) in the upper hole of the right
handle mounting bracket from the inside outward. See
Figure 2. Secure with one wing nut. Repeat process
on the left side.
3. Rope guide Setup as follows, see Figure 3:
a. Hold the blade control against the upper handle.
Position A.
b. Slowly pull starter rope out of engine. Position B.
c. Slip starter rope into the rope guide. Position C.
d. Tighten rope guide wing nut (star knobs).Position D.
4. Insert post on cable tie into hole provided on the lower
handle. Pull cable tie tight and trim excess. See Figure
4.
IMPORTANT
This unit is shipped
WITHOUT GASOLINE
or OIL. After assembly, service engine
with gasoline and
oil as instructed in
the separate engine
manual packed with
your unit.
5. Each wheel has a height adjustment lever to change
the cutting height of the mower. To change the height
of cut, squeeze adjuster lever toward the wheel,
moving up or down to selected height. See Figure 5.
Figure 2
Figure 3
Figure 4
6
6. To assemble the grasscatcher:
#
"
!
"
!
!
"
a. Place bag over frame (black plastic side is the
bottom of bag.) Insert the hooks on the frame
through the holes in the side plastic channels of
the bag. See Figure 6.
b. Secure bag to frame by working the plastic
channels on bag over frame as shown in Figure 6.
All of the plastic channels except center top of bag
attach from the outside of bag. Center top of bag
attaches from the inside of bag.
7. Attaching Grass Catcher to Mower
a. Lift the rear discharge door on the mower, and
place the grass catcher on the pivot rod. Let go
of discharge door so that it rests on the grass
catcher. See Figure 7.
WARNING: Never operate mower
unless the hooks on the grass
catcher are firmly seated on the
pivot rod, and the rear discharge
door rests firmly against top of
the grass catcher.
8. To remove grass catcher and utilize the mulching
feature:
a. Lift rear discharge door on the mower as shown in
Figure 7. Lift grass catcher up and out, off of the
pivot rod. Release rear discharge door to allow it to
close rear opening of mower.
9. The side discharge is an optional feature.
If converting to side discharge, make sure grass
catcher is off unit and rear discharge door is closed.
a. On the side of the mower deck, lift the hinged
mulching plug. See Figure 8.
b. Slide the two hooks on the side discharge deflec-
tor under the hinge pin on the hinged mulching
plug assembly. Lower the hinged mulching plug.
NOTE: Do not remove the hinged mulching plug at any
time, even when you are not mulching.
Figure 5
Figure 6
3
Setup and
Adjustments
NOTE: Make certain
bag is turned right side
out before assembling
(warning label will be on
the outside).
NOTE: Make certain
cables are routed to the
outside of the handle so
they are not in the way
when attaching the grass
catcher.
WARNING
Never operate mower
unless the hooks on
the grass catcher are
firmly seated on the
pivot rod, and the
rear discharge door
rests firmly against
top of the grass
catcher.
Figure 8 - Optional Feature
All mowers are
equipped with a rear
protective guard. The
guard helps eliminate
projectiles thrown
by the blade from
injuring the operator.
Figure 7
DO NOT REMOVE
THIS GUARD.
7
4
Blade Control
Recoil
Starter
Grass
Catcher
Spark Plug
Mulch Plug
(optional)
Cutting Height
Adjustment Lever
(for each wheel)
Operating
Your Lawn
Mower
WARNING
Read, understand, and
follow all instructions
and warnings on the
machine and in this
manual before operating.
Know Your Lawn Mower
This blade control
mechanism is a safety
device. Never attempt
to bypass its operations.
Use extreme care when
handling gasoline.
Gasoline is extremely
flammable and the
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.
Blade Control Handle
The blade control handle is located on the upper handle
of the mower. See Figure 8. The blade control handle
must be depressed in order to operate the unit. Release
the blade control handle to stop the engine and blade.
Recoil Starter
The recoil starter is attached to the right upper handle.
Stand behind the unit and pull the recoil starter rope to
start the unit.
Mulching Plug (optional)
The mulching plug is used to close the side discharge
chute opening when mulching or bagging grass. Do
not remove the hinged mulching plug at any time, even
when you are not mulching.
Cutting Height Adjustment Levers
One adjustment lever is located on each wheel and is
used to adjust the cutting height. All four levers have to
be at the same relative position to ensure uniform cut.
Figure 8
Before Starting
1. Service the engine with gasoline and oil as instructed
in the separate engine manual.
2. Attach spark plug wire to spark plug. If unit is
equipped with a rubber boot over the end of the spark
plug wire, make certain the metal loop on the end of
the spark plug wire (inside the rubber boot) is fastened
securely over the metal tip on the spark plug.
Starting Engine
Briggs & Stratton/Tecumseh Engine:
1. If your unit is equipped with a primer, prime engine as
instructed in the separate engine manual packed with
your unit.
2. Standing behind the unit, depress the blade control
handle and hold it against the upper handle as shown
in Figure 9.
3. Grasp the starter handle as shown and pull slowly
until resistance is felt, then pull rapidly to start engine
and avoid kickback. Return it slowly to the rope guide.
8
�
Honda Engine
/.
/&&
Refer to the separate engine manual packed with
your unit.
1. Place the fuel valve lever found on the left side of the
engine into the ON (OPEN) position, Figure 9-2.
2. Move the choke lever all the way backward into the
choke position.
3. Standing behind the mower, squeeze the blade control
against upper handle, Figure 9-2. The choke will now
begin to slowly return to the off choke position after
activating the blade control. Therefore, quickly move
onto step four below.
4. Grasp the starter handle as shown and pull slowly
until resistance is felt, then pull rapidly to start engine
and avoid kickback. Return it slowly to the rope guide.
WARNING: Wait for the blade to stop
completely before performing any
work on the mower or to remove the
grass catcher.
To Stop Engine
1. Release the blade control handle to stop the engine
and blade.
WARNING: The blade continues to
rotate for a few seconds after the
engine is shut off.
2. Disconnect and ground the spark plug wire as
instructed in the separate engine manual to prevent
accidental starting while equipment is unattended.
Using Your Lawn Mower
WARNING: Never operate your
mower without either the rear door
or the entire grass catcher assembly
firmly secured.
Be sure the lawn is clear of stones, sticks, wire, or other
objects which could damage the lawn mower or the
engine. Such objects could be accidently thrown by the
mower in any direction and cause serious personal injury
to the operator and others.
WARNING: If you strike a foreign
object, stop the engine. Remove
wire from the spark plug, thoroughly
inspect the mower for any damage,
and repair the damage before
restarting and operating the mower.
Extensive vibration of the mower
during operation is an indication
of damage. The unit should be
promptly inspected and repaired.
Operating Tips
1. For best results and effective mulching, do not cut wet
grass.
Figure 9-1
Figure 9-2
2. New grass, thick grass, or wet grass may require a
narrower cut.
3. For a healthier lawn, never cut off more than onethird of the total length of the grass.
4. Your lawn should be cut in the fall as long as there
is growth.
5. Adjust ground speed according to condition of lawn.
6. If the grass has been allowed to grow in excess of 4
inches, mulching is not recommended. Mow using
the grass catcher to reduce the grass height to 3-1/4
inches or less before mulching.
WARNING: Wait for the blade to
stop completely before doing any
work on the mower or to remove
the grass catcher.
NOTE: To operate your unit using the grass catcher,
mulcher or optional side discharge refer to page 7.
9
4
Operating
Your Lawn
Mower
WARNING
The operation of any
lawn mower can result
in foreign objects being
thrown into the eyes,
which can damage your
eyes severely. Always
wear safety glasses
while operating the
mower, or while performing any adjustments or
repairs on it.
Be sure no one other
than the operator is
standing near the lawn
mower while starting
engine or operating
mower. Never run engine
indoors or in enclosed,
poorly ventilated areas.
Engine exhaust contains
carbon monoxide, an
odorless and deadly
gas. Keep hands, feet,
hair and loose clothing
away from any moving
parts on engine and lawn
mower.
Loading...