Toro 53cm Lawnmower Walk Behind Mower Operator's Manual

FORM NO. 3319-327GB
53cm
Walk-behind Power Mower
Model No. 20708 — 7900001 & Up
Model No. 20710 — 7900001 & Up
Operator’s Manual
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©The Toro Company - 1997
All Rights Reserved Printed in USA
Figures
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1754
1. Guard plate 2. Bolt and nut
1. Cover plate 2. Screw
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1. Fuel tank cap
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1. Shoulder boli
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1. Blade control bail
2. Upper handle
3. Starter handle
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Figures
1. Filter 2. Cover
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Figures
« 5”
(127 mm)
1. Blade nut 3. Blade driver
2. Blade
Figures
5
1. 1to 11/2 in. (25 to 38 mm) 4. Cable support
2. Self -propel control 5. Nut
3. Cable jacket 6. Blade brake control
Figures
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1. Muffler cover 2. Baffle plate
982
1. Blade control bail
3. Starter handle
2. Upper handle
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2
8
1. Exhaust ports
1073
1. Chute baffle 3. Toe guard
2. Deck baffle
vii
1. Chute baffle
2. Front deck baffle
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Contents
Page
Introduction ............................ 1
Safety ......... LL a aan 2
Training 2.кк.к кк ве вне ке квн, 2
Preparation ......................... 2
Operation .......................... 2
Maintenance And Storage ............. 3
Sound Pressure Level ................. 4
Sound Power Level .................. 4
Vibration Level ..................... 4
Symbol Glossary .................... 4
Assembly .......... 0 eniadace. 7
Handle ............................ 7
Cover Plate and Guard Plate ....... ce 7
Before Starting . ......................... 8
OillMixRatio ....................... 8
Mixing Gasoline And Oil .............. 8
Lawn Preparation And Mowing ......... 9
Operation ...................c....cuu... 9
Starting Engine . ..................... 9
Stopping Engine ..................... 9
Self—propelled Drive ................. 10
Adjusting Cutting Height .............. 10
Maintenance . ........................... 11
Recommended Maintenance Schedule ... 11
Air Filter ........ nena aa 12
Drain Gasoline ...................... 12
Spark Plug ......................... 12
Clean Mower Housing ................ 13
Blade ............................. 13
Lubrication ......................... 14
Self-propelled Cable ................. 14
Self-propelled Drive Cleaning .......... 15
ExhaustPorts ....................... 15
Troubleshooting ......................... 16
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Engine ............................ 19
FoldmgHandle ...................... 19
Removing From Storage .............. 19
Introduction
Thank you for purchasing a Toro product.
All of us at Toro want you to be completely satisfied
with your new product, so feel free to contact your
local Authorized Service Dealer for help with service,
genuine Toro parts, or other information you may
require,
Whenever you contact your Authorized Service
Dealer or the factory, always know the model and
serial numbers of your product. These numbers will
help the Service Dealer or Service Representative
provide exact information about your specific
product. You will find the model and serial number
decal located in a unique place on the product
(Fig. 1).
For your convenience, write the product model and
serial numbers in the space below.
Model No.
Serial No.
Read this manual carefully to learn how to operate
and maintain your product correctly. Reading this
manual will help you and others avoid personal injury
and damage to the product. Although Toro designs,
produces and markets safe, state-of-the-art products,
you are responsible for using the product properly
and safely. You are also responsible for training
persons who you allow to use the product about safe
operation.
The Toro warning system in this manual identifies
potential hazards and has special safety messages that
help you and others avoid personal injury, even death.
DANGER, WARNING and CAUTION are signal
words used to identify the level of hazard. However,
regardless of the hazard, be extremely careful.
DANGER signals an extreme hazard that will cause
serious injury or death if the recommended
precautions are not followed.
WARNING signals a hazard that may cause serious
injury or death 1f the recommended precautions are
not followed.
CAUTION signals a hazard that may cause minor or
moderate injury if the recommended precautions are
not followed.
Two other words are also used to highlight
information. “Important” calls attention to special
mechanical information and “Note” emphasizes
general information worthy of special attention.
Safety
Training
1. Read the instructions carefully. Be familiar with
the controls and the proper use of the equipment.
2. Never allow children or people unfamiliar with
these instructions to use the lawnmower. Local
regulations may restrict the age of the operator.
3. Always wear safety glasses or eye shields during
operation to protect eyes from foreign objects
that may be thrown from the machine. Wearing
of hearing protection, protective gloves and a
safety helmet is advisable and may be required
by local regulations.
4. Never mow while people, especially children, or
pets are nearby.
5. Keep in mind that the operator or user 1s
responsible for accidents or hazards occurring to
other people or their property.
Preparation
1. While mowing, always wear substantial
footwear and long trousers. Do not operate the
equipment when barefoot or wearing open
sandals.
2. Thoroughly inspect the area where the
equipment is to be used and remove all objects
which may be thrown by the machine.
3. WARNING - Petrol is highly flammable.
e Store fuel in containers specifically designed for
this purpose.
e Refuel outdoors only and do not smoke while
refuelling.
e Add fuel before starting the engine. Never
remove the cap of the fuel tank or add petrol
while the engine 1s running or when the engine 1s
hot.
e If petrol is spilled, do not attempt to start the
engine but move the machine away from the area
of spillage and avoid creating any source of
ignition until petrol vapors have dissipated.
e Replace all fuel tanks and container caps
securely.
4. Replace faulty silencers.
5. Before using, always visually inspect to see that
the blades, blade nuts and cutter assembly are
not worn or damaged. Replace worn or damaged
blades and nuts in sets to preserve balance.
6. On multi-bladed machines, take care as rotating
one blade can cause other blades to rotate.
Operation
1. Do not operate the engine in a confined space
where dangerous carbon monoxide fumes can
collect.
2. Mow only in daylight or in good artificial light.
3. Avoid operating the equipment in wet grass,
where feasible.
10.
11.
12.
13.
14.
15.
16.
17.
18.
Always be sure of your footing on slopes.
Walk, never run.
For wheeled rotary machines, mow across the
face of slopes, never up and down.
Exercise extreme caution when changing
direction on slopes.
Do not mow excessively steep slopes.
Use extreme caution when reversing or pulling
the lawnmower towards you.
Stop the blade(s) if the lawnmower has to be
tilted for transportation when crossing surfaces
other than grass, and when transporting the
lawnmower to and from the area to be mowed.
Never operate the lawnmower with defective
guards or shields, or without safety devices, for
example deflectors and/or grass catchers, in
place.
Do not change the engine governor settings or
overspeed the engine.
Disengage all blade and drive clutches before
starting the engine.
Start the engine or switch on the motor carefully
according to instructions and with feet well away
from the blade(s).
Do not tilt the lawnmower when starting the
engine or switching on the motor, except 1f the
lawnmower has to be tilted for starting. In this
case, do not tilt it more than absolutely necessary
and lift only the part which 1s away from the
operator.
Do not start the engine when standing in front of
the discharge chute.
Do not put hands or feet near or under rotating
parts. Keep clear of the discharge opening at ali
times.
Never pick up or carry a lawnmower while the
engine 1s running.
19.
20.
21.
22.
Stop the engine and disconnect the spark plug
wire.
before clearing blockages or unclogging chute;
before checking, cleaning or working on the
lawnmower;
after striking a foreign object. Inspect the
lawnmower for damage and make repairs before
restarting and operating the lawnmower;
if lawnmower starts to vibrate abnormally (check
immediately).
Stop the engine
whenever you leave the lawnmower;
before refuelling.
Reduce the throttle setting during engine shut
down and, if the engine is provided with a
shut-off valve, turn the fuel off at the conclusion
of mowing.
Go slow when using a trailing seat.
Maintenance And Storage
1.
Keep all nuts, bolts and screws tight to be sure
the equipment is in safe working condition.
Never store the equipment with petrol in the tank
inside a building where fumes may reach an
open flame or spark.
Allow the engine to cool before storing in any
enclosure.
To reduce the fire hazard, keep the engine,
silencer, battery compartment and petrol storage
area free of grass, leaves, or excessive grease.
Check the grass catcher frequently for wear or
deterioration.
Replace worn or damaged parts for safety.
If the fuel tank has to be drained, this should be
done outdoors.
Sound Pressure Level Sound Power Level
This unit has an equivalent continuous A-weighted This unit has a sound power level of: 100 dB(A)/1
sound pressure at the operator ear of: 88.5 dB(A), pW, based on measurements of identical machines per
based on measurements of identical machines per Directive 84/538/EEC and amendments.
ANSI B71.5-1984 procedures. |
Vibration Level
This unit has a maximum hand-arm vibration level of
10.51 m/s2, based on measurement of identical
machines per ISO 5349 procedures.
Symbol Glossary
Do not open or
remove safety shields
while engine is
running.
Safety alert triangle —
symbol within triangle
indicates a hazard.
Rotating blade can cut
off toes or fingers.
Safety alert symbol Stay clear of mower
blade as long as
engine is running.
To avoid blade failure
when mulching, use
blade stiffener when
mower is equipped
with mulching plug.
Consult technical
manual for proper Transmission
service procedures.
Stay a safe distance
. | Oil
from the machine.
«>
from the mower. —. pren
; >
Read operator's
manual.
Throw or flying
objects — Whole body
exposure
Thrown or flying
objects — Rotary
side-mounted mower.
Keep deflector shield
in place.
Stop engine before
leaving operator
position.
Hourmeter/elapsed
operating hours
Fast
Slow
Decreasing/Increasing
Grease lubrication
- point
Engine start
Disengage 7 | —
Battery charging
condition
Fuel
Neutral
First gear
Second gear
Third gear
Cutting element —
basic symbol
Engine stop
Choke
Primer (start aid)
Push primer three
times.
Properly dispose of
batteries.
Insert key in ignition
switch.
Turn key in ignition
switch.
Move control.
Cutting element —
height adjustment
Pull rope.
Wheel
Wheel traction
Lower control bar.
Raise control bar.
Raise/lower control
bar.
Raise/lower control
bar.
Raise control bar.
Assembly
Handle
Assembly
1. Loosen handle knobs and lift top handle half in
an arc until handle halves are in line and nest
together (Fig. 2).
Note: Use care to prevent pinching or
stretching of cables.
2. Tighten knobs securely.
Note: Rotate handle toward rear of mower
until it snaps into stops in handle
brackets.
Handle Height
The handle has two height positions — high and low
(Fig. 3). Select a handle height position that is most
comfortable for you.
1. To change handle height, squeeze bottom handle
section together and align holes over pins inside
handle brackets.
(Self-propelled Models Only)
1. Slide cable anchor on handle to align hole and
locate over pin inside handle bracket.
Raise control bar.
„д
Lower controi bar.
Note: Belt cover may need to be loosened
and slightly moved out of the way to
make enough room to place handle in
high height setting.
2. Adjust self—propelled cable. See Maintenance
section.
Cover Plate and Guard Plate
Your mower was shipped with a cover plate and
guard plate. For side discharge operation the cover
plate must be installed in the deck opening and the
guard plate over the side discharge opening.
A\ WARNING
POTENTIAL HAZARD
e An uncovered discharge opening will allow
objects to be thrown in operator’s or
bystander’s direction. Also, contact with
blade could occur.
WHAT CAN HAPPEN
e Thrown objects or blade contact can cause
- Serious injury.
HOW TO AVOID THE HAZARD
e Never operate mower unless cover plate,
guard plate or grass chute and catcher are
installed.
1. Stop engine and disconnect spark plug wire
(Fig. 4) before installing or removing cover
plate.
2. Remove screw that fastens cover plate to the
housing (Fig. 5).
3. Two shoulder bolts on the housing protrude
through slotted holes in the cover plate and do
not have to be loosened or removed. Cover plate
moves over the shoulder bolt heads (Fig. 6).
4. Slide cover plate clockwise to install or
counterclockwise to remove.
5. Secure with screw.
6. Install guard plate over side discharge opening
(Fig. 7).
7. Secure with two bolts and nuts.
8. Connect spark plug wire (Fig. 4).
Before Starting
Oil Mix Ratio
Your Toro mower 1$ powered by a 2-cycle engine
which requires a 32:1 mixture of gasoline and oil.
Failure to use the right mixture will result in serious
engine damage. |
Toro Two-Cycle Oil is specially formulated to
provide superior lubrication, make starting easy and
prolong engine life. If Toro Two-Cycle Oil is not
available, mix two gallons of gasoline with 8 ounces
of another high grade two-cycle oil that the NMMA
or BIA-TCW certification printed on the label.
IMPORTANT: Never use automotive oil (i.e.
SAE 30, 10W30 etc.), two-cycle oil that is not
certified NMMA/BIA-TCW or the wrong mix
ratio because the engine can be damaged, and
it would not be covered by the Toro warranty.
4\ DANGER
POTENTIAL HAZARD
e In certain conditions gasoline is extremely
flammable and highly explosive.
WHAT CAN HAPPEN
e A fire or explosion from gasoline can burn
you, others, and cause property damage.
HOW TO AVOID THE HAZARD
e Use a funnel and fill the fuel tank outdoors,
in an open area, when the engine is cold.
Wipe up any gasoline that spills.
e Do not fill the fuel tank completely full.
Add gasoline to the fuel tank until the level
is 1/4” to 1/2” (6 mm to 13 mm) below the
bottom of the filler neck. This empty space
in the tank allows gasoline to expand.
e Never smoke when handling gasoline, and
stay away from an open flame or where
gasoline fumes may be ignited by a spark.
e Store gasoline in an approved container
and keep it out of the reach of children.
e Never buy more than a 30-day supply of
gasoline.
Mixing Gasoline And Oil
This engine is certified to operate on unleaded
gasoline. The Toro Company strongly recommends
the use of fresh, clean, UNLEADED regular grade
gasoline with an octane rating of 85 or higher in Toro
gasoline powered products. Unleaded gasoline burns
cleaner, extends engine life, and promotes good
starting by reducing the build-up of combustion
chamber deposits. In countries other than U.S.A,
leaded gasoline may be used if it 1s commercially
available and unleaded is unavailable.
For simplicity and best engine performance, mix 8
ounces of Toro Two—Cycle Oil with two gallons of
fresh, unleaded regular gasoline. Pour one gallon of
gasoline into an approved gasoline container and add
the correct amount of two-cycle oil. Install cap on
gasoline container and shake to mix oil and gasoline
thoroughly (Fig. 8). Slowly remove cap and add
remaining gasoline.
Note: Do not mix gasoline and oil in the
product fuel tank. Oil that is at room
temperature mixes easily and more
thoroughly than cold oil.
Note: NEVER USE METHANOL,
GASOLINE CONTAINING
METHANOL, GASOHOL
CONTAINING MORE THAN 10%
ETHANOL, PREMIUM GASOLINE
OR WHITE GAS BECAUSE
ENGINE FUEL SYSTEM COULD
BE DAMAGED.
1. Clean around fuel cap before removing (Fig. 9).
Fill fuel tank with gasoline/oil mix to bottom of
filler neck, not into filler neck. DO NOT
OVER-FILL TANK. Replace fuel cap securely
and wipe up any spilled fuel.
Toro recommends that Toro Stabilizer/Conditioner be
used regularly in all Toro gasoline powered products
during operation and storage seasons. Toro
Stabilizer/Conditioner cleans the engine during
operation and prevents gum-like varnish deposits
from forming in the engine during periods of storage.
Do not use fuel additives other than those
manufactured for fuel stabilization during storage
such as Toro’s Stabilizer/conditioner or a similar
product. Toro’s Stabilizer/conditioner is a
petroleum distillate based conditioner/stabilizer.
Toro does not recommend stabilizers with an
alcohol base such as ethanol, methanol or
isopropyl. Additives should not be used to try to
enhance the power or performance of the
machine.
2. Connect spark plug wire (1f disconnected)
(Fig. 4).
Lawn Preparation And Mowing
1. Review SAFETY INSTRUCTIONS and read
this manual carefully before operating mower.
2. Clear area of sticks, stones, wire, branches and
other debris which could be picked up or hit by
cutting blade and become thrown objects.
3. Keep everyone, especially children and pets,
away from area of operation.
4. Avoid striking trees, walls, curbs or other solid
objects. Never deliberately mow over any object.
5. If an object is struck, or mower starts to vibrate,
immediately stop engine, disconnect spark plug
wire and examine mower for damage.
6. Replace blade when necessary with an original
Toro replacement blade.
Operation
Starting Engine
Note: Follow steps in BEFORE STARTING
section.
1. Move throttle lever to 4# (FAST) position
(Fig. 10).
2. Push primer three (3) times (Fig. 11). Wait about
two (2) seconds between each push.
Note: Do not use primer to restart a warm
engine after a short shutdown.
3. Hold blade control bail against upper handle
(Fig. 12).
4. Pull starter handle lightly until resistance 1s felt,
then pull sharply (Fig. 12). Let rope return to
handle slowly.
Note: If engine fails to start after three (3)
pulls, repeat steps 24.
Stopping Engine
1. Move throttle lever to “# (SLOW) position
(Fig. 10).
2. Release blade control bail (Fig. 13). Both the
engine and blade will stop. See your dealer
immediately if they do not.
To Restart Engine
1. Repeat STARTING ENGINE procedure with
throttle lever in 49 (FAST) position.
2. If engine fails to start after three (3) pulls, repeat
steps 2-4 in STARTING ENGINE procedure.
Note: Do not use primer to restart a warm
engine after a short shutdown.
Self—propelled Drive
(self-propelled models oniy)
1. To operate self-propelled drive squeeze
self-propelled bail against handle and hold
(Fig. 14).
Note: Maximum self-propelled ground speed
is fixed. To reduce ground speed,
increase space between bail and
handle.
2. To disengage self-propelled drive, release
self-propelled bail (Fig. 15).
Note: Mower is equipped with free-wheeling
clutches which make it easier to pull
the mower rearward. To disengage
10
clutches, mower may need to be
pushed forward one inch after
self-propelled bail has been released.
Adjusting Cutting Height
3. Each wheel is adjusted individually with a wheel
height adjustment lever. Cutting heights are 17,
1-1/2”, 2”, 2-1/2”, 3” and 3-1/2 inches (25, 38,
51, 64, 76 and 89 mm).
A DANGER
POTENTIAL HAZARD
e Adjusting height-of-cut levers could bring
hands into contact with moving blade.
WHAT CAN HAPPEN
e Contact with rotating blade can cause
serious injury.
HOW TO AVOID THE HAZARD
e Stop engine and wait for all movement to
stop before adjusting cutting height.
* Do not put fingers under housing when
adjusting height-of-cut.
1. To change cutting height pull adjusting lever
toward wheel and move to the desired position
(Fig. 16).
2. Release height adjust lever and seat securely in
notch.
Note: Set all four (4) wheels at the same
height.
Maintenance
Continued safe and dependable operation requires routine maintenance.
Recommended Maintenance Schedule
5 25 50 100
Service Item Service Operation Hours | Hours | Hours | Hours
Check blade and engine mounting fasteners
Fasteners frequently. Keep all nuts, bolts and screws tight to X
ensure safe operation.
Remove and clean each mowing season or every
Air Filter 25 hours. Clean more frequently if operating X
conditions are dusty.
Spark Plug Clean, inspect and gap. Replace if necessary. X
Housing Clean built-up grass clippings and dirt.
Self-propelled Clean grass clippings and debris under belt cover X
Drive and drive belt.
Blade Sharpen or replace; maintain more frequently If X
edge is dulled quickly in rough or sandy conditions.
Check stopping time every 50 hours or at start of
each mowing season. Blade must stop within
Blade Brake 3 seconds of releasing bail; if not see your X
Authorized Toro Service Dealer for repair.
| ubrication Grease rear height adjustor brackets X
(self-propelled models).
Exhaust Ports Clean every 50 hours or at least once each X
mowing season.
Check for leakage and/or deterioration of fuel hose.
Fuel System X
Replace if necessary.
Clean grass clippings, debris or dirt that clog
Cooling System engine air cooling fins and starter. Clean more X
frequently under dirty or high chaff conditions.
11
POTENTIAL HAZARD
WHAT CAN HAPPEN
HOW TO AVOID THE HAZARD
4\ CAUTION
e If you leave the wire on the spark plug, someone could start the engine.
e Accidental starting of the engine could seriously injure you or other bystanders.
e Pull the wire off the spark plug before you do any maintenance. Also push the wire
aside so it does not accidentally contact the spark plug.
Air Filter
Clean air filter once every season or every 25 hours;
clean more frequently under dusty conditions.
Note: Do not operate engine without air filter
clement; extreme engine wear or
damage will occur.
1. To remove air filter, snap cover latch open,
swing to side and unhook (Fig. 17).
2. Remove cover and air filter.
3. Wash air filter in laundry detergent or kerosene
(Fig. 18).
4. Squeeze filter to remove excess liquid and blot
dry with a paper towel or rag.
5. Apply one tablespoon of SAE 30W oil to the air
filter (Fig. 19).
6. Squeeze until oil is distributed evenly
throughout filter. Blot lightly with paper towel to
remove excess oil.
7. Replace filter with cleanest side facing
carburetor.
Note: Be sure filter is fully seated in air box
and is smooth and not folder over,
allowing direct passage of air and dirt.
12
Drain Gasoline
1. Stop engine and wait for engine to cool. Pull
wire off spark plug.
Note: Drain gasoline from a cold engine
only.
2. Remove cap from fuel tank (Fig. 9) and use a
pump-type siphon to drain fuel into clean gas
can.
Note: This is the only procedure
recommended for draining fuel.
3. Reconnect spark plug wire.
4. Run engine until it dies. Try starting engine once
more to make sure gas is out of carburetor.
Spark Plug
A spark plug that is dirty, pitted, carbon-covered or
has worn electrodes may cause hard starting and poor
operation.
Clean or replace spark plug once a season or every 25
hours, whichever occurs first. Use a Champion
RJ12C spark plug or equivalent.
1. Pull wire off spark plug (Fig. 4). Remove spark
plug and clean with a wire brush, removing
carbon build-up. DO NOT SAND-BLAST.
Check condition of plug for cracks and damaged
or worn electrodes. Replace if necessary.
2. Set spark plug gap at .035 inch (.85 mm)
(Fig. 20).
3. Install spark plug by hand, then torque to
180 in.—Ibs. (15 ft.—Ibs.) (20 N-m) (Fig. 4).
4. Reconnect spark plug wire when maintenance 1s
completed.
Clean Mower Housing
A clean mower housing provides the best cutting
performance. Check for grass build-up and clean after
each use.
1. Disconnect spark plug wire (Fig. 4).
2. Run engine dry or remove gas with hand pump.
A WARNING
POTENTIAL HAZARD
e Gasoline is extremely flammable, highly
explosive and under certain conditions can
cause personal injury or property damage.
WHAT CAN HAPPEN
e Tipping mower may cause fuel leakage
from carburetor or fuel tank.
HOW TO AVOID THE HAZARD
e Avoid fuel spills by running engine dry or
remove gas With hand pump, never siphon.
3. Tip mower onto right side (Fig. 21).
4. Scrape built-up grass clippings and dirt from
mower housing with a hardwood scraper.
5. Tip mower upright.
6. Reconnect spark plug wire when maintenance 1s
completed.
7. Fill fuel tank with clean, fresh gasoline/oil mix.
Blade
A straight, sharp blade provides maximum cutting
performance. Regularly inspect and sharpen blade.
AA WARNING
POTENTIAL HAZARD
e Blade is sharp.
WHAT CAN HAPPEN
e Contact with sharp blade can cause serious
personal injury.
HOW TO AVOID THE HAZARD
e Wear gloves or wrap sharp edges of the
blade with a rag.
Blade Straightness
1. Disconnect spark plug wire (Fig. 4).
2. Measure the distance from the bottom edge of
the mower housing to the blade tip (Fig. 22).
Rotate the blade 180° and measure to other blade
Up.
Note: If measurements are not within 1/8
inch (3.2 mm), blade should be
replaced. If, after blade replacement,
the measurements are still not within
1/8 inch (3.2 mm), the crankshaft
should be checked for straightness by
your Authorized Toro Service Dealer.
Blade Removal
1. Remove the blade nut (Fig. 23).
2. Remove the blade from the blade driver
(Fig. 23).
3. Examine blade cutting edges for nicks, cutting
angle and sharpness. Sharpen or replace if
necessary.
13
4. Examine blade driver for bent or sheared drive
lugs. Replace if necessary.
Blade Sharpening
A WARNING
POTENTIAL HAZARD
e When sharpening blade, pieces of blade
could be accidentally thrown.
WHAT CAN HAPPEN
e Thrown objects can cause serious eye
injury.
HOW TO AVOID THE HAZARD
e Wear proper eye protection when
sharpening blade.
1. Sharpen only the leading edge of blade with a
file or grinder. Do not sharpen beyond the
recommended area.
Note: Blade should not be ground more than
5 inches (127 mm) from outside ends
and no less than 2 inches (51 mm)
from trailing edge (Fig. 24).
Blade Balancing
1. Check the balance of blade by placing the center
hole of blade over a nail or screwdriver shank
clamped horizontally in a vise (Fig. 25).
2. If either end of blade rotates downward, grind or
file that end (not the cutting edge). Blade 1s
properly balanced when neither end drops.
Blade Installation
1. Install the blade driver onto the crankshaft (if
removed) (Fig. 23).
with the curved ends toward the mower housing.
Secure blade with blade nut.
14
Locate the blade over the lugs of the blade driver
3. Torque blade nut to 47 ft.—lbs. (63 N-m)
(Fig. 26).
Note: Blade nut must be replaced after
installing and removing four (4) times.
Locking feature will decrease and nut
could loosen if not replaced.
4. Reconnect spark plug wire when maintenance 18
compieted (Fig. 4).
Lubrication
(self-propelled models only)
1. Wipe grease fittings on rear height-of-cut
adjustors (Fig. 27) with clean rag.
2. Install grease gun onto fitting and gently apply
one or two pumps of #2 multi-purpose lithium
grease. Excess grease may damage seals and
prevent proper wheel clutch operation.
Self-propelled Cable
(self-propelled models only)
Whenever the handle height 1s changed, a new
self-propelled cable is installed or traction drive belt
slips, adjustment 1s required.
| Self—propelled cable 1s adjusted on the handle by
moving cable jacket held by cable support.
1. Loosen nut on cable support (Fig. 28).
2. Hold self—propel control 1 to 11/2 1n. (25 to
38 mm) from handle (Fig. 28). |
3. Pull cable jacket down (away from control).
4. Tighten nut on cable support.
5. Release bail and check to see that cable 1s loose.
Note: Cable must be loose with bail in
released position or mower may creep
when bail 1s disengaged.
Self-propelled Drive Cleaning
(self~propelled models only)
Under certain conditions clippings can collect under
belt drive cover and in pulley groove. This could
cause belt slippage, loss of self-propelled drive or
failure to disengage self-propelled drive.
- Clean grass clippings and debris from under belt
cover every 25 hours of operation.
1. Remove screw and slide belt cover to rear,
unhooking tab on front of cover from deck
opening. Tilt cover up to the side and remove
debris (Fig. 29) from under cover and pulley
groove.
2. Reverse procedure to install belt cover.
Exhaust Ports
Carbon deposit build-up causes excessive wear and
loss of power. Check and clean if necessary.
1. Remove spark plug. See SPARK PLUG section.
2. Drain gasoline using a hand pump.
3. Tip mower on its right side (Fig. 21).
A WARNING
POTENTIAL HAZARD
¢ Gasoline is extremely flammable, highly
explosive and under certain conditions can
cause personal injury or property damage.
WHAT CAN HAPPEN
e Tipping mower may cause fuel leakage
from carburetor or fuel tank.
HOW TO AVOID THE HAZARD
¢ Avoid fuel spills by running engine dry or
remove gas with hand pump, never siphon.
10.
11.
12.
13.
14.
15.
16.
17.
Remove the blade nut and blade (Fig. 23). See
BLADE REMOVAL section.
Remove blade driver by tapping with plastic or
fiber hammer in the direction of rotation
(Fig. 30). This will loosen the blade driver from
taper on crankshaft.
Remove capscrews attaching muffler cover and
baffle plate to engine mounting plate (Fig. 31).
Clean carbon deposits from muffler cover and
baffle plate with wire brush making sure exhaust
vents are clear. Wipe muffler clean with paper
towel or rag.
Rotate crankshaft slowly until piston covers
exhaust ports (Fig. 32).
Using a 3/8 inch wooden dowel loosen carbon
deposits by inserting dowel into ports.
Note: Do not use metal tools; they could
scratch piston.
Set mower upright.
Hold blade control bail against upper handle
(Fig. 33) and pull starter rope several times to
blow out loose carbon.
Install baffle and muffler cover to engine
mounting plate (Fig. 31). Torque muffler
capscrews to 155 in.—lbs. (13 ft.—lbs.) (18 N-m).
Attach blade driver and blade with blade nut.
See BLADE INSTALLATION.
Torque blade nut to 47 ft.—Ibs. (63 N-m).
Tip mower upright.
Reconnect spark plug wire when maintenance 1s
completed.
Fill fuel tank with clean, fresh gasoline/oil mix.
15
Troubleshooting
Your mower was designed and built for trouble-free operation. Check the following components and items
carefully. If a problem continues, see your Authorized Toro Service Dealer.
PROBLEM CORRECTIVE ACTION
Engine will not start
—
Fill fuel tank with fresh gasoline/oil mix
Move throttie lever to the FAST position
Press primer three (3) times
> © №
Spark plug
e Connect spark plug wire
e Clean spark plug, check spark plug gap, replace if
damaged
Engine starts hard or loses power
—
Drain and refill fuel tank with fresh gasoline/oil mix
Clean or replace air filter element
Clean mower discharge chute
Clean underside of mower deck
Clean spark plug, check spark plug gap, replace if damaged
pu son
Check engine oil
Engine runs rough
—
Connect spark plug wire
Clean spark plug, check spark plug gap, replace if damaged
Move throttie lever from SLOW to FAST position
EP On
Replace air filter element
Mower or engine vibrates excessively
za
Balance blade
Tighten blade nut
Clean mower discharge chute
Clean underside of mower deck
NS о №
Tighten engine mounting bolts
Uneven cutting pattern Place all four (4) wheels at same height
Sharpen and balance blade
Change mowing pattern
> ON -
Clean underside of mower deck
16
PROBLEM
CORRECTIVE ACTION
Discharge chute plugs
Кое № A
Move throttle lever from SLOW to FAST position
Raise cutting height
Allow grass to dry before mowing
Clean underside of mower deck
Mower will not self-propel
№
Adjust self-propelled cable
Clean debris under belt cover
Accessories
Optional accessories may have been shipped with
your mower or are available from your Authorized
Toro Dealer. For proper installation follow these
instructions.
Rear Grass Catcher
ÁN WARNING 6.
POTENTIAL HAZARD
e An uncovered discharge opening will allow
objects to be thrown in operator’s or
bystander’s direction. Also, contact with
blade could occur.
WHAT CAN HAPPEN
e Thrown objects or blade contact can cause
serious injury.
HOW TO AVOID THE HAZARD
e Never operate mower unless cover plate or
grass chute and catcher are installed.
1. Stop engine and disconnect spark plug wire
(Fig. 4) before installing or removing grass
chute. | |
2. Remove screw that fastens cover plate to
housing (Fig. 5).
3. Two shoulder bolts on housing protrude through
10.
11.
slotted holes in cover plate and do not have to be
loosened or removed. Cover plate moves over
shoulder bolt heads (Fig. 6).
12.
Slide cover plate counterclockwise to remove.
Place front corner of chute baffle into deck
opening. Rotate chute counterclockwise and
push down into deck opening (Fig. 34 & 36).
Note: The chute baffle must go behind the
front deck baffle and between blade
and toe guard to prevent contact with
blade.
. Insert chute support rod through hole in right
side of deck (Fig. 35).
Two shoulder bolts on the mower housing
protrude through slotted holes in the chute
assembly and do not have to be loosened or
removed. Chute assembly moves over the
shoulder bolts (Fig. 35).
Slide chute assembly in a clockwise direction to
install or counterclockwise to remove.
Secure with screw (Fig. 35).
Check clearance between blade tips and chute
baffle making sure there is no contact (Fig. 36).
Note: The chute baffle must go behind the
front deck baffle and between blade
and toe guard to prevent contact with
blade (Fig. 36).
Remove knob and bolt securing left side upper
and lower handle sections (Fig. 37).
Hold hanger clamp on outside of handle
sections. Insert handle bolt from inside of handle
sections through holes in hanger clamp.
Position bag hanger leg into hanger clamp
groove and secure with knob. Repeat steps and
assemble clamp and hanger to right side handle
sections.
17
13. Close rear of bag by folding sides in and —
pressing interlocking rear handle halves together
(Fig. 38).
14. Position rear bag handles into bag hanger on
handle.
15. Grasp bag assembly handle and slide over flange
of grass chute (Fig. 39). Push downward on
handle until it seats into position.
Bag Adjustment
When handle height is changed bag adjustment may
be required. A properly adjusted bag should be taut
on top cloth area between front bag handle and rear
bag hanger handles. If bag is too tight or too loose,
adjust as follows:
1. Remove bag from rear bag hanger. Remove
bolt(s) and knob(s) securing hanger clamps to
handle sections (Fig. 37). Hanger clamps have
four adjustment holes.
2. Reassemble hanger clamps to handle sections
using whichever set of holes best holds bag taut.
Using lower holes in hanger clamps tightens bag
assembly and upper holes in hanger clamps
loosens bag assembly.
Note: Under normal use, bag materials are
subject to deterioration and wear.
Check grass bag often and replace
when necessary with an original
equipment replacement bag. A
weakened or inferior bag may let
objects pass through, causing injury.
ÁN WARNING
POTENTIAL HAZARD
e Keep hands, sticks or other objects out of
grass chute while blade is turning.
WHAT CAN HAPPEN
e Thrown objects or blade contact can cause
serious injury.
HOW TO AVOID THE HAZARD
* Always stop engine when emptying grass
bag and disconnect spark plug wire before
cleaning a clogged chute, bag tunnel or
underside of mower housing.
18
3. Reconnect spark plug wire.
Storage
To prepare lawn mower for off-season storage
perform recommended maintenance procedures. See
MAINTENANCE section.
Store mower in a cool, dry place.
Fuel
POTENTIAL HAZARD
¢ In certain conditions gasoline is extremely
flammable and highly explosive.
WHAT CAN HAPPEN
e A fire or explosion from gasoline can burn
you, others, and cause property damage.
HOW TO AVOID THE HAZARD
® Do not store gasoline (fuel) over long
periods of time.
® To prevent possible explosion of vaporized
fuel, do not store mower with fuel in the
tank or carburetor in an enclosure with an
open flame. (Example: furnace or water
heater pilot light.)
e Allow the engine to cool before storing in
any enclosure.
For long term storage, either drain gasoline from fuel
tank or add a fuel additive to the gasoline. To drain
gasoline, refer to Drain Gasoline, page 12. After fuel
1s drained, start engine and let it idle until all fuel is
consumed and engine stops. Repeat the starting
procedure two more times to ensure all gas is
removed from the engine. If gasoline 1s not drained
and a fuel stabilizer is not added, gum-like varnish
deposits will form and cause poor engine operation,
even starting problems.
Note: If engine is operating on oxygenated or
reformulated gasoline (gasoline
blended with an alcohol or an ether),
remove all fuel from tank and run
engine until it stops from lack of fuel
before storing.
Engine
1.
Remove spark plug. Using an oil can, squirt
about one tablespoon of oil through spark plug
hole (Fig. 40).
Slowly rotate engine several times, using starter
handle, to distribute oil (Fig. 33).
Replace spark plug but DO NOT connect spark
plug wire.
Folding Handle
1.
Squeeze bottom handle section together and
slide past stops of handle brackets (Fig. 41).
Rotate handle toward front of mower (Fig. 42).
Note: Fold handle only as illustrated. If
handle is folded in opposite direction
damage will occur to control cables.
Loosen knobs securing top handle section to
bottom section and fold top handle section back
towards rear of mower into storage position.
Removing From Storage
1.
Unfold handle. See handle assembly instructions
in ASSEMBLY section
Check and tighten all fasteners,
Remove spark plug (Fig. 4) and spin engine
rapidly using starter to blow excess oil from the
cylinder. Clean spark plug or replace if cracked,
broken or electrodes are worn.
Install spark plug and torque to 180 in.-lbs.
(15 ft.-Ibs.) (20 N-m).
Perform recommended maintenance procedures.
See MAINTENANCE section.
Fill fuel tank (Fig. 9) with fresh, clean
gasoline/oil mix.
Reconnect spark plug wire (Fig. 4).
19