JOHN DEERE
WORLDWIDE COMMERCIAL & CONSUMER
EQUIPMENT DIVISION
GX24127
L0
Walk-Behind Mower
MowMentum™JS26, JS36, JS46
OMGX24127 L0
OPERATOR’S MANUAL
North American Version
Litho in U.S.A.
INTRODUCTION
c WARNING: The Engine Exhaust
from this product contains chemicals known
to the State of California to cause cancer,
birth defects or other reproductive harm.
California Proposition 65 Warning
Table of Contents
Introduction................................................................................................ 1
Product Identification ................................................................................. 1
Safety Labels ............................................................................................. 3
Safety Labels ............................................................................................. 4
Safety ........................................................................................................ 5
Assembly ................................................................................................... 8
Operating Controls .................................................................................. 10
Operating ................................................................................................ 12
Service Intervals...................................................................................... 16
Service .................................................................................................... 17
Troubleshooting ....................................................................................... 29
Storage .................................................................................................... 30
Specifications .......................................................................................... 31
Warranty .................................................................................................. 32
Getting Quality Service ........................................................................... 33
Introduction
Thank You for Purchasing a John Deere Product
We appreciate having you as a customer and wish you many years of safe
and satisfied use of your machine.
Using Your Operator Manual
This manual is an important part of your machine and should remain with
the machine when you sell it.
Reading your operator’s manual will help you and others avoid personal
injury or damage to the machine. Information given in this manual will
provide the operator with the safest and most effective use of the machine.
Knowing how to operate this machine safely and correctly will allow you to
train others who may operate this machine.
This manual and safety signs on your machine may also be available in
other languages (see your authorized dealer to order).
Sections in your operator’s manual are placed in a specific order to help
you understand all the safety messages and learn the controls so you can
operate this machine safely. You can also use this manual to answer any
specific operating or servicing questions.
The machine shown in this manual may differ slightly from your machine,
but will be similar enough to help you understand our instructions.
RIGHT-HAND and LEFT-HAND sides are determined by facing in the
direction the machine will travel when going forward. When you see a
broken line (------), the item referred to is hidden from view.
Special Messages
Your manual contains special messages to bring attention to potential
safety concerns, machine damage as well as helpful operating and
servicing information. Please read all the information carefully to avoid
injury and machine damage.
Original Instruction
All information, illustrations and
specifications in this manual are based on
the latest information at the time of
publication. The right is reserved to make
changes at any time without notice.
COPYRIGHT© 2010
John Deere Worldwide Commercial and
Consumer Equipment Division
Deere & Co.
All rights reserved
Previous Editions
COPYRIGHT©
c CAUTION: Avoid injury! This symbol and text highlight
potential hazards or death to the operator or bystanders that may
occur if the hazards or procedures are ignored.
IMPORTANT: Avoid damage! This text is used to tell the operator
of actions or conditions that might result in damage to the
machine.
Introduction - 1
PRODUCT IDENTIFICATION
NOTE: General information is given throughout the manual that may
help the operator in the operation or service of the machine.
Product Identification
Record Identification Numbers
JS26 PIN (500001-)
JS36 PIN (500001-)
JS46 PIN (500001-)
If you need to contact an Authorized Service Center for information on
servicing, always provide the product model and identification numbers.
You will need to locate the model and serial number for the machine and
for the engine of your machine and record the information in the spaces
provided below.
DATE OF PURCHASE:
_________________________________________
DEALER NAME:
_________________________________________
DEALER PHONE:
_________________________________________
PRODUCT IDENTIFICATION NUMBER:
_________________________________________
ENGINE SERIAL NUMBER:
_________________________________________
Register Your Product and Warranty Online
To register your product through the Internet, simply go to
www.JohnDeereWarrantyRegistration.com. Completing the information,
either online or with the product warranty card, will ensure the customer
that their product receives all post sales service and important product
information.
Product Identification - 2
Safety Labels
SAFETY LABELS
Safety Label Location
A
G
B
D
C
E
F
MX28301
Picture Note: Use label number listed in table below to locate
complete text of safety label message following this illustration.
A- DANGER - GC00671
B- WARNING - GX22881
C- DANGER - GX22881
D- DANGER - GX22881
E- WARNING - GX22881
F - WARNING - 34880
G- WARNING - 3255Y
Safety Labels - 3
SAFETY LABELS
Safety Labels
Understanding The Machine Safety Labels
The machine safety labels shown in this section are placed
in important areas on your machine to draw attention to
potential safety hazards.
On your machine safety labels, the words DANGER,
WARNING, and CAUTION are used with this safety-alert symbol.
DANGER identifies the most serious hazards.
The operator’s manual also explains any potential safety hazards
whenever necessary in special safety messages that are identified with
the word, CAUTION, and the safety-alert symbol.
There can be additional safety information contained on parts and
components sourced from suppliers that is not reproduced in this
operator’s manual.
DANGER GC00671
• Wait at least 2 minutes before refueling.
DANGER GX22881
AMPUTATION AND THROWN OBJECT HAZARD
GX22881C
• Keep hands and feet away from deck.
• Do not operate mower unless discharge deflector or entire grass catcher
is in its proper place.
DANGER GX22881
GC00671
• KEEP HANDS and FEET AWAY
WARNING GX22881
AVOID SERIOUS INJURY OR DEATH
GX22881B
• Read operator’s manual.
• Keep safety devices (guards, shields, switches, etc.) in place and
working.
• Go across slopes, not up or down.
• Remove objects that could be thrown by blade.
• Do not mow when children or others are around.
• Look down and behind before and while moving backwards.
GX22881D
• KEEP HANDS and FEET AWAY
WARNING GX22881
GX22881E
• Guard or entire grass catcher must be installed before operating mower.
Safety Labels - 4
SAFETY
WARNING 34880
MX28303
CALIFORNIA PROPOSITION 65 WARNING: Batteries, battery posts,
terminals and related accessories contain lead and lead compounds, and
other chemicals known to the State of Califor nia to cause cancer and birth
defects or other reproductive harm. WASH HANDS AFTER HANDLING.
WARNING 3255Y
Emission Control System Certification Label
NOTE: Tampering with emission controls and components by
unauthorized personnel may result in severe fines or penalties.
Emission controls and components can only be adjusted by EPA
and/or CARB authorized service centers. Contact your John Deere
Commercial and Consumer Equipment Retailer concerning emission
controls and component questions.
The presence of an emissions label signifies that the engine has been
certified with the United States Environmental Protection Agency (EPA)
and/or California Air Resources Board (CARB).
The emissions warranty applies only to those engines marketed by John
Deere that have been certified by the EPA and/or CARB; and used in the
United States and Canada in off-road mobile equipment.
Emission Compliance Period
If your engine has the emission compliance category listed on the
emission control system certification or air index label, this indicates the
number of operating hours for which the engine has been certified to meet
EPA and/or CARB emission requirements. The following table provides
the engine compliance period in hours associated with the category found
on the certification label.
Agency Category Hours
EPA C 125
EPA B 250
GX3255Y
• Read and follow Operating Instructions before running engine.
• Gasoline is flammable. Allow engine to cool at least 2 minutes before
refueling.
• Engines emit carbon monoxide, DO NOT run in enclosed area.
WARNING 7102746
7102746
Picture Note: This label is required and installed on machines sold
in California. This label may also be installed on machines sold in
other locations.
Fire Hazard. Operation of this equipment may create spar ks that can start
fires ar ound dr y vegetation. A spark arrestor may be required. The
operator should contact local fire agencies for laws or regulations relating
to fire prevention requirements.
EPA A 500
CARB Moderate 125
CARB Intermediate 250
CARB Extended 500
Certification
Your mower has been cer tified for compliance with American National
Standards Institute B -71.1-2003, “S afety Specifications” for Power Lawn
Mowers, Lawn and Garden Tractors, and Lawn Tractors.
Safety
Operating Safely
• This cutting 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.
• Read, understand and follow all instructions on the machine and in the
manual before starting. Be thoroughly familiar with the controls and the
proper use of the machine before starting.
• Do not put hands or feet near or under the machine. Keep clear of the
discharge opening at all times.
• Only allow responsible adults, who are familiar with the instructions, to
operate this machine. Local regulations may restrict the age of the
operator.
• Clear the area of objects such as rocks, toys, wire, and similar items
which could be thrown by the blade. Stay behind the handle when the
engine is running.
• Be sure the area is clear of bystanders before operating. Stop machine if
anyone enters the area.
Safety - 5
SAFETY
• Do not operate the mower barefooted or while wearing sandals. Always
wear substantial footwear.
• Do not pull machine backward unless absolutely necessary. Always look
down and behind before and while moving backward.
• Never direct discharged material toward anyone. Avoid discharging
material against a wall or obstruction. Material may ricochet back toward
the operator. Stop the blade when crossing gravel surfaces.
• Do not operate machine without the entire grasscatcher, discharge
guard, rear guard, or other safety protective devices in place and working.
Never operate with the discharge deflector raised, removed, or altered,
unless using a grasscatcher.
• Never leave a running machine unattended.
• Stop the engine and wait until the blade comes to complete stop before
cleaning the machine, removing grasscatcher, or unclogging the discharge
guard.
• Operate machine only in daylight or good artificial light.
• Do not operate the mower while under the influence of alcohol or drugs.
• Never operate mower in wet grass. Always be sure of your footing. Walk;
never run.
• Disengage the drive system, if so equipped, before starting the engine.
• If the machine should start to vibrate abnormally, stop the engine and
check for the cause immediately. Vibration is generally a warning of
trouble.
• Always wear safety goggles or safety glasses with side shields when
operating mower.
• See manufacturer’s instructions for proper operation and installation of
accessories. Only use accessories approved by the manufacturer.
• Inspect machine before you operate. Be sure hardware is tight. Repair or
replace damaged, badly wor n, or missing parts. Make any necessar y
adjustments before you operate.
• Before using, always visually inspect to see that the blades, blade bolts
and the mower assembly are not worn and damaged. Replace worn and
damaged blades as needed.
• Make sure spark plug, muffler, fuel cap and air cleaner are in place
before starting the engine.
• Keep safety labels visible when installing accessories and attachments.
Parking Safely
1. Stop mower on a level surface, not on a slope.
2. Disengage mower blades and wheel drive.
3. Stop the engine.
4. If mower is electric start, remove key from ignition.
5. Wait for engine and all moving par ts to stop.
6. Remove the spark plug wire before servicing the mower.
Using a Spark Arrestor
The engine in this machine is not equipped with a spark arrestor muffler.
The California Public Resources Code, section 4442.5 provides as
follows:
No person shall sell, offer for sale, lease, or rent to any person any internal
combustion engine subject to Section 4442 or 4443, and not subject to
Section 13005 of the Health and Safety Code, unless the person provides
a written notice to the purchaser or bailee, at the time of sale or at the time
of entering into the lease or rental contract, stating that it is a violation of
Section 4442 or 4443 to use or operate the engine on any forest-covered,
brush-covered, or grass-covered land unless the engine is equipped with
a spark arrestor, as defined in Section 4442, maintained in effective
working order or the engine is constructed, equipped, and maintained for
the prevention of fire pursuant to Section 4443. Cal. Pub. Res. Code
4442.5.
Other states or jurisdictions may have similar laws. A spark arrestor for
your machine may be available from your authorized dealer. An installed
spark arrestor must be maintained in good working order by the operator.
Checking Mowing Area
• Clear mowing area of objects that might be
thrown. Keep people and pets out of mowing
area.
• Low-hanging branches and similar obstacles
can injure the operator or interfere with
mowing operation. Before mowing, identify potential obstacles such as
low-hanging branches, and trim or remove those obstacles.
• Study mowing area. Set up a safe mowing pattern. Do not mow where
traction or stability is doubtful.
Rotating Blades are Dangerous -
Protect Children and Prevent
Accidents
Protect Children:
• Tragic accidents can occur if the operator is
not alert to the presence of children. Children are often attracted to lawnmowing machines and mowing activity. Stay aler t to the presence of
children. Never assume that children will remain where you last saw them.
• Keep children indoors, out of the mowing area, and in the watchful eye of
a responsible adult, other than the operator, when a mower is being
operated.
• Be alert and turn mower off if a child enters the work area. They don’t
understand the dangers of rotating blades or the fact that the operator is
unaware of their presence.
• Never allow a child or an untrained person to operate the machine.
• Use extra care when approaching blind corners, shrubs, trees, or other
objects that may block your view of a child.
Operating Safely on Slopes
• Slopes are a major factor related to slip and fall accidents which can
result in severe injury. Operation on all slopes requires extra caution. If you
feel uneasy on a slope, do not mow it.
• Mow across the face of slopes, never up and down. Use extreme caution
when changing direction on slopes.
• Watch for holes, ruts, bumps, rocks or other hidden objects. Uneven
terrain could cause a slip and fall accident. Tall grass can hide obstacles.
• Do not mow on wet grass or excessively steep slopes. Poor footing could
cause a slip and fall accident.
• Do not mow near drop offs, ditches, or embankments. The operator
could lose footing or balance.
• Use extra care with grasscatchers. These can change the stability of the
machine. Do not use grasscatcher on steep slopes.
Wear Appropriate Clothing
• Always wear eye protection when operating
the machine.
• Wear close fitting clothing and safety
Safety - 6
SAFETY
equipment appropriate for the job.
• While operating this machine, always wear substantial footwear and long
trousers. Do not operate the equipment when barefoot or wearing open
sandals.
• Wear a suitable protective device such as earplugs. Loud noise can
cause impairment or loss of hearing.
Practice Safe Maintenance
• Only qualified, trained adults should service
this machine. Understand service procedure
before doing work.
• Never operate machine in a closed area
where dangerous carbon monoxide fumes can collect.
• Keep all nuts and bolts tight, especially blade attachment bolts, to be
sure the equipment is in safe working condition.
• Never tamper with safety devices. Check their proper operation regularly.
• Keep machine free of grass, leaves or other debris build-up. Clean up oil
or fuel spillage and remove any fuel-soaked debris. Allow the machine to
cool before stor ing.
• If you strike a foreign object, stop and inspect the machine. Repair, if
necessary, before restarting.
• Never make adjustments or repairs with the engine running. Wait for all
movement to stop before adjusting, cleaning or repairing. Disconnect the
spark plug wire, and ground against the engine to prevent accidental
starting.
• Check grasscatcher components and the discharge guard frequently and
replace with manufacturer’s recommended parts, when necessary.
Grasscatcher components are subject to wear, damage, and deterioration
which could expose moving parts or allow objects to be thrown.
• Mower blades are sharp. Wrap the blade or wear gloves, and use extra
care when servicing them. Only replace blades. Never straighten or weld
them.
• Do not change the governor setting or overspeed the engine.
• Maintain or replace safety and instruction labels, as necessary.
• Keep hands, feet, clothing, jewelry, and long hair away from any moving
parts, to prevent them from getting caught.
• Never attempt to make wheel height adjustments while the engine is
running.
• Keep all parts in good condition and properly installed. Fix damage
immediately. Replace worn or broken parts.
• Do not strike the flywheel with a hammer or hard object because the
flywheel may later shatter during operation.
Prevent Fires
• Machine fires and structure fires can occur if a machine is stored before
allowing it to cool, if debris is not removed from critical areas of the
machine, or if machine is stored near combustible materials.
• Remove grass and debris completely from engine compartment and
muffler area, and from on top of the mower deck, before and after
operating machine, especially after mowing or mulching in dry conditions.
• Empty any grasscatcher bags or containers completely before storing.
• Always shut off fuel when storing or transporting machine, if the machine
has a fuel shutoff.
• Do not store machine near an open flame or source of ignition, such as a
water heater or furnace.
• Check fuel lines, tank, cap, and fittings frequently for cracks or leaks.
Replace if necessar y.
Handling Fuel Safely
To avoid personal injury or property
damage, use extreme care in handling fuel.
Fuel is extremely flammable and fuel
vapors are explosive:
• Extinguish all cigarettes, cigars, pipes, and
other sources of ignition.
• Use only an approved fuel container. Use
only non-metal, portable fuel containers
approved by the Underwriter’s Laboratory
(U.L.) or the American Society for Testing &
Materials (ASTM). If using a funnel, make sure
it is plastic and has no screen or filter.
• Never remove the fuel tank cap or add fuel with the engine running. Allow
engine to cool before refueling.
• Never add fuel to or drain fuel from the machine indoors. Move machine
outdoors and provide adequate ventilation.
• Clean up spilled fuel immediately. If fuel is spilled on clothing, change
clothing immediately. If fuel is spilled near machine, do not attempt to start
the engine but move the machine away from the area of spillage. Avoid
creating any source of ignition until fuel vapors have dissipated.
• Never store the machine or fuel container where there is an open flame,
spark, or pilot light such as on a water heater or other appliance.
• Prevent fire and explosion caused by static electric discharge. Static
electric discharge can ignite fuel vapors in an ungrounded fuel container.
• 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 fueling.
• Remove fuel-powered equipment from the truck or trailer and refuel it on
the ground. If this is not possible, then refuel such equipment with a
portable container, rather than from a fuel dispenser nozzle.
• Keep the nozzle in contact with the rim of the fuel tank or container
opening at all times until the fueling is complete. Do not use a nozzle lockopen device.
• Never overfill fuel tank. Replace fuel tank cap and tighten securely.
• Replace all fuel container caps securely after use.
• For gasoline engines, do not use gas with methanol. Methanol is harmful
to your health and to the environment.
Handling Waste Product and Chemicals
Waste products, such as, used oil, fuel, coolant, brake fluid, and batteries,
can harm the environment and people:
• Do not use beverage containers for waste fluids - someone may drink
from them.
• See your local Recycling Center or author ized dealer to learn how to
recycle or get rid of waste products.
• A Material Safety Data Sheet (MSDS) provides specific details on
chemical products: physical and health hazards, safety procedures, and
emergency response techniques. The seller of the chemical products
used with your machine is responsible for providing the MSDS for that
product.
Safety - 7
ASSEMBLY
Assembly
Prepare Handle Assembly
1. Remove mower from shipping carton. Mower shown as removed from
shipping car ton.
B
A
C
A
MX44278
2. Loosen upper handle knobs (A) on both sides and unfold upper handle
(B) toward front of machine until upper handle aligns with and fits into
lower handle (C). Securely tighten upper handle knobs (A) on both sides.
IMPORTANT: Avoid damage! Take care not to pinch cables
between handles.
B
A
G
E
F
MX44280
5. When unfolding handle, be certain that the loop in the operator
presence cable (E) is not removed by pulling on cable. Be certain tie strap
(F) is installed at position 8 cm (3 in.) from cent er of upper handle knob
(A). Be certain that there is a minimum distance of 10 cm (4 in.) (G) of
center of loop between cable (E) and upper handle (B).
c CAUTION: Avoid injury! Pull starter handle slowly to avoid
starting engine.
D
3. Lift handle assembly (B)(C) up and toward back of machine.
NOTE: Carriage bolts, lockwashers and knobs (D) may already be
installed in brackets. Simply remove and install.
4. Align holes in lower handle with one of three height adjustment holes in
mounting brackets. Insert one carriage bolt into desired hole in each
bracket, out through lower handle, and secure with lockwasher and knob
(D), tightening securely.
C
B
MX44279
H
I
MX41636
6. While squeezing the operator presence control down against the drive
handle, slowly pull starter handle (H) up to rope guide (I) located on right
side of upper handle as shown, and hook rope through guide.
Install Discharge Assembly
Your mower comes with a side discharge cover installed on the mower
deck, and is ready to be operated as a mulching mower. See the
Operating section for information to install the discharge deflector or the
grass bag.
Check and Add Engine Oil
1. Remove dipstick and check engine oil level.
Assembly - 8
ASSEMBLY
2. Add the supplied oil as needed up to the FULL mark on the dipstick. Do
not overfill.
Insert Fuel Stabilizer Cartridge in Fresh Start™ Fuel Cap (If Equipped)
Insert the fuel stabilizer cartridge if your machine is equipped with a Fresh
Start fuel cap.
Fill Fuel Tank
Fill the fuel tank.
Check Machine Safety System
Perform safety system check to make sure the operator presence control
is functioning properly.
Assembly - 9
Operating Controls
OPERATING CONTROLS
Operator Station Controls and Features (JS26, JS36)
A
N
M
B
C
D
E
F
L
K
J
I
H
MX27667
Key Description Key Description
A MowMentum™ Drive Handle H Air Cleaner Cover
B Operator Presence Control I Side Discharge Cover
C Drive Cable Adjuster J Rear Wheel Cutting Height Adjustment Lever (JS26)
All Wheel Cutting Height Adjustment Lever (JS36)
D Rear Door, Spring-Loaded K Handle Height Adjustment
E Fuel Fill Cap L Grass Bag
F Oil Fill and Dipstick M Starter Handle
G
G Front Cutting Height Adjustment Levers (JS26) N Neutral Lock
Operating Controls - 10
Operator Station Controls (JS46)
OPERATING CONTROLS
A
B
C
D
E
F
G
H
O
N
M
I
L
K
J
MX27676
Key Description Key Description
A MowMentum™ Drive Handle I Air Cleaner Cover
B Electric Start Key Switch J Side Discharge Cover
C Operator Presence Control K All Wheel Cutting Height Adjustment Lever
D Drive Cable Adjuster L Handle Height Adjustment
E Rear Door, Spring-Loaded M Grass Bag
F Batter y Box N Starter Handle
G Oil Fill and Dipstick O Neutral Lock
H Fuel Fill Cap
Operating Controls - 11
OPERATING
Operating
Daily Operating Checklist
❏ Test safety systems.
❏ Make sure all guards, deflectors and covers are in place and
tightened.
❏ Check engine oil level.
❏ Check fuel level.
❏ Check fuel stabilizer cartridge in fuel cap.
❏ Check that handle knobs are tight.
❏ Check for proper cutting height.
❏ Remove grass and debris from machine.
❏ Check area below machine for leaks.
Adjusting Cutting Height
c CAUTION: Avoid injury! Rotating blades are dangerous and
can cut fingers and toes. Stop engine and wait for blade to stop
rotating before adjusting cutting height.
JS26 model is front wheel drive, with separate wheel adjustment levers on
each front wheel, and a single adjustment lever for rear wheels.
JS36 and JS46 models are rear wheel drive with a single height
adjustment lever at the right rear wheel.
Key Cutting Height Adjustments
J
I
A
MX27680
Picture Note: Right side shown.
2. Pull the height adjusting lever (J) outward and move to the desired
cutting height. The lowest cutting height is location (A). The highest cutting
height is location (I).
NOTE: Front wheels heights are adjusted individually. The front
height of cut levers can be set over the bent tabs and between them
to obtain all nine positions. Both wheels should be set in the same
position to ensure even grass cutting.
I
A
J
(A) 30 mm (1.2 in.)
(B) 38 mm (1.5 in.)
(C) 48 mm (1.9 in.)
(D) 56 mm (2.2 in.)
(E) 66 mm (2.6 in.)
(F) 76 mm (3.0 in.)
(G) 86 mm (3.4 in.)
(H) 97 mm (3.8 in.)
(I) 107 mm (4.2 in.)
JS26
A single height adjustment lever at the right rear wheel raises or lowers the
rear of the mower deck equally and simultaneously. Each front wheel has
a height adjustment lever than raises and lowers the wheel individually.
1. Park machine safely. (See Parking Safely in the Safety Section.)
MX27679
Picture Note: Right side shown.
3. Pull the height adjusting lever (J) on each front wheel outward and
move to the desired cutting height. The lowest cutting height is location
(A). The highest cutting height is location (I).
JS36, JS46
A single height adjustment lever at the right rear wheel is connected to
linkage which raises or lowers the mower deck equally at all four wheels
simultaneously.
1. Park machine safely. (See Parking Safely in the Safety Section.)
Operating - 12
OPERATING
J
I
A
MX27682
Picture Note: Right side shown.
K
MX27681
Picture Note: Left side shown.
2. Pull the height adjusting lever (J) outward and move to the desired
cutting height. The lowest cutting height is location (A). The highest cutting
height is location (I).
3. Linkage (K) raises and lowers the four wheels simultaneously.
2. Align hole on each side of lower handle with one of three height
adjustment holes (D) in mounting brackets.
• Top hole in mounting bracket will be highest handle position.
3. Install carriage bolt outward through hole in each mounting bracket and
then through handle. Install lock washers, knobs and tighten to secure.
Testing Safety Systems
c CAUTION: Avoid injury! Engine exhaust fumes contain
carbon monoxide and can cause serious illness or death.
Do not run an engine in an enclosed area, such as a garage, even
with doors or windows opened.
Move the machine to an outside area before running the engine.
The safety systems installed on your machine should be checked before
each machine use. Be sure you have read the machine operator manual
and are completely familiar with the operation of the machine before
performing these safety system checks.
Use the following checkout procedures to check for normal operation of
machine.
If there is a malfunction during one of these procedures, do not operate
machine. See your authorized dealer for service.
Perform these tests in a clear open area. Keep bystanders away.
Adjusting Handle Height
A
B
C
D
MX27683
1. Remove plastic knob (A), lock washer and carriage bolt securing lower
handle (B) to mower deck bracket (C) at each side of mower deck. For first
time set-up remove knob, washer and carriage bolt from pre-assembly
position in mower deck brackets.
Operating - 13
Testing Operator Presence Control
1. Hold the operator presence control against the drive handle.
2. Start engine.
3. Release operator presence control.
c CAUTION: Avoid injury! Rotating blades are dangerous. Do
not look under mower or put hands under mower to view blade
rotation . Listen for blades to stop.
4. Listen for blade and engine to stop. Do not look under mower to check
blade.
Result: Blade and engine should stop within three seconds.
If blade and engine continue to run, there is a problem with your machine
safety system. See your John Deere dealer.
OPERATING
Starting and Stopping Engine
c CAUTION: Avoid injury! Engine exhaust fumes contain
carbon monoxide and can cause serious illness or death.
Do not run an engine in an enclosed area, such as a garage, even
with doors or windows opened.
Move the machine to an outside area before running the engine.
Starting Engine-Manual Pull Start
C
B
D
Picture Note: Model JS46 with electric start shown.
1. Pivot the drive handle (A) all the way back.
2. Move the neutral lock (B) forward to LOCK.
3. Hold the operator presence control (C) against the drive handle.
A
MX27686
c CAUTION: Avoid injury! Rapid retraction of starter cord, or
kickback, can pull hand and arm toward engine faster than you can
let go.
Broken bones or other injuries can result.
Pull starter cord slowly until resistance is felt, then pull rapidly to
start engine.
4. Pull starter handle (D) slowly until resistance is felt, then pull fast and
steady until the engine starts.
NOTE: After engine has started, continue to hold operator presence
control against drive handle or blade and engine will stop.
5. When engine starts, return rope slowly until starter handle is in bracket.
6. Move neutral lock back to UNLOCK and pivot the drive handle forward
to engage drive system.
Starting Engine-Electric Start
C
B
E
Picture Note: Model JS46 with electric star t shown.
1. Pivot the drive handle (A) all the way back.
2. Move the neutral lock (B) forward to LOCK.
3. Hold the operator presence control (C) against the drive handle.
NOTE: After engine has started, continue to hold operator presence
control against drive handle or blade and engine will stop.
4. Inser t key (D) into ignition switch. Turn and hold ignition key until the
mower star ts, but never longer than five seconds.
5. If engine does not start, use pull start (E) or charge the battery.
6. Move neutral lock back to UNLOCK and pivot the drive handle forward
to engage drive system.
Stopping Engine
1. Release operator presence control (C).
2. Remove key from ignition.
D
A
MX27686
Operating the Mower
NOTE: After the engine has been started, the operator presence
control bar must be held against the drive handle to keep the engine
running.
1. Start the engine, hold the operator presence control bar against the
drive handle.
2. Move the drive handle forward to engage the drive or increase speed.
3. Move the drive handle back to decrease speed or stop.
4. Release the operator presence control bar to stop the engine and blade.
Operating - 14
OPERATING
Emergency Stopping
A
Release operator presence control (A) fully:
• Mower will stop.
• Blade will stop.
• Engine will stop.
Using Neutral Lock
Installing Side Discharge Deflector
c CAUTION: Avoid injury! Rotating blades can throw objects
and debris:
• Do not mow without discharge chute or grass catcher, or
approved mulch plug or guard, in place.
• Stop engine before removing or installing discharge chute or
grass catcher, or approved mulch plug or guard.
1. Park machine safely. (See Parking Safely in the Safety Section.)
MX27691
A
B
MX27688
2. Lift the spring-loaded rear door (A) to access rear discharge area. If not
already installed, install mulch plug (B) with imprinted arrow pointing
upward as shown.
A
MX27733
Picture Note: Shown in locked position.
When engaged, the neutral lock prevents the drive handle from moving
forward and engaging the drive unit.
Use the neutral lock to lock the drive handle in a stationary position for
starting and transporting the machine or operating in a push mode. The
neutral lock should not be used to lock the drive handle in the forward
position.
To engage the neutral lock, pull the dr ive handle all the way back, and
push the neutral lock (A) fully forward. This will prevent the drive handle
from moving forward and unexpectedly engaging the drive unit.
To disengage the neutral lock, simply pull the lever fully backward. This will
allow the drive handle to operate normally.
C
E
D
MX27689
3. Raise and hold side discharge cover (C).
4. Install discharge deflector (D) on two ver tical flanges (E) on the mower
deck.
5. Lower side discharge cover and allow it to rest against side discharge
deflector. The spring tension on the side discharge cover will secure the
side discharge deflector in place.
Operating - 15
SERVICE INTERVALS
Installing Grass Bag
c CAUTION: Avoid injury! Rotating blades can throw objects
and debris:
• Do not mow without discharge chute or grass catcher, or
approved mulch plug or guard, in place.
• Stop engine before removing or installing discharge chute or
grass catcher, or approved mulch plug or guard.
1. Park machine safely. (See Parking Safely in the Safety Section.)
A
5. Lower the spring-loaded rear door to rest on the grass bag.
6. Store the mulch plug for future use.
Using the Mower for Mulching
1. Install mulch plug.
A
MX44281
2. Make sure side discharge cover (A) is closed.
B
3. Adjust cutting height to remove only 1/3 of the grass at a time.
4. Raise cutting height, if grass clumping occurs.
2. LIft the spr ing-loaded rear cover (A) to access the mulch plug.
3. Remove mulch plug (B) from mower.
C
E
D
MX27688
Service Intervals
Servicing Your Machine
IMPORTANT: Avoid damage! Operating in extreme conditions
may require more frequent service intervals:
• Engine components may become dirty or plugged when
operating in extreme heat, dust or other severe conditions.
• Engine oil can degrade if machine is operated constantly at slow
or low engine speeds or for frequent short periods of time.
Please use the following timetables to perform routine maintenance on
your machine.
Before Each Use
• Check hardware tightness.
• Fill tank with fresh fuel.
• Check engine oil level.
• Clean debris from around muffler, engine cooling fins, and engine cover.
• Clean debris from mower.
• Test safety systems.
Break In - After First 5 Hours of Operation
• Change engine oil.
MX44958
4. Grasp the wire form handle (C) at the top of the grass bag and position
the grass bag at the back of the mower housing so that the two hooks (D)
on the grass bag frame hook over the rear door pivot shaft (E).
Service Intervals - 16
Every 25 Hours or Once a Year
• Change engine oil.
• Replace oil filter (JS46).
• Clean air filter foam precleaner.
SERVICE
• Check air filter paper element, replace if very dirty.
• Check blade bolt for tightness.
• Clean drive belt and transmission area.
• Check drive belt for wear and tension.
Every 50 Hours or Once a Year
• Check spark arrestor (if equipped) and clean if necessary.
Every 100 Hours or Once a Year
• Replace spark plug.
• Replace air filter paper element.
Service
Adjusting Carburetor
NOTE: Carburetor is calibrated by the engine manufacturer and
should not require any adjustments.
If engine is operated at altitudes above 1829 m (6,000 ft), some
carburetors may require a special high altitude main jet. See your
John Deere dealer.
If engine is hard to start or runs rough, check the Troubleshooting section
of this manual.
After performing the checks in the troubleshooting section and your engine
is still not performing correctly, contact your John Deere dealer.
Avoid Fumes
The following John Deere oils are also recommended, based on their specified temperature range:
• TURF-GARD™
• PLUS- 4™
Other oils may be used if above John Deere oils are not available,
provided they meet the following specification:
• API Service Classification SJ or higher
Checking Engine Oil
1. Park machine safely. (See Parking Safely in the Safety Section.)
A
MX44282
Picture Note: JS26 and JS36 shown.
c CAUTION: Avoid injury! Engine exhaust fumes contain
carbon monoxide and can cause serious illness or death.
Do not run an engine in an enclosed area, such as a garage, even
with doors or windows opened.
Move the machine to an outside area before running the engine.
Engine Oil
Use oil viscosity based on the expected air temperature range during the
period between oil changes.
NOTE: Below 40° F (4° C) the use of SAE30 will result in hard
starting. Above 80° F (27° C) the use of 10W-30 may cause increased
oil consumption. Check oil level more frequently.
SAE 10W-30
SAE 30
30
10050122
40
-20 0 20 40
-40
-40
The following John Deere oils are preferred:
• TORQ-GARD SUPREME™ (SAE30)
-20-30
32
F
C
0
-10
60 80
10
20
B
MX27693
Picture Note: JS46 shown.
2. Clean area around dipstick (A or B).
3. Remove dipstick and wipe clean.
4. Install and tighten dipstick.
5. Remove dipstick.
6. Check oil level on dipstick. Oil must be between ADD and FULL marks.
IMPORTANT: Avoid damage! Do not overfill. Overfilling with oil
can cause the engine to not start or hard starting. If oil is over the
FULL mark on the dipstick, drain oil to reduce oil level in engine.
7. If oil level is low, add oil to bring oil level no higher than FULL mark on
dipstick. Do not overfill.
Service - 17
8. Install and tighten dipstick.
SERVICE
Changing Engine Oil
NOTE: Be sure the fuel tank is at least half empty before changing
the oil. Change oil after mowing or run the engine briefly to lower the
fuel in the tank to the appropriate level.
1. Run engine for at least five minutes to warm up oil.
c CAUTION: Avoid injury! Touching hot surfaces can burn
skin. The engine, components, and fluids will be hot if the engine
has been running. Keep hands and body away from hot surfaces
when servicing or working near the engine and components.
2. Park machine safely. (See Parking Safely in the Safety Section.)
3. Remove dipstick.
4. Position drain pan and turn mower onto its side to drain engine oil from
the dipstick filler tube location into the drain pan.
5. After oil has drained, return mower to an upright position and clean
around dipstick filler tube.
IMPORTANT: Avoid damage! Do not overfill. Overfilling can cause
smoking, hard starting, fouling of spark plug, and oil saturation of
air filter.
6. Add oil through dipstick filler tube. Check oil level and continue to add
oil to FULL mark on dipstick.
7. Install dipstick and connect spark plug wire.
Servicing Air Cleaner Element
1. Park machine safely. (See Parking Safely in the Safety Section.)
A
3. Inspect the foam precleaner (C) at the inside of the cover (A). If the
foam precleaner is dirty:
a.Remove it from the cover.
IMPORTANT: Avoid damage! The foam precleaner consists of a
thin foam layer with a wire mesh backing. Care must be taken to
not distort the wire mesh backing when cleaning or drying the
precleaner.
b.Carefully wash precleaner in a solution of warm water and liquid
detergent.
c.Rinse precleaner thoroughly. Gently blot up excess water with a dry
cloth until precleaner is completely dry.
d.Replace the precleaner at the inside of the cover with the foam side
toward the paper filter and the printed arrows pointing up.
C
D
C
D
MX39975
c CAUTION: Avoid injury! Touching hot surfaces can burn
skin. The engine, components, and fluids will be hot if the engine
has been running. Allow the engine to cool before servicing or
working near the engine and components.
2. Let engine cool.
JS26 and JS36
B
A
MX39974
1. Clean dirt and debris from the air cleaner cover (A).
2. Loosen screw (B) and tilt cover down against side discharge cover.
IMPORTANT: Avoid damage! Dirt and debris can enter the engine
through a damaged filter element:
• Do not wash paper element.
• Do not attempt to clean paper element by tapping against
another object.
• Do not use pressurized air to clean element.
• Replace element only if it is very dirty, damaged or the seal is
cracked.
4. Inspect the paper element (D) without removing it. If the paper element
is damaged or dirty, tilt it outward to remove and replace it with a new
element.
5. Clean air cleaner base carefully, preventing any dirt from falling into
carburetor.
6. Install new paper element into air cleaner base.
7. Close cover and tighten screw.
Service - 18
SERVICE
JS46
B
1. Clean dirt and debris from the air cleaner cover (A).
2. Loosen knob (B) and remove cover from mower.
A
7. Install cover and tighten knob.
Cleaning and Gapping Spark Plug
1. Park machine safely. (See Parking Safely in the Safety Section.)
c CAUTION: Avoid injury! Touching hot surfaces can burn
skin. The engine, components, and fluids will be hot if the engine
has been running. Allow the engine to cool before servicing or
working near the engine and components.
2. Let engine cool.
3. Disconnect spark plug wire. Remove spark plug.
4. Clean spark plug carefully with a wire brush.
5. Inspect spark plug and replace if damaged.
MX27694
A
C
MX27695
3. Inspect the foam precleaner (C) without removing it. If the foam
precleaner is dirty:
• Remove the filter carefully, leaving the paper element in the air cleaner
housing.
• Wash the precleaner in a solution of warm water and liquid detergent.
• Rinse precleaner thoroughly. Squeeze out excess water in a dry cloth
until precleaner is completely dry.
IMPORTANT: Avoid damage! Dirt and debris can enter the engine
through a damaged filter element:
• Do not wash paper element.
• Do not attempt to clean paper element by tapping against
another object.
• Do not use pressurized air to clean element.
• Replace element only if it is very dirty, damaged or the seal is
cracked.
M85200a
6. Adjust gap:
• JS26, JS36: 0.76 mm (0.030 in.)
• JS46: 0.51 mm (0.020 in.)
7. Install and tighten plug to 20 N•m (15 lb-ft).
8. Connect spark plug wire.
Cleaning Debris from Engine
c CAUTION: Avoid injury! Touching hot surfaces can burn
skin. The engine, components, and fluids will be hot if the engine
has been running. Allow the engine to cool before servicing or
working near the engine and components.
IMPORTANT: Avoid damage! The engine can overheat or catch
fire if not kept clean of debris. Clean engine of debris after every
use.
Do not use water to clean engine . Use brush or dry cloth.
1. Park machine safely. (See Parking Safely in the Safety Section.)
2. Let engine cool.
4. Inspect the paper element without removing it. If the paper element is
damaged or dirty, remove and replace it with a new element.
5. Clean air cleaner base carefully, preventing any dirt from falling into
carburetor.
6. Install dry foam precleaner onto paper element and install into air
cleaner base.
Service - 19
SERVICE
To adjust drive cable:
A
C
3. Clean recoil cover (A) with brush or clean rag.
4. Clean area around muffler (B) and under shroud (C).
B
MX44282
Adjusting Ground Speed Control
B
A
C
MX39952
Picture Note: Operator Presence Control shown in released
position.
When the operator presence control (A) is held back against the drive
handle (B), and the drive handle is moved forward, the drive system is
engaged. Pushing the drive handle fur ther forward increases the ground
speed. Pulling the drive handle back decreases ground speed and will
ultimately disengage the drive system.
This occurs because the drive handle is connected to the traction drive
belt tensioning mechanism by a cable (C) that runs under the left side of
the handle assembly. As the drive belt wears, belt tension decreases, and
ground speed at a given drive handle position changes.
If top ground speed of the mower has decreased due to belt stretch or
wear, the drive cable (C) must be adjusted to increase belt tension.
C
• Locate the drive cable (C) and thumbwheel adjuster (D) under the left
side of the handle assembly.
NOTE: Descriptions are based on the operator facing forward in
cutting position.
• Rotate the thumbwheel upward (counter-clockwise) to increase belt
tension.
• Start engine and check that drive system operates properly and pulls the
mower in cutting conditions when drive handle is engaged.
NOTE: Drive system should disengage when drive handle is pulled
all the way back.
• If drive system does not disengage when drive handle is pulled all the
way back, adjust thumbwheel downward (clockwise) to decrease belt
tension. Start engine and check for proper disengagement.
D
MX39981
Replacing Drive Belt (JS26)
Removing Drive Belt
c CAUTION: Avoid injury! Stop engine and wait for all moving
parts to stop before doing any service or adjustments on the
machine. Disconnect spark plug and wait for all components to
cool before working on machine.
1. Park machine safely. (See Parking Safely in the Safety Section.)
2. Remove the grass bag, if attached.
c CAUTION: Avoid injury! Blades are sharp. Always wear
gloves when handling blades or working near blades.
IMPORTANT: Avoid damage! To help prevent air cleaner damage
and hard starting, turn mower so the muffler side is down.
NOTE: Be sure the spark plug is disconnected and the fuel tank is at
least half empty before tipping mower on its side.
3. Tip mower over to rest on its side with the muffler down. Blocks can be
placed under the handle bracket to keep the side slightly elevated.
Service - 20
SERVICE
NOTE: It is not necessary to remove the blade when removing the
belt covers or replacing the drive belt.
A
F
H
G
B
4. Loosen two bolts (A) securing belt guides (B).
C
5. Remove two torx head screws (C).
MX44270
MX44271
I
E
MX44273
7. Remove two screws (E) and belt guide (F) from drive unit (G) and
around pulley (H). Remove belt (I) from drive pulley.
8. Pull belt through opening into underside of mower deck housing.
Remove belt around engine sheave and mower blade and out from mower
deck.
Installing Drive Belt
K
G
J
MX44271
1. Place belt around blade and onto engine sheave (J).
2. Route other end of belt back through opening (K) to drive unit (G).
D
MX44272
6. Tip mower over to an upright position and remove black cover (D).
Service - 21
SERVICE
F
H
E
MX44273
3. Install belt on drive unit pulley (H).
4. Install belt guide (F) over belt on drive unit and secure with screws (E)
removed earlier. Do not overtighten belt guide screws.
C
MX44271
7. Secure cover with two torx head screws (C).
8. Tip mower over to an upright position, and adjust thumbwheel tensioner
on drive belt cable as desired.
Replacing Drive Belt (JS36, JS46)
Removing Drive Belt
c CAUTION: Avoid injury! Stop engine and wait for all moving
parts to stop before doing any service or adjustments on the
machine. Disconnect spark plug and wait for all components to
cool before working on machine.
D
MX44272
5. Install cover (D) and tip mower over onto its side with the muffler down.
A
L
B
MX44270
6. Adjust two belt guides (A) so they are approximately 0.4 mm 1/16 in. (L)
away from belt. Tighten two bolts (B) to secure position.
1. Park machine safely. (See Parking Safely in the Safety Section.)
2. Remove the grass bag, if attached.
A
C
B
MX44419
3. Raise rear door (A) and remove mulch plug (B), if installed.
4. Rotate handle (C) forward to raise mower to maximum raised height.
Service - 22
SERVICE
NOTE: It is not necessary to remove the blade when removing the
belt cover or replacing the drive belt.
D
MX44274
5. Remove the screw (D) from top of mower deck.
c CAUTION: Avoid injury! Blades are sharp. Always wear
gloves when handling blades or working near blades.
IMPORTANT: Avoid damage! To help prevent air cleaner damage
and hard starting, turn mower so the muffler side is down.
NOTE: Be sure the spark plug is disconnected and the fuel tank is at
least half empty before tipping mower on its side.
6. Tip mower over to rest on the side with the muffler down. Blocks can be
placed under the handle bracket to keep the side slightly elevated.
H
E
7. Remove four bolts (E) and two bolts (F).
8. Remove rear baffle (G) and belt cover (H).
E
G
F
MX44418
9. Disconnect transmission control cable fitting (I) from transmission (J).
Service - 23
I
J
MX44275
SERVICE
Installing Drive Belt
K
M
L
K
MX44276
10. Rotate transmission to gain access to the two screws (K) attaching the
belt guide (L) to the transmission. Remove two screws and belt guide.
11. Remove belt from around transmission pulley (M).
N
Q
O
N
Q
1. Carefully route belt around blade tip (Q) and up onto blade sheave (P).
2. Adjust two belt guides (O) so they are approximately 0.4 mm 1/16 in.
(R) away from belt. Tighten two bolts (N) to secure position.
O
R
P
N
O
MX44432
P
N
O
MX44432
12. Loosen two bolts (N) and remove belt from around two belt guides (O)
and engine pulley (P). Carefully remove belt from between mower blade
tip (Q) and outer lip of mower deck, being careful to work on one end at a
time.
K
M
L
K
MX44276
3. Route other end of belt back to drive unit , and install belt on drive unit
pulley (M).
4. Install belt guide (L) over belt on drive unit and secure with two screws
(K) removed earlier. Do not overtighten belt guide screws.
Service - 24
SERVICE
I
J
MX44275
5. Connect transmission control cable fitting (I) onto transmission (J).
D
MX44274
8. Tip mower over to an upright position and install screw (D) to secure
belt cover.
H
E
E
T
S
MX44280
9. Adjust thumbwheel tensioner (S) on drive belt cable clockwise or
counterclockwise so that 1/2 in. of threads (T) are exposed past the top
end of the adjuster block.
G
F
A
6. Install rear baffle (G) and belt cover (H).
7. Install four bolts (E) and two bolts (F).
MX44418
Service - 25
C
B
MX44419
10. If previously installed, raise rear door (A) and install mulch plug (B).
SERVICE
11. Rotate handle (C) rearward to lower mower to desired mowing height.
Replacing Fuses
1. Park machine safely. (See Parking Safely in the Safety Section.)
B
A
MX28034
2. Remove screw (A) and battery box cover (B).
C
Servicing Mower Blade
c CAUTION: Avoid injury! Rotating blades are dangerous.
Before adjusting or servicing mower:
• Disconnect spark plug wire and battery negative (-) cable to
prevent engine from starting accidently.
• Always wear gloves when handling mower blades or working
near blades.
Removing Mower Blade
1. Park machine safely. (See Parking Safely in the Safety Section.)
IMPORTANT: Avoid damage! To help prevent air cleaner damage
and hard starting, turn mower so the muffler side is down.
NOTE: Be sure the fuel tank is at least half empty before tipping
mower on its side.
2. Turn mower onto its side.
C
MX28035
3. Remove fuse cover (C) and replace fuse.
4. Replace fuse cover.
5. Install battery box cover with screw.
Grease
IMPORTANT: Avoid damage! The recommended grease is
effective within an average air temperature range of -29 to 135
degrees C (-20 to 275 degrees F).
If operating outside that temperature range, contact your
servicing dealer for a special-use grease.
Use a general all-purpose grease with an NLGI grade No.2 rating.
Wet or high speed conditions may require use of a special-use grease.
Contact your Servicing dealer for information.
A
B
MX44269
3. Remove bolt (A), washer (B) and blade (C).
4. Inspect blade; sharpen, balance or replace blade as necessary.
Installing Mower Blade
NOTE: Sharpened edges on blade tips must face upward when
installing blade.
1. Lubricate bolt threads lightly with a general purpose grease or oil to
prevent rusting and seizing.
D
E
B
A
2. Install blade so that blade hub (D) fits between blade flanges (E).
Service - 26
MX22481
SERVICE
3. Install washer (B) and bolt (A). Make sure washer is installed with cup
side to the blade.
4. Tighten bolt to 54 N•m (40 lb-ft).
Sharpening Blades
c CAUTION: Avoid injury! Blades are sharp. Always wear
gloves when handling blades or working near blades.
Always wear safety eye protection when grinding.
• Sharpen blades with grinder, hand file, or electric blade shar pener.
A
B
MIF
• Keep original bevel (A) when grinding.
• Blade should have 0.40 mm (1/64 in.) cutting edge (B) or less.
• Balance blades before installing.
Balancing Blades
c CAUTION: Avoid injury! Blades are sharp. Always wear
gloves when handling blades or working near blades.
1. Clean blade.
M61524
2. Put blade on nail in a vise. Turn blade to horizontal position.
3. Check balance. If blade is not balanced, heavy end of blade will drop.
4. Grind bevel of heavy end. Do not change blade bevel.
Inserting Fuel Stabilizer Cartridge in Fresh Start™ Fuel Cap
c CAUTION: Avoid injury! Fuel stabilizer is a hazardous
chemical and can be harmful or fatal if swallowed. Do not take
internally. Avoid contact with eyes. Avoid breathing the chemical
vapors.
Read safety instructions on stabilizer container label before using.
Fuel stabilizer contains 2,6-di-tert-butylphenol (128-39-2) and
aliphatic petroleum distillate (64742-47-8). In case of emergency,
contact a physician immediately and call 1-800-424-9300 for
material safety information.
NOTE: Your machine may be equipped with a Fresh Start fuel cap
that requires a fuel stabilizer cartridge. If equipped, check
periodically and replace cartridge when empty.
A
A
B
1. Remove Fresh Start fuel cap (A) from fuel tank.
2. Place silver foil seal end of car tridge (B) into opening (C) on bottom side
of fuel cap.
3. Press to snap cartridge into place.
4. Remove the white tab to expose membrane (D).
5. Install the fuel cap on fuel tank.
D
Using Proper Fuel
Use regular grade unleaded fuel with an octane rating of 87 octane or
higher. Fuel blends containing up to 10% ethanol or up to 15% MTBE
reformulated fuel are acceptable. Do not use fuel or additives containing
methanol as engine damage can occur.
Always use fresh, clean fuel that is purchased in a quantity that can be
used within approximately 30 days, or add fuel stabilizer.
Fuel is blended to give best seasonal performance. To avoid engine
performance problems such as hard starting or vapor lock, use in-season
fuel. Use fuel during warm weather that was purchased during that
season, and use fuel during cold weather that was purchased during that
season.
Fuel can become stale in machines with engines that are used seasonally
or infrequently during a season. Stale fuel can produce varnish and plug
carburetor components which can affect engine performance.
Keep fuel storage container tightly covered and in a cool area out of direct
sunlight. Fuel can break down and degrade if not sealed properly or
exposed to sun and heat.
Condensation may collect in the fuel tank because of a variety of operating
or environmental conditions and, over time, may affect your machine’s
operation. Fill fuel tank at the end of daily use and store fuel in plastic
containers to reduce condensation.
For best year-round performance and fuel-handling, add stabilizer to fuel
immediately after fuel purchase. Such practice helps prevent engine
performance problems and allows fuel storage in the machine all year
C
MX22483
Service - 27
SERVICE
without draining.
Filling Fuel Tank
c CAUTION: Avoid injury! Fuel vapors are explosive and
flammable:
• Shut engine off before filling fuel tank.
• Allow engine to cool before refueling.
• Do not smoke while handling fuel.
• Keep fuel away from flames or sparks.
• Fill fuel tank outdoors or in well ventilated area.
• Clean up spilled fuel immediately.
• Use clean approved non-metal container to prevent static
electric discharge.
IMPORTANT: Avoid damage! Dirt and water in fuel can cause
engine damage:
• Clean dirt and debris from the fuel tank opening.
• Use clean, fresh, stabilized fuel.
• Fill the fuel tank at the end of each day’s operation to keep
condensation out of the fuel tank.
• Use a non-metallic funnel with a plastic mesh strainer when
filling the fuel tank or container.
Fill fuel tank at the end of each day’s operation to prevent condensation
and freezing during cold weather.
1. Park machine safely. (See Parking Safely in the SAFETY section.)
2. Allow engine to cool.
3. Remove any trash from area around fuel tank cap.
4. Remove fuel tank cap slowly to allow any pressure built up in tank to
escape.
5. Fill fuel tank only to bottom of filler neck. Do not overfill.
6. Install fuel tank cap.
• Gas models: Turn cap until clicks.
Service the Battery Safely
c CAUTION: Avoid injury! The battery produces a flammable
and explosive gas. The battery may explode:
• Do not smoke or have open flame near battery.
• Wear eye protection and gloves.
• Do not allow direct metal contact across battery posts.
• Remove negative cable first when disconnecting.
• Install negative cable last when connecting.
Removing Battery
1. Park machine safely. (See Parking Safely in the Safety Section.)
B
A
Servicing Battery (JS46 only)
WARNING: Battery posts, terminals and related accessories contain lead
and lead components, chemicals known to the State of California to cause
cancer and reproductive harm. Wash hands after handling.
Service - 28
MX28034
2. Remove screw (A) and battery box cover (B).
C
D
MX28035
3. Disconnect black negative battery cable connector (C).
TROUBLESHOOTING
4. Disconnect red positive battery cable connector (D).
5. Lift battery out of battery box.
Installing Battery
1. Set battery in battery box with terminals to the front.
2. Install red positive battery cable connector (D) with hardware removed
earlier.
3. Install black negative battery cable connector (C) with hardware
removed earlier.
4. Install battery cover and secure with screw.
Charging Battery with Supplied DC Charger
IMPORTANT: Avoid damage! Use the supplied DC charger that
comes with your mower to charge battery. Do not use any other
type of battery charger.
A
IF CHECK
Engine Starts Hard, Loses
Power, or Runs Rough
Engine Stalls Cold engine.
Engine Vibrates Loose blade bolt.
Mower Mows Unevenly Height adjusters are not even (JS26).
Discharge Chute Plugs Grass not dry.
Stale or dirty fuel.
Dirty air cleaner components.
Dirty spark plug.
Engine speed needs adjusting - See
your John Deere Dealer.
Cutting height too low.
Mowing too fast.
Blade bent or not balanced.
Drive belt loose or frayed.
Mowing pattern not changed.
Blade dull, bent, or not balanced.
Ground speed too fast for conditions.
Cutting height not raised high enough.
Dirty or full grass bag.
Mowing too fast.
MX28302
1. Plug charger wiring connector (A) into batter y connector.
2. Plug charger into 110V house wall outlet and charge battery for 48
hours. Charging battery for longer periods of time will not damage battery.
Troubleshooting
Using Troubleshooting Chart
If you are experiencing a problem that is not listed in this chart, see your
authorized dealer for service.
When you have checked all the possible causes listed and you are still
experiencing the problem, see your authorized dealer.
IF CHECK
Engine Will Not Start Fuel tank is empty.
Disconnected or dirty spark plug.
Batter y dead (JS46).
Stale or dirty fuel.
Excess oil in engine or air cleaner filter
saturated with oil.
Mower Jerks or Will Not Move Drive belt broken.
Transmission/wheel drive out of
adjustment.
Neutral lock is locked.
Mulched Grass Clumps or
Rough
Slow Maximum Ground
Speed
Grass not dry.
Mowing too fast.
Blade dull.
Cutting height set too low.
Adjust drive cable using thumbwheel
adjuster to increase ground speed.
Storage
Storing Safety
c CAUTION: Avoid injury! Fuel vapors are explosive and
flammable. Engine exhaust fumes contain carbon monoxide and
can cause serious illness or death:
• Run the engine only long enough to move the machine to or
from storage.
• Machine fires and structure fires can occur if a machine is
stored before allowing it to cool, or if debris is not removed
from around the engine and muffler, or if stored near
combustible materials.
• Do not store vehicle with fuel in the tank inside a building
where fumes may reach an open flame or spark.
• Allow the engine to cool before storing the machine in any
enclosure.
Troubleshooting - 29
SPECIFICATIONS
Preparing Machine for Storage
1. Repair any worn or damaged parts. Replace par ts if necessary. Tighten
loose hardware.
2. Remove belt shield. Clean belt and transmission area. Do not use
water to clean this area. Install shield.
IMPORTANT: Avoid damage! Do not use high pressure spray
when cleaning under the deck. High pressure spray may cause
damage to clutch and transmission parts.
3. Clean under the deck.
4. Sharpen mower blade.
5. Paint scratched or chipped metal surfaces to prevent rust.
6. Apply light coat of engine oil to pivot and wear points to prevent rust.
7. Lubricate grease points.
Preparing Fuel and Engine For Storage
Fuel:
If you have been using “Stabilized Fuel,” add stabilized fuel to tank until the
tank is full.
NOTE: Filling the fuel tank reduces the amount of air in the fuel tank
and helps reduce deterioration of fuel.
If you are not using “Stabilized Fuel” follow Inserting Fuel Stabilizer
Cartridge in Fresh Start Fuel Cap instructions in this manual, or follow the
instructions below to use stabilizer.
1. Park machine safely in a well-ventilated area. (See Parking Safely in the
SAFETY section.)
NOTE: Try to anticipate the last time the machine will be used for the
season so very little fuel is left in the fuel tank.
2. Turn on engine and allow to run until it runs out of fuel.
3. For machines equipped with a key switch, turn key to off position.
7. Store the machine in a dry, protected place. If machine is stored
outside, put a waterproof cover over it.
Folding Handles
IMPORTANT: Avoid damage! Avoid damage to mower control
cables:
• Do not crimp cables when folding handle bars.
• Do not attempt to fold upper mower handle forward.
1. Remove grass bag if installed.
A
A
MX44281
2. Remove knobs (A), lockwashers, and carriage bolts that secure handles
to mower.
3. Carefully fold handle assembly forward over mower. Do not crimp
cables.
4. Install carr iage bolts, lockwashers, and knobs back into location in lower
handle.
IMPORTANT: Avoid damage! Stale fuel can produce varnish and
plug carburetor or injector components and affect engine
performance.
• Add fuel conditioner or stabilizer to fresh fuel before filling tank.
4. Mix fresh fuel and fuel stabilizer in separate container. Follow stabilizer
instructions for mixing.
5. Fill fuel tank with stabilized fuel and run engine for a few minutes to
allow fuel mixture to circulate through carburetor.
Engine:
Engine storage procedure should be used when vehicle is not to be used
for longer than 60 days.
1. Change engine oil and filter while engine is warm.
2. Ser vice air filter if necessar y.
3. Clean debris from engine air intake screen.
4. On gas engines:
• Remove spark plugs. Put 30 mL (1 oz.) of clean engine oil in cylinders.
• Install spark plugs, but do not connect spark plug wires.
• Crank the engine five or six times to allow oil to be distributed.
5. Clean the engine and engine compartment.
6. Close fuel shut-off valve, if your machine is equipped.
C
B
MX44279
5. Loosen knobs (B) enough to allow upper handle (C) to pivot toward the
rear, over the mower.
Specifications
Engine
JS26 and JS36 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Manufacturer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Briggs and Stratton
Model Series. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 700 Series Quantum
Displacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 190 cc (11.57 cu in.)
Specifications - 30
SPECIFICATIONS
Torque Power. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7.0
Valves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Side
Start . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Pull Cord
Choke/Primer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ReadyStart
JS46 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Manufacturer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Briggs and Stratton
Model Series . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .875 Series W14
Displacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 190 cc (11.57 cu in.)
Torque Power. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8.75
Valves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Overhead
Start . . . . . . . . . . . . . . . . . . . . . . . Electric Start with Pull Cord Backup
Choke/Primer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ReadyStart
Capacities
Fuel Tank (JS26, JS36) . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.95 L (1.0 qt)
Fuel Tank (JS46) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.14 L (1.2 qt)
Engine Oil. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.6 L (20 oz)
Rear Grass Bag . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74 L (2.5 bu)
Machine Specifications
Deck Material . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Steel
Cutting Height Range . . . . . . . . . . . . . . . . . . 32 - 107 mm (1.2 - 4.2 in.)
Cutting Width. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56 cm (22 in.)
Blade Hardware Torque . . . . . . . . . . . . . . . . . . . . . . . . 54 N•m (40 lb-ft)
Weight (approx.), JS26, JS36 . . . . . . . . . . . . . . . . . . . . . . . 43 kg (95 lb)
Weight (approx.), JS46 . . . . . . . . . . . . . . . . . . . . . . . . . . . 45 kg (100 lb)
Recommended Lubricants
Grease . . . . . . . . . . . . . . . . . . . . General all-purpose, NLGI grade No.2
Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87 Octane Gasoline or higher
Fuel Blends . . . . . . . . Up to 10% Ethanol or 15% MTBE Reformulated
Engine Oil. . . . . . . TORQ-GARD SUPREME® (SAE 30 or SAE 10W-30)
(Specifications and design subject to change without notice)
Specifications - 31
WARRANTY
Warranty
Product Warranty
Product warranty is provided as part of John Deere’s support program for
customers who operate and maintain their equipment as described in this
manual.
Engine related warranties stated in this manual refer only to emissionsrelated parts and components of your engine. The complete engine
warranty, less emission-related parts and components, is provided
separately as the Limited Warranty for New John Deere Commercial &
Consumer Equipment.
John Deere, Federal and California Emissions Control
System Warranty Statement (Small Off-Road Gas
Engines)
Your Warranty Rights and Obligations
California Air Resources Board (CARB), the United States Environmental
Protection Agency (EPA), and John Deere are pleased to explain the
emissions control system warranty on your small off-road engine and
equipment. In California, 2006 and later small off-road engines and
equipment must be designed, built and equipped to meet the State’s
stringent anti-smog standards. (In other states, 1997 and later model year
equipment engines must be designed, built and equipped to meet the U.S.
EPA regulations for small non-road, spark ignition engines.) John Deere
must warrant the emissions control system on your small off-road engine
and equipment for the periods of time listed below provided there has
been no abuse, neglect or improper maintenance of your small off-road
engine and equipment.
Your emissions control system may include parts such as the carburetor,
fuel hose, fuel-injection system and ignition system. Also included may be
connectors and other emissions related assemblies.
Where a warrantable condition exists, John Deere will repair your small
off-road engine and equipment at no cost to you including diagnosis, parts
and labor.
John Deere Emissions Control System Warranty Coverage
Small off- road engines and equipment are warranted relative to emissions
control parts for two years. If any emissions related part on your engine or
equipment is defective, the part will be repaired or replaced by John
Deere.
Owner’s Warranty Responsibilities
As the small off-road engine and equipment owner, you are responsible for
the performance of the required maintenance listed in your owner’s
manual. John Deere recommends that you retain all receipts covering
maintenance on your small off-road engine and equipment, but John
Deere cannot deny warranty solely for lack of receipts or for your failure to
ensure all scheduled maintenance is performed.
As the small off-road engine and equipment owner, you should however
be aware that John Deere may deny you warranty coverage if your small
off-road engine and equipment or a part has failed due to abuse, neglect,
improper maintenance or unapproved modifications.
You are responsible for presenting your small off-road engine and
equipment to an authorized John Deere Commercial and Consumer
Equipment Retailer as soon as a problem exists. The warranty repairs
should be completed in a reasonable amount of time, not to exceed 30
days.
If you have any questions regarding your warranty rights and
responsibilities, you should contact your John Deere Commercial and
Consumer Equipment Retailer, or the John Deere Customer Contact
Center at 1-877-881-0430.
Length Of Warranty Coverage
John Deere warrants to the initial owner and each subsequent purchaser
that the small off-road engine and equipment is:
• Designed, built and equipped so as to conform with all applicable
regulations adopted by the California Air Resources Board (CARB) for
2006 and later engines and equipment, if labeled as such, and all
applicable regulations of the United States Environmental Protection
Agency (EPA) for 1997 and later equipment engines; and
• Free from defects in materials and workmanship which can cause the
failure of an emissions warranted part for a period of two years after the
engine and equipment is delivered to the initial retail purchaser. John
Deere is liable for damages to other engine components caused by the
failure of a warranted part during the warranty period. If any emissions
related part on your engine or equipment is defective, the part will be
repaired or replaced by John Deere.
Warranted Parts
Coverage under this warranty extends only to the parts listed below (the
emissions control system parts) to the extent these parts were present on
the engine and equipment purchased.
Fuel Metering System:
• Carburetor and internal parts (or fuel injection system).
• Air/fuel ratio feedback and control system.
• Cold start enrichment system.
Evaporative System:
• Fuel tank, fuel cap and tet her.
• Fuel hose, line, fittings, clamps.
• Fuel pump, fuel shut-off valve.
• Fuel vapor hoses, fittings.
• Carbon canister.
• Rollover/slant valve for fuel vapor control.
Air Induction System:
• Air cleaner
• Intake manifold.
Ignition System:
• Spark plugs.
• Magneto or electronic ignition system.
• Spark advance/retard system.
Exhaust System:
• Exhaust manifold.
• Catalyst muffler.
Miscellaneous Items Used in Above Systems
• Vacuum and temperature switches.
• Electronic controls.
• Hoses, belts, connectors and assemblies.
Since emissions related parts may vary slightly from model to model,
certain models may not contain all of these parts and certain models may
contain functionally equivalent par ts.
Warranty Service And Charges
Warranty service shall be provided during customary business hours at
any authorized John Deere Commercial and Consumer Equipment
Retailer. Repair or replacement of any warranted part will be performed at
no charge to the owner, including diagnostic labor which leads to the
determination that a warranted part is defective, if the diagnostic work is
performed at an authorized John Deere Commercial and Consumer
Warranty - 32
GETTING QUALITY SERVICE
Equipment Retailer. Any parts replaced under this warranty shall become
the property of John Deere.
Maintenance Warranty Coverage
a) Any warranted part that is not scheduled for replacement as required
maintenance is warranted as to defects for the warranty period. Any such
part repaired or replaced under the warranty is warranted for the
remaining warranty period.
b) Any warranted part that is scheduled only for regular inspection to the
effect of “repair or replace as necessary” is warranted as to defects for the
warranty period. Any such part repaired or replaced under the warranty is
warranted for the remaining warranty period.
c) Any warranted part which is scheduled for replacement as required
maintenance is warranted as to defects only for the period of time up to
the first scheduled replacement for that part. Any such part repaired or
replaced under the warranty is warranted for the remainder of the period
prior to the first scheduled replacement point for that part.
d) Normal maintenance, replacement or repair of emissions control
devices and systems, which are being done at the customer’s expense,
may be performed by any repair establishment or individual; however,
warranty repairs must be performed by an authorized John Deere
Commercial and Consumer Equipment Retailer.
e) Any replacement part that is equivalent in performance and durability
may be used in the performance of any non-warranty maintenance or
repairs, and shall not reduce the warranty obligations of John Deere.
Consequential Warranty Coverage
Warranty coverage shall extend to the failure of any engine components
caused by the failure of any warranted par t still under warranty.
Limitations
This Emissions Control System Warranty shall NOT cover any of the
following:
a) Repair or replacement required as a result of (i) misuse or neglect, (ii)
improper maintenance or unapproved modifications, (iii) repairs
improperly performed or replacements improperly installed, (iv) use of
replacement parts or accessories not conforming to John Deere
specifications which adversely affect performance and/or durability, (v)
alterations or modifications not recommended or approved in writing by
John Deere.
b) Replacement parts, other services and adjustments necessary for
normal maintenance.
c) Transportation to and from the John Deere Commercial and Consumer
Equipment Retailer, or service calls made by the Retailer.
Limited Liability
a) The liability of John Deere under this Emissions Control System
Warranty is limited solely to the remedying of defects in materials or
workmanship. This warranty does not cover inconvenience or loss of use
of the small off-road engine and equipment or transportation of the
equipment to or from the John D eere Commercial and Consumer
Equipment Retailer. JOHN DEERE SHALL NOT BE LIABLE FOR ANY
OTHER EXPENSE, LOSS, OR DAMAGE, WHETHER DIRECT,
INCIDENTAL, CONSEQUENTIAL (EXCEPT AS LISTED ABOVE UNDER
“COVERAGE”) OR EXEMPLARY ARISING IN CONNECTION WITH THE
SALE OR USE OF OR INABILITY TO USE THE SMALL OFF-ROAD
ENGINE AND EQUIPMENT FOR ANY OTHER PURPOSE.
b) NO EXPRESS EMISSIONS CONTROL SYSTEM WARRANTY IS
GIVEN BY JOHN DEERE WITH RESPECT TO THE ENGINE AND
EQUIPMENT EXCEPT AS SPECIFICALLY SET FORTH IN THIS
DOCUMENT. ANY EMISSIONS CONTROL SYSTEM WARRANTY
IMPLIED BY LAW, INCLUDING ANY WARRANTY OF
MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, IS
EXPRESSLY LIMITED TO THE EMISSIONS CONTROL SYSTEM
WARRANTY TERMS SET FORTH IN THIS DOCUMENT.
c) No dealer is author ized to modify this John Deere, Federal and
California Emissions Control System Warranty.
Getting Quality Service
Service Literature
If you would like a copy of the Par ts Catalog or Technical Manual for this
machine call:
• U.S. & Canada: 1-800-522-7448.
• All Other Regions: Your John Deere dealer.
Parts
We recommend John Deere quality parts and lubricants, available at your
John Deere dealer.
When you order parts, your John Deere dealer needs the serial number or
product identification number (PIN) for your machine or attachment. These
are the numbers that you recorded in the Product Identification section of
this manual.
Order Service Parts Online
Visit http://JDParts.deere.com for your Internet connection to parts
ordering and information.
Part Numbers
Item Part Number
Mower Blade GX23522
Traction Drive Belt (JS26) GX23501
Traction Drive Belt (JS36, JS46) GX23549
Battery (JS46) SW4L-BS
Spark Plug (JS26, JS36) MIU12354
Spark Plug (JS46) M143270
Oil Filter (JS46) MIA11787
Air Cleaner
• Foam Pre-Cleaner (JS26, JS36)
• Foam Pre-Cleaner (JS46)
• Paper Filter Element (JS26, JS36)
• Paper Filter Element (JS46)
(Part numbers ar e subject to change without notice. Part numbers may be
different outside the U.S.A.)
John Deere Quality Continues with Quality Service
John Deere provides a process to handle your questions or problems,
should they arise, to ensure that product quality continues with your John
Deere dealer’s parts and service support.
Follow the steps below to get answers to any questions you may have
about your product.
1. Refer to your attachment and machine operator manuals.
2. Contact your John Deere dealer with unanswered questions.
3. In North America or Canada, call the John Deere Customer Contact
center.
•Call 1-800-537-8233 and provide product serial and model number.
• LG493537S
• MIU12719
• LG491588JD
• MIU12718
Getting Quality Service - 33
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