Go POWER+ ZT4200S User manual

WARNING: To reduce the risk of injury, the user must read and understand the Operator’s Manual before
using this product. Save these instructions for future reference.
ELECTRIC ZERO TURN MOWER
OPERATOR’S MANUAL
56-VOLT LITHIUM-ION
ELECTRIC
ZERO TURN MOWER
MODEL NUMBER ZT4200S/ZT4200S-FC
Español p. 167
Français p. 79

56-VOLT LITHIUM-ION ELECTRIC ZERO TURN MOWER — ZT4200S/ZT4200S-FC2
TABLE OF CONTENTS
Safety Information ...........................................................................3-9
Introduction ................................................................................10
Specications ...............................................................................10
Recommended Accessories ....................................................................11
Description ..............................................................................12-21
Assembly ...............................................................................22-32
Using EGO Power+ App with Your Mower ..........................................................33
Customizing Your Mowing and Driving Experience ...............................................33-34
Operation ...............................................................................35-48
Maintenance .............................................................................49-64
Troubleshooting ..........................................................................65-70
Fault Code & Mower Status Indicator Reference .................................................71-76
Warranty ................................................................................77-78

356-VOLT LITHIUM-ION ELECTRIC ZERO TURN MOWER — ZT4200S/ZT4200S-FC
SAFETY INFORMATION
READ ALL INSTRUCTIONS!
FCC STATEMENT
1. This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions:
1) This device may not cause harmful interference.
2) This device must accept any interference received, including interference that may cause undesired operation.
2. Changes or modifications not expressly approved by the party responsible for compliance could void the user's
authority to operate the equipment.
NOTICE: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to
Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a
residential installation. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and
used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no
guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to
radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try
to correct the interference by one or more of the following measures: Reorient or relocate the receiving antenna. Increase
the separation between the equipment and receiver. Connect the equipment into an outlet on a circuit different from that
to which the receiver is connected. Consult the dealer or an experienced radio/TV technician for help.
SAFETY SYMBOLS
The purpose of safety symbols is to attract your attention to possible dangers. The safety symbols and the explanations
with them deserve your careful attention and understanding. The symbol warnings do not, by themselves, eliminate any
danger. The instructions and warnings they give are no substitutes for proper accident prevention measures.
WARNING: Be sure to read and understand all safety instructions in this Operator’s Manual, including all safety alert
symbols such as “DANGER,” “WARNING,” and “CAUTION” before using this tool. Failure to follow all instructions listed
below may result in electric shock, fire, and/or serious personal injury.
SYMBOL MEANING
SAFETY ALERT SYMBOL: Indicates DANGER, WARNING, or CAUTION. May be used in conjunction with other
symbols or pictographs.
WARNING: The operation of any power tools can result in foreign objects being thrown into your eyes,
which can result in severe eye damage. Before beginning power tool operation, always wear safety goggles
or safety glasses with side shields and a full face shield when needed. We recommend a Wide Vision Safety
Mask for use over eyeglasses or standard safety glasses with side shields. Always use eye protection which
is marked to comply with ANSI Z87.1.
READ & UNDERSTAND
OPERATOR'S MANUAL

56-VOLT LITHIUM-ION ELECTRIC ZERO TURN MOWER — ZT4200S/ZT4200S-FC4
SYMBOLS
This page depicts and describes safety symbols that may appear on this product. Read, understand, and follow all
instructions on the machine before attempting to assemble and operate.
Safety Alert Precautions that involve your safety
Read & Understand
Operator’s Manual
To reduce the risk of injury, user must read and understand
operator’s manual before using this product.
Eye Protection Always wear safety goggles or safety glasses with side shields
and a full face shield when operating this product.
Maintain Safety Devices Do not open or remove safety shields while the product is
running.
WARNING — Keep
Hands and Feet Away
To reduce the risk of injury, keep hands and feet away from
rotating parts. Do not operate unless discharge cover or grass
bag is in its proper place. If damaged, replace immediately.
DANGER — Keep
Bystanders Away Do not mow when children or others are around.
Never carry children Never carry children or anyone, even when the blades are off.
Look behind while
backing.
Always look down and behind you before and when maneuvering
in reverse or turning around. Make sure children, bystanders, and
pets are clear of the area.
DANGER — Steep slope
hazard
Use extra caution on slopes. Do not mow slopes greater than 15
degrees. Do not use on slopes near open water.
DANGER — Thrown
objects
Remove objects that can be thrown by the blade in any direction.
Wear safety glasses.
DANGER — Go over the
edge or into the water
Stay at least two mowing widths (7 ft /2.13 m) away from any
ditches, drop-offs, or water to avoid accident going over the edge
or into the water.

556-VOLT LITHIUM-ION ELECTRIC ZERO TURN MOWER — ZT4200S/ZT4200S-FC
Recycle Symbols
This product uses lithium-ion (Li-ion) batteries. Local, state, or
federal laws may prohibit disposal of batteries in ordinary trash.
Consult your local waste authority for information regarding
available recycling and/or disposal options.
IPX4 Ingress Protection Degree Protection from splashing water
V Volt Voltage
Direct Current Type or a characteristic of current
mm Millimeter Length or size
in. Inch Length or size
Ft-lb Foot-pound Torque
Nm Newton meter Torque
kg Kilogram Weight
lbs Pounds Weight
°C Degrees Celsius Temperature
°F Degrees Fahrenheit Temperature
MPH Miles per hour Velocity
km/h Kilometers per hour Velocity
RPM Revolutions per minute Rotational speed
PSI Pounds per square inch Intensity of pressure
kPa Kilopascal Intensity of pressure
NOTE: See Fig. 1 & 2 for additional LCD symbols and operation instructions.
WARNING: To ensure safety and reliability, all repairs should be performed by a qualified service technician.

56-VOLT LITHIUM-ION ELECTRIC ZERO TURN MOWER — ZT4200S/ZT4200S-FC6
SAFE OPERATION PRACTICES FOR RIDE-ON MOWER
DANGER: This machine is capable of amputating hands and feet and throwing objects. Failure to observe the
following safety instructions could result in serious injury or death.
GENERAL INFORMATION
◾Read, understand, and follow instructions and warnings in this manual and on the machine and attachments.
◾Only allow operators, who are responsible, trained, familiar with the instructions, and physically capable to operate
the machine.
◾Do not carry passengers and keep bystanders away.
◾Do not operate the machine while under the influence of alcohol or drugs.
◾Follow the manufacturer’s recommendation for wheel weights or counterweights.
PREPARATION BEFORE OPERATING
◾Clear the operating area of any objects which could be thrown by or interfere with operation of the machine.
◾Keep the area of operation clear of all bystanders, particularly small children. Stop the machine and attachment(s) if
anyone enters the area.
◾Do not operate the machine without the entire grass catcher, discharge chute, or other safety devices in place and
functioning properly. Check frequently for signs of wear or deterioration and replace as needed.
◾Wear appropriate personal protective equipment such as safety glasses, hearing protection, and footwear.
OPERATION
◾Only operate the machine in daylight or good artificial light.
◾Avoid holes, ruts, bumps, rocks, or other hidden hazards. Uneven terrain could overturn the machine, or cause
operator to lose their balance or footing.
◾Do not put hands or feet near rotating parts or under the machine. Keep clear of the discharge opening at all times.
◾Do not direct discharge material toward anyone. Avoid discharging material against a wall or obstruction. Material
may ricochet back toward the operator. Stop the blade(s) when crossing gravel surfaces.
◾Do not leave a running machine unattended. Always park on level ground, disengage the attachment, set parking
brake, and stop the motor.
◾Do not mow in reverse unless absolutely necessary. Always look down and behind before and while backing.
◾Avoid mowing wet grass. Poor footing could cause a slip and fall accident.
◾If situations occur that are not covered in this manual, use care and good judgment. Contact EGO Customer Service
for assistance.

756-VOLT LITHIUM-ION ELECTRIC ZERO TURN MOWER — ZT4200S/ZT4200S-FC
◾Use only with the battery packs and chargers listed below:
BATTERY PACK
CHARGER
(Charge battery packs
separately)
CHARGER
(Charge via charging port)
BA1400, BA1400-FC, BA2800, BA2800-FC,
BA4200, BA4200-FC, BA1400T, BA1400T-FC,
BA2240T, BA2240T-FC, BA2242T, BA2242T-FC,
BA2800T, BA2800T-FC, BA4200T, BA4200T-FC,
BA5600T, BA5600T-FC, BA6720T, BA6720T-FC
CH2100, CH2100-FC,
CH3200, CH3200-FC,
CH5500, CH5500-FC,
CH7000, CH7000-FC,
CH2800D, CH2800D-FC
CHV1600/CHV1600-FC
NOTE: In order to start this mower, EGO batteries totaling 15Ah (2 x BA4200/BA4200T) or more are required. For best
performance, we recommend use of EGO batteries that total 30Ah or more.
CHILDREN SPECIFIC
◾Tragic accidents can occur if the operator is not alert to the presence of children. Children are often attracted to the
machine and the mowing activity. Never assume that children will remain where you last saw them.
◾Keep children out of the operating area and under the watchful care of a responsible adult other than the operator.
◾Do not carry children, even with the blade(s) shut off. Children could fall off and be seriously injured or interfere with
safe machine operation. Children who have been given rides in the past could suddenly appear in the mowing area
for another ride and be run over or backed over by the machine.
SLOPE SPECIFIC
WARNING: Slopes are a major factor related to accidents. Operation on slopes requires extra caution.
◾Travel in the manufacturer recommended direction on slopes. Use caution while operating near drop-offs.
◾Do not operate machine under any condition where traction, steering, or stability is in question. Tires could slide even
if the wheels are stopped.
◾Always keep the machine in gear when going down slopes. Do not coast downhill.
◾Avoid starting and stopping on slopes. Avoid making sudden changes in speed or direction. Make turns slowly and
gradually.
◾Use extra care while operating machine with a grass catcher or other attachment(s). They can affect the stability of
the machine.
HAULING
◾Use full width ramps for loading and unloading a machine for transport.
TRANSPORT
◾The machine is heavy and can cause serious crushing injuries. Be extra cautious when it is loaded on or unloaded
from a vehicle or trailer.
◾Use full width ramps for loading machine into a trailer or truck.
◾Use an approved trailer to transport the machine. Engage the electric park brake by releasing the accelerator pedal
and set the parking-brake pedal at the braking position. Fasten the machine down with approved devices such as
bands, chains or straps.
◾Both front and rear tie down straps must be used and directed down and out from the machine.

56-VOLT LITHIUM-ION ELECTRIC ZERO TURN MOWER — ZT4200S/ZT4200S-FC8
WARNING: Use extreme caution when loading the machine into a truck or trailer using ramps. There is the possibility
of serious injury or death if the machine falls off the ramps.
WARNING: The parking-brake is not sufficient to lock the machine in place during transport. Ensure that the machine
is well fastened to the transport vehicle. Always reverse the machine onto the transport vehicle to avoid tipping it over.
◾Do not operate this machine on public roadways.
◾Check and abide by local traffic regulations before transporting the machine on roads.
◾Do not tow this machine, it may cause damage to the drive system.
◾Load the unit onto truck or trailer by driving up ramps of suitable strength using a slow speed. Do not lift! The
machine is not intended to be lifted by hand.
◾When loading or unloading this machine, do not use more than the maximum recommended operation angle of 15
degrees.
TOWING
◾Do not tow a cart that exceeds 250 lbs. (113 kg) total rolling weight and never exceed 50 lbs. (22 kg) tongue
weight. The weight of the cart and other specifications are included in the owner’s manual supplied with your cart.
◾Attach towed cart only to the hitch. Risk of personal injury or property damage.
◾Never allow children or other persons in or on towed cart. Risk of personal injury.
◾Do not tow on inclines more than 5 degrees / 9%. The weight of the towed cart may cause loss of traction, loss of
control and the ability to stop when towing on inclined surface.
◾Always use extra caution when towing with your zero-turn mower. Make wide turns to avoid jack-knifing. Use
care when reversing.
◾Drive at slow speed and allow extra distance to stop.
◾Do not tow near ditches, canals, and other hazards. There is a risk of loss of traction or control.
◾Follow all the warnings and instructions provided by the cart manufacturer. Failure to follow all instructions
may result in personal injury or property damage.
◾Follow the manufacturer’s recommendation for weight limits for towed equipment and towing on slopes.
SERVICE
WARNING: Grass bag components, the side discharge cover, mulching insert are subject to wear and damage, which
could expose moving parts or allow objects to be thrown and could increase the risk of injury. For safety protection,
frequently check all components and replace damaged components immediately with identical replacement parts, listed
in this manual.
◾Keep machine in good working order. Replace worn or damaged parts. Periodic checking of the motor and brakes.
◾Use caution when servicing blades. Wrap the blade(s) or wear gloves. Replace damaged blades. Do not repair or alter
blade(s).
◾Always stop the motor and remove or disconnect the battery pack before servicing, cleaning, or removing material
from the ride-on mower.
◾After striking a foreign object, stop the motor, remove the battery pack, allow the blade to stop rotating, and
thoroughly inspect the ride-on mower for any damage. Repair the damage before operating the ride-on mower.

956-VOLT LITHIUM-ION ELECTRIC ZERO TURN MOWER — ZT4200S/ZT4200S-FC
◾Have your ride-on lawn mower serviced by a qualified repair person using only identical replacement parts. This will
ensure that the safety of the ride-on lawn mower is maintained.
◾Follow instructions for changing accessories.
◾Keep the ride-on mower free from accumulation of grease, dirt, and other possibly combustible materials.
◾Keep all nuts, bolts, and screws tight to be sure the ride-on mower is in safe working condition.
◾Never remove or tamper with safety devices. Regularly check their proper operation. Never do anything to interfere
with the intended function of a safety device or to reduce the protection provided by the safety device.
◾Maintain or replace safety and instruction labels, as necessary.
◾Recharge only with the charger specified by the manufacturer. A charger that is suitable for one type of battery pack
may create a risk of fire when used with another battery pack.
◾Do not charge ride-on mower in rain, or in wet locations.
◾Do not use battery-operated ride-on mower in rain.
◾Do not wash the ride-on mower with a hose; avoid getting water in the motor and electrical connections.
◾Store idle ride-on mower indoors – When not in use, ride-on mower should be stored in an indoor dry and locked-up
place – out of reach of children.
◾Turn off and remove key before servicing, cleaning, or removing material from the ride-on mower.
◾SAVE THESE INSTRUCTIONS. Refer to them frequently and use them to instruct others who may use this product.
If you lend this product to someone else, also lend these instructions to them to prevent misuse of the product and
possibly injury.

56-VOLT LITHIUM-ION ELECTRIC ZERO TURN MOWER — ZT4200S/ZT4200S-FC10
INTRODUCTION
Congratulations on your selection of a new generation of EGO 56V Lithium-Ion Electric Zero Turn Mower. It has been
designed, engineered, and manufactured to give you the best possible dependability and performance.
Should you experience any problem you cannot easily remedy, please contact EGO customer service center
1-877-346-9876 (1-877-EGO-ZTRM).
This manual contains important information on to the safe assembly, operation, and maintenance of your product. Read it
carefully before using the product. Keep this manual handy so you can refer to it at any time.
SERIAL NUMBER_____________________________ DATE OF PURCHASE_____________________________
THE MODEL AND SERIAL NUMBERS WILL BE FOUND ON A LABEL ATTACHED ON THE SIDE OF THE FOOT-REST AREA.
YOU SHOULD RECORD BOTH SERIAL NUMBER AND DATE OF PURCHASE AND KEEP IN A SAFE PLACE FOR FUTURE
REFERENCE. SAVE YOUR SALES RECEIPT.
SPECIFICATIONS
Voltage 56 V
Deck Size 42 in (1067 mm)
Wheel Size Front 11 x 4 – 5 in
Rear 18 x 9.5 – 8 in
Cold Tire Pressure Front 32 PSI (222.1 kPa)
Rear 16.8 PSI (115.8 kPa)
Turning Radius 0
Blade Speed (RPM) up to 3200
Maximum Driving Speed Forward up to 8 MPH (12.8 km/h)
Reverse up to 3.5 MPH (5.6 km/h)
Cutting-Height Adjustment (10 positions) 1.5 – 4.5 in (38.1 – 114.3 mm)
Maximum Towing Weight 250 lbs (113 kg)
Recommended Charging Temperature 41°F – 104°F (5°C – 40°C)
Recommended Operating Temperature 32°F – 104°F (0°C – 40°C)
Recommended Storage Temperature -4°F – 158°F (-20°C – 70°C)
Weight (without battery pack) 430 lbs (195 kg)

1156-VOLT LITHIUM-ION ELECTRIC ZERO TURN MOWER — ZT4200S/ZT4200S-FC
RECOMMENDED ACCESSORIES
WARNING: Use only identical replacement parts listed below. Use of parts that do not meet the original equipment
specifications may lead to improper performance and compromised safety.
PART NAME MODEL NUMBER
Blade Set AB4200D
Bagging Blade Set AB4201D
Mulching Plug AMP4200
Bagger Kit ABK4200
Rear Bumper AMB1000
Cargo Box AMG1000
Sun Shade AMS1000

56-VOLT LITHIUM-ION ELECTRIC ZERO TURN MOWER — ZT4200S/ZT4200S-FC12
DESCRIPTION
KNOW YOUR ELECTRIC ZERO TURN MOWER (Fig. 1)
1Seat Position
Adjustment Lever
Right Side Box
(Fig. 1a)
Streering Wheel
(Fig. 1b)
Seat-Suspension
Adjustment Knob
Deck-Height Adjustment Lever
Side Discharge Chute
Foot-Test Area
Accelerator Pedal
Front Wheel (x2)
Parking-Brake Pedal
Anti-Scalp Wheel (x2)
Deck Protector (x2)
Rear Wheel (Drive Wheel) (x2)
LED Sidelight (x2)
Storage Compartment (Fig. 1c)
LED Rear Light (x2)
Power Unit (Fig. 1c)
Charging Port
Seat
Deck
Wash
Port
LED Headlights
Daytime Running Lights
1a
PTO Switch
Start/Stop
Button
Phone Storage Slot
Safety Key
1b
Right Paddle
LCD Screen
Mower Status
Indicator
Left Paddle
CCS Button
LED Light Switch
Driving Mode
Button
Blade Speed
Adjustment
Button
Driving Speed
Adjustment
Button
Cup Holders

1356-VOLT LITHIUM-ION ELECTRIC ZERO TURN MOWER — ZT4200S/ZT4200S-FC
1c
Power-Unit Cover Release Button
Attachment Mounting Cover (x2)
USB Port
Power-unit Cover
Power unit with six battery
compartments
Battery-Release Button
Hitch

56-VOLT LITHIUM-ION ELECTRIC ZERO TURN MOWER — ZT4200S/ZT4200S-FC14
WARNING: The safe use of this product requires an understanding of the information on the product and in this
instruction manual, as well as knowledge of the project you are attempting. Before use of this product, familiarize yourself
with all operating features and safety rules.
Safety Key
The safety key must be inserted before the start/stop button is pressed to start the mower.
Start/Stop Button
After the safety key is inserted, press the start/stop button for 3 seconds to start the mower.
◾The LCD screen will display the “fuel gauge” when pressed briefly.
◾The LCD screen will turn off after the start/stop button has been pressed again for 3 seconds.
PTO Switch (Pull-to-Operate Switch)
Turns on the blades (blade motors).
NOTICE: It is not recommended to turn on the blade motors when the blades are under heavy load. Raise
the deck and restart the blade motors.
Steering Wheel
Controls the mower’s driving direction.
Left Paddle/Right Paddle
The paddles have two functions:
◾Before driving the mower, pull both left paddle and right paddle simultaneously towards the operator and then
release them, the mower status indicator will shine green, which means the mower is ready for driving.
◾When the mower is ready for driving or is already being driven at any speed, pull either left or right paddle, or both
paddles towards the operator and do not release them to drive the mower in reverse.
Accelerator Pedal
Starts/Stops driving the mower and controls the driving speed of the mower.
Parking-Brake Pedal
Locks the mower in the parking position.
NOTICE: Never depress the parking-brake pedal to slow down the speed. Once the parking-brake pedal is depressed
enough but not to the full parking position, the mower will stop moving. On a flat surface but if this happens on a slope,
the mower may slide down the slope.
Seat Position Adjustment Lever
Use this lever to move the high-cushion seat back and forth to the desired position.
Seat-Suspension Adjustment Knob
Use the seat-suspension adjustment knob to adjust the comfort depending on the operator’s weight and the bumpiness of
the yard.
PTO
ONOFF

1556-VOLT LITHIUM-ION ELECTRIC ZERO TURN MOWER — ZT4200S/ZT4200S-FC
Deck-Height Adjustment Lever
The deck-height adjustment lever raises and lowers the cutting deck.
Anti-Scalp Wheel
Prevents the deck from contacting the ground and scalping the lawn when passing over a high spot.
Side-Discharge Chute
Allows the blade to discharge the grass clippings from the side discharge opening. The side-discharge chute is factory
installed.
Hitch
For towing carts or other wheeled attachments. Refer to “TOWING” chapter earlier in this manual.
Daytime Running Lights
Light up to show cool effects. Could be customized using EGO Power+ app.
LED Headlights/Sidelights/Rear Lights
Provide light for mowing in low light conditions and to allow the mower to be seen.
NOTE: During reverse operation, the rear lights will automatically flash as an alert.
LED Light Switch
Controls the headlights/sidelights/rear lights.
Storage Compartment
The storage compartment features one USB port and ample storage space for a USB device being charged and/or for
accessories, such as the attachment-mounting covers. Always close the storage compartment cover when not in use to
prevent debris from becoming trapped in the USB port.
Phone Storage Slot
Designed for convenient storage of a mobile phone.
Attachment Mounting Covers
Protect the attachment-mounting sites when they are not in use.
Charging Port
When used with CHV1600/CHV1600-FC charger (available separately), allows the direct charging of the batteries
mounted in the battery compartment.
USB Port
The USB port provides charging power of 5 Volts DC at up a combined draw of 1.5 Amperes for your cell phone, MP3
player, or other USB devices. Consult the owner’s manual for your device for specific charging requirements.
NOTICE:
◾Attempting to charge devices whose combined draw exceeds 1.5 amps could damage the USB port and/or the
mower.
◾The USB port is powered only when the mower is not in charging mode.

56-VOLT LITHIUM-ION ELECTRIC ZERO TURN MOWER — ZT4200S/ZT4200S-FC16
SMART FEATURES
Driving-Mode Button
This button allows the operator to activate one of the three modes: CONTROL, STANDARD, or SPORT. The modes
determine the sensitivity of the mower reaction to the accelerator pedal and steering wheel movement. For more
information refer to section “CUSTOMIZING YOUR MOWING AND DRIVING EXPERIENCE”.
Driving Speed Adjustment Button
Allows the operator to select a comfortable driving speed. For more information refer to section “CUSTOMIZING YOUR
MOWING AND DRIVING EXPERIENCE”.
Blade-Speed Adjustment Button
Allows the user to customize the blade speed, depending on grass conditions. For more information refer to section
“CUSTOMIZING YOUR MOWING AND DRIVING EXPERIENCE”.
CCS Button
Has multiple functions:
◾To enter and exit CCS (Cruise Control System) while driving forward.
◾To calibrate the steering wheel (see section “CALIBRATE THE STEERING WHEEL” in this manual).
◾To reset the mower to initial factory setting (see section “RESETTING THE MOWER TO INITIAL FACTORY SETTING”
in this manual).
Mower Status Indicator
◾If the mower status indicator shows green, the mower is ready to be driven.
◾If the status indicator flashes red during driving, the mower is overloaded, or otherwise in an undesirable condition.
◾If the mower status indicator is off, the mower is not ready to be driven. Please see the section “STARTING THE
ELECTRIC ZERO TURN MOWER” in this manual to start the mower correctly.
◾If the mower status indicator flashes red (and the icon of each occupied battery compartment, fuel gauge, and low-
power indicator will blink every second), the battery charge is too low and the mower will go into Limp-Home mode.
◾When updating the firmware or resetting the mower to initial factory setting, the mower status indicator flashes
orange. Please see the sections “TO UPDATE THE FIRMWARE” and “RESETTNG THE MOWER TO INITIAL FACTORY
SETTTING”.
NOTE: The mower status indicator may indicate a particular fault, refer to the section “FAULT CODE & MOWER STATUS
INDICATOR REFERENCE” for more information.
PEAK POWER™
This technology combines the power of up to six EGO 56V ARC Lithium™ batteries to deliver the power and performance
of a gas mower.

1756-VOLT LITHIUM-ION ELECTRIC ZERO TURN MOWER — ZT4200S/ZT4200S-FC
EGO Power+ App and Firmware
Unlike the gas-powered mowers, your EGO zero-turn mower uses a state-of-the-art on-board computer to monitor every
element of the machine and make sure that the mower is running smoothly. EGO engineers periodically release updates
to mower’s Firmware – an operating system running the on-board computer. In a lot of cases the performance of a
certain element of the mower can be improved by changing the code in the firmware without replacing the physical parts
or having to visit a service station. For information on how to pair your zero-turn mower with your smartphone or tablet,
please refer to chapter “USING EGO POWER+ APP WITH YOUR MOWER”.
Slope Assist
This feature helps the operator to safely start and drive the mower on a slope.
Limp-Home Mode
When battery charge becomes critically low, the mower will go into Limp-Home mode to preserve enough power to travel
back to the charging area.
◾The blades switch into low rotation speed, which could only cut very little amount of grass. Upon encountering tall
and dense grass, the blades will stop rotating. The audio indicator will sound (beep) intermittently.
◾The mower status indicator will flash red every second, both the low-power indicator and the battery graphics on the
fuel gauge will flash.
The operator should:
◾Push the PTO switch downward to turn off the blade motors. The audio indicator will stop sounding when the blade
motors stop
◾Stop working and get to the charging area as soon as possible. The maximum distance the mower can travel is 0.6
mile (0.96 km).
When the battery is nearly depleted, the icon of each occupied battery compartment and low-power indicator will blink
every half a second. The mower will stop working immediately. The operator will have to transport the mower to the
charging area for charging.
NOTICE: If manual pushing is needed, be sure that the batteries are disconnected from the mower and the parking-brake
pedal is released from the braking position.
Safety Start Interlock System
The mower is equipped with a safety start interlock system consisting of the safety key, start/stop button, the parking-
brake pedal switch, seat switch, and charging-port switch.
The safety start interlock system is designed to protect the operator and others from accidental injury due to unintentional
mower starting.
WARNING: Check the mower safety start interlock system prior to operation. This system is an important mower
safety feature. It should be repaired immediately if it malfunctions: call EGO customer service center immediately.
WARNING: The safety start interlock system must not be disconnected or bypassed. Doing so could cause the mower
to operate unexpectedly, resulting in personal injury.
Audio Indicator (Beeps)
The EGO electric zero turn mower is equipped with an audio indicator that will beep in certain situations. It will sound
when:

56-VOLT LITHIUM-ION ELECTRIC ZERO TURN MOWER — ZT4200S/ZT4200S-FC18
◾The mower starts normally and the LED screen is illuminated with all icons and indicators. The audio indicator will
sound once.
◾The mower is turned off normally. The beep will sound once.
◾When the available battery charge is critically low, the mower will go into Limp-Home mode, the beeps will continue
to sound intermittently until the PTO switch is pressed downward.
◾When the mower is overloaded or overheated, the beep will sound once.
◾When one fault code is displayed on the LCD screen, the beep will sound once. When several fault codes are
displayed on the LCD screen, the beep will sound the number times corresponding to the number of fault codes.
◾If the mower stops driving on a slope and the operator is off the seat without setting the parking-brake pedal at the
braking position, the beeps will sound continuously to remind the operator to set the parking brake for safety.
◾When entering or exiting the CCS (Cruise Control System), the beep will sound twice.

1956-VOLT LITHIUM-ION ELECTRIC ZERO TURN MOWER — ZT4200S/ZT4200S-FC
KNOW THE ICONS AND INDICATORS ON THE LCD SCREEN (Fig.2)
MODE
2
Blade Speed IndicatorDriving Speed Indicator
Low-Power Indicator
Fuel Gauge
Overload Indicator
USB IconLED Lights
Icon
Bluetooth
Icon
CCS
Icon
Reverse
Icon
Load Indicator
Fault Code
Indicator Hour MeterDriving Mode
Vacant Battery
Compartment Icon
Safety Device
Status Indicator
Temperature Icon
Auto-Parking
Icon
Safety Key
Icon
Occupied Battery
Compartment Icon
Reverse Icon
Illuminates when either left or right, or both paddles are pulled towards the operator for driving in reverse.
CCS (Cruise Control System) Icon
Illuminates when the mower continues forward at a set speed without needing to step on the accelerator pedal.
Bluetooth Icon
Illuminates when the mower is connected to a mobile device via Bluetooth.
The Bluetooth®word mark and logos are registered trademarks owned by Bluetooth SIG, inc. and any use of such marks
by EGO is under license.
Safety Key Icon
When the safety key is correctly inserted and the start/stop button is pressed to start the mower, the safety key icon will
illuminate, otherwise this icon will keep flashing as a reminder for the operator to insert the safety key.

56-VOLT LITHIUM-ION ELECTRIC ZERO TURN MOWER — ZT4200S/ZT4200S-FC20
LED Lights Icon
Illuminates when the LED headlights/sidelights/rear lights have been turned on.
Auto-Parking Icon
The auto-parking icon will flash when the mower stops driving on a slope, the accelerator pedal is released, and the
operator is off the seat without setting the parking-brake pedal at the braking position. The mower will automatically stop
on the slope using the battery charge to power the electric brake, meanwhile the audio indicator will emit intermittent
beeps.
The auto-parking icon will turn off and the audio indicator will no longer sound as soon as the parking-brake pedal is set
in braking position.
WARNING: When the battery power is depleted, the mower can slide down the slope, which may cause
serious mower damage or personal injury!
USB Icon
Illuminates to indicate that a USB device can be connected after the mower is started correctly.
Load Indicator
Indicates the current load of the mower. When the load is in the ECO range, the mower is under normal load. When
the load is in the PWR range, the mower is under heavy load. When in the CHG range, the mower is in the energy
regeneration mode, such as when braking or driving downhill.
Fuel Gauge
Indicates the average charge capacity of the inserted batteries.
Low-Power Indicator
◾When the available battery charge is critically low, the mower will go into Limp-Home mode. The low-power indicator
will flash every second. The operator should stop working and drive to the battery charging area as soon as possible.
◾When the battery is nearly depleted, the low-power indicator will flash every half a second.
Fault Code Indicator
The on-board computer system will take action to protect the operator and the machine when it detects an issue. When
it acts to turn off the machine or a component, it will indicate that a fault has occurred, and that fault code will be shown
on the LCD screen. Please see “FAULT CODE & MOWER STATUS INDICATOR REFERENCE” section in this manual for
reference.
Overload Indicator
When the mower is overloaded, the overload indicator will flash every second. Meanwhile, the mower status indicator
above the LCD screen will flash RED every second. The audio indicator will sound once.
It is recommended that the operator should raise the deck cutting height to reduce the load of the mower when the
overload indicator flashes.