550CX - Lawn mower Baumr-AG - Free user manual and instructions

Product Type	Electric Battery-Powered Lawn Mower
Model	550CX
Cutting Width	380 mm (15 inches)
Cutting Height	25 - 75 mm (6 positions)
Motor Power	550 W brushless motor
Grass Catcher Volume	40 L
Battery Compatibility	One or two compatible battery packs (sold separately)
Running Time (no-load)	Approx. 120 min with 2 x 4 Ah batteries
Charging Time	2 hours per battery pack
Front Wheel Size	7 inches
Rear Wheel Size	10 inches
Deck Material	Steel
Height Adjustment	Single lever, 6 positions
Foldable Handle	Yes, for compact storage
Safety Features	Safety key, dead man's grip, blade brake, grass collector indicator
Additional Functions	Mulching (with plug), side discharge (with side chute)
Weight	Approx. 18 kg (estimated)
Recommended Grass Area	Up to 325 m² with one 2.5 Ah battery; up to 650 m² with two
Storage Temperature	-20°C to +40°C
Warranty	Refer to manufacturer's warranty policy

Frequently Asked Questions - 550CX Baumr-AG

How do I start the lawn mower?

Insert the safety key into the key lock under the battery cover. Press and hold the safety switch, then pull the dead man's grip upward while holding the handle. Release the safety switch. The engine will start.

What should I do if the mower does not start?

Check that the safety key is properly inserted and the battery pack is charged and correctly installed. Ensure the blade is not blocked by debris. Follow the correct start procedure: press safety switch, then pull dead man's grip. If problem persists, consult troubleshooting in the manual.

How do I adjust the cutting height?

The mower has six cutting heights from 25 mm to 75 mm. Lift the height adjustment lever out of its current position and move it forward or backward to the desired height. Ensure the lever locks into the new position. Always adjust with the blade stopped.

Can I use the mower on wet grass?

No, do not use the mower if it is raining or if the grass is wet. Wet conditions increase the risk of electric shock, short circuit, and poor cutting results.

How do I charge the battery?

Use only the charger supplied by the manufacturer. Charge the battery in a dry area between 10°C and 30°C. The first charge takes 2 hours; subsequent charges also take about 2 hours. Disconnect the charger once fully charged.

Why does the mower stop during operation?

The battery may be depleted, or the battery overload protection may have tripped. Allow the battery to cool, raise the cutting height, and reduce walking speed. If the battery is empty, recharge it.

How do I replace the blade?

Remove the battery pack and safety key. Tilt the mower on its side with the height adjustment lever facing up. Loosen the blade bolt (counterclockwise) and remove the blade, washer, and bolt. Install a new or sharpened blade, ensuring the guide pins align. Tighten the bolt securely.

What maintenance is required after each use?

Charge the battery. Clean grass clippings from the collector, deck, and wheels. Use a brush or compressed air to remove debris. Check the blade sharpness and tighten any loose parts. Store the mower in a dry place.

How should I store the mower for long periods?

Remove the battery pack and safety key. Clean the mower thoroughly. Fold the handle down for compact storage. Store in a dry room at -20°C to +40°C, away from chemicals and fertilizers. Fully charge the battery before storage.

What is the typical battery life?

Lithium-ion batteries typically last 2 to 3 years or 300 to 500 charge cycles, whichever comes first. One cycle equals a full charge and discharge. To maximize life, avoid storing the battery depleted and charge it in the recommended temperature range.

USER MANUAL 550CX Baumr-AG

User Manual

[Revision 7.0 June 2023]

THE BATTERY MAY HAVE SOME CHARGE ON ARRIVAL, IT IS IMPORTANT HOWEVER THAT THE BATTERY IS CHARGED PRIOR TO USE.

Safety

Safety messages are designed to alert you to possible dangers or hazards that could cause death, injury or equipment or property damage if not understood or followed. Safety messages have the following symbols:

You WILL be KILLED or SERIOUSLY INJURED if you do not follow instructions.

It is vital that you read and understand this user manual before using the product, including safety warnings, and any assembly and operating instructions. Keep the manual for future reference.

Safety precautions and recommendations detailed here must be fully understood and followed to reduce the risk of injury, fire, explosion, electrical hazard, and/or property damage.

Safety information presented here is generic in nature – some advice may not be applicable to every product. The term "equipment" refers to the product, be it electrical mains powered, battery powered or combustion engine powered.

• Before Use - If you are not familiar with the safe operation/handling of the equipment or are in any way unsure of any aspect of suitability or correct use for your application, you should complete training conducted by a person or organization qualified in safe use and operation of this equipment, including fuel/electrical handling and safety.
• Do NOT operate the equipment in flammable or explosive environments, such as in the presence of flammable liquids, gases, or dust. The equipment may create sparks or heat that may ignite flammable substances.
• Keep clear of moving parts.
• Equipment may be a potential source of electric shock or injury if misused.
• Do NOT operate the equipment if it is damaged, malfunctioning or is in an excessively worn state.
• Do NOT allow others to use the equipment unless they have read this manual and are adequately trained.
• Keep packaging away from children - risk of suffocation! Operators must use the equipment correctly. When using the equipment, consider conditions and pay due care to persons and property.

General Work Area Safety

• Work areas should be clean and well it.
- Do not operate the equipment if bystanders, animals etc are within operating range of the equipment or the general work area.
- If devices are provided for connecting dust extraction / collection facilities, ensure these are connected and used properly. Dust collection can reduce dust-related hazards.

You CAN be KILLED or SERIOUSLY INJURED if you do not follow instructions.

General Personal Safety

• Wear appropriate protective equipment when operating, servicing, or when in the operating area of the equipment to help protect from eye and ear injury, poisoning, burns, cutting and crush injuries. Protective equipment such as safety goggles, respirators, non-slip safety footwear, hard hat, hearing protection etc should be used for appropriate equipment / conditions. Other people nearby should also wear appropriate personal protective equipment. Do not wear loose clothing or jewellery, which can be caught in moving parts. Keep hair and clothing away from the equipment.
• Stay alert and use common sense when operating the equipment. Do not overreach. Always maintain secure footing and balance.
• Do not use the equipment if tired or under the influence of drugs, alcohol, or medication.
• This equipment is not intended for use by persons with reduced physical, sensory, or mental capabilities.

General Fuel Safety

• Petrol/fuel/gasoline is extremely flammable – keep clear of naked flames or other ignition sources.
• Do not spill fuel. If you spill fuel, wipe it off the equipment immediately – if fuel gets on your clothing, change clothing.
• Do NOT smoke near fuel or when refuelling.
  • Always shut off the engine before refuelling.
• Do NOT refuel a hot engine.
• Open the fuel cap carefully to allow any pressure build-up in the tank to release slowly.
  • Always refuel in well ventilated areas.
• Always check for fuel leakage. If fuel leakage is found, do not start, or run the engine until all leaks are fixed.

General Carbon-Monoxide Safety

• Using a combustion engine indoors CAN KILL IN MINUTES. Engine exhaust contains carbon-monoxide – a poison you cannot smell or see.
• Use combustion engines OUTSIDE only, and far away from windows, doors, and vents.

You CAN be INJURED if you do not follow instructions or equipment damage may occur.

General Equipment Use and Care

• The equipment is designed for domestic use only.
• Handle the equipment safely and carefully.
• Before use, inspect the equipment for misalignment or binding of moving parts, loose components, damage, or any other condition that may affect its operation. If damaged, have the equipment repaired by an authorised service centre or technician before use.
• Prevent unintentional starting of the equipment - ensure equipment and power switches are in the OFF position before connecting or moving equipment. Do not carry equipment with hands or fingers touching any controls. Remove any tools or other items that are not a part of the equipment from it before starting or switching on.
• Do not force the equipment. Use the correct equipment for your application. Equipment will perform better and be safer when used within its design and usage parameters.
• Use the equipment and accessories etc. in accordance with these instructions, considering working conditions and the work to be performed. Using the equipment for operations different from those intended could result in hazardous situations.
• Always keep equipment components (engines, hoses, handles, controls, frames, housings, guards etc) and accessories (cutting tools, nozzles, bits etc) properly maintained. Keep the equipment clean and, where applicable, properly lubricated.
• Store the equipment out of reach of children or untrained persons. To avoid burns or fire hazards, let the equipment cool completely before transporting or storing. Never place or store the equipment near flammable materials, combustible gases, or liquids etc.
• The equipment is not weather-proof, and should not be stored in direct sunlight, at high ambient temperatures or locations that are damp or humid.
• Do not clean equipment with solvents, flammable liquids, or harsh abrasives.
• For specific equipment safety use and care, see Equipment Safety.

General Electrical Safety

• Inspect electrical equipment, extension cords, power bars, and electrical fittings for damage or wear before each use. Repair or replace damaged equipment immediately.
• Ensure all power sources conform to equipment voltage requirements and are disconnected before connecting or disconnecting equipment.
• When wiring electrically powered equipment, follow all electrical and safety codes.
• Wherever possible, use a residual current device (RCD).
• High voltage / high current power lines may be present. Use extreme caution to avoid contact or interference with power lines. Electrical shock can be fatal.

General Electrical Safety

• Electrically grounded equipment must have an approved cord and plug and be connected to a grounded electrical outlet.
• Do NOT bypass the ON/OFF switch and operate equipment by connecting and disconnecting the electrical cord.
• Do NOT use equipment that has exposed wiring, damaged switches, covers or guards.
• Do NOT use electrical equipment in wet conditions or in damp locations.
• Do NOT use electrical cords to lift, move or carry equipment.
• Do NOT coil or knot electrical cords, and ensure electrical cords are not trip hazards.

General Service Information

• The equipment must be serviced or repaired at authorised service centres by qualified personnel only.
• Replacement parts must be original equipment manufacturer (OEM) to ensure equipment safety is maintained.
• Do NOT attempt any maintenance or repair work not described in this manual.
• After use, the equipment and components may still be hot – allow the equipment to cool and disconnect spark plugs and/or electrical power sources and/or batteries from it before adjusting, changing accessories, or performing repair or maintenance.
• Do NOT adjust while the equipment is running.
• Perform service-related activities in suitable conditions, such as a workshop.
• Replace worn, damaged or missing warning/safety labels immediately.

VIBRATION WARNINGS

• CAUTION! The specified sound level values are emission values and do not indicate safe working environment values. Although there is a link between emission and noise levels, the ratio is not reliable as an indicator of whether additional safety measures are necessary or not. Factors that are specific to a workplace can affect the noise level, such as the length of the activity, the characteristics of the workplace, other sound sources, etc., such as the number of machines and other related activities. This information should nevertheless provide a better estimate of possible hazards and risks.
  • Measurement method: EN 60335-2-77
• Handle vibrations: ≤ 2.5 m/s2
  • Uncertainty K: 1.5m/s2
• Declared vibration level has been measured in accordance with a standardized measurement method and can be used for comparison between different machines. The total value can be used in a preliminary assessment of the exposure.
• CAUTION! The vibration value during actual use may differ from the declared total value, depending on how the machine is used. The need to identify your safety measures to protect the operator is based on an estimate of the exposure under actual working conditions with regard to the time when the machine is operating or switched off.

AREA OF USE

• The electric lawn mower is brushless and battery-powered, intended for one or two parallel-connected battery packs. It is designed for regular mowing of small, medium, and even grass surfaces. It is equipped with a steel deck, collector, and protective devices such as key locks and dead man's grips.
• The electric lawn mower may only be used together with battery packs and battery chargers from the supplier.
• The lawnmower must not be rebuilt, must be used for work other than that for which it is designed. It is not intended for professional use.

SAFETY INSTRUCTIONS FOR ELECTRIC LAWN MOWERS

• WARNING Read all safety instructions, instructions, illustrations, and specifications provided with this power tool. Failure to follow all instructions below may result in electric shock, fire and / or serious injury.
• Save all safety instructions and instructions for future reference.
• The term "power tools" in the safety regulations refers to your / your mains-powered / battery-powered hand-held and transportable power tools or garden machine.
• Keep the workplace clean and well lit. Messy or dark workplaces invite accidents.
• Never use power tools in an explosive environment, such as near flammable liquids, gases, or dust. Power tools can create sparks that can ignite dust and fumes.
• Keep children and spectators at a distance when using power tools. Disorders and lack of concentration can cause you to lose control.

PERSONAL SAFETY

• Pay attention, concentrate on what you are doing and use common sense when working with a power tool. Do not use the power tool when you are tired or under the influence of drugs, alcohol, or medication. One moment of inattention when using power tools can result in serious personal injury.
• Use personal protective equipment. Always wear safety goggles. Protective equipment such as a dust mask, non-slip safety shoes, helmet or hearing protection used in certain circumstances reduces the risk of personal injury.

• Prevent accidental start. Make sure that the switch is in the OFF position before connecting the plug to the power source and / or the battery pack, when lifting or when carrying the power tool. Carrying a power tool with the finger on the switch or supplying the power tool with power when the switch is in the ON position invites an accident.

• Remove all adjustment wrenches or wrenches before starting the power tool. A wrench or adjustment wrench left on a rotating part of the power tool can cause personal injury.

• Do not stretch too far. Stand firm and keep your balance at all times. This makes it possible to have better control over the power tool in unexpected situations.
• Dress properly. Never wear loose clothing or jewellery. Keep hair and clothing away from moving parts. Loose clothing, jewellery or long hair can get caught in moving parts.
• If the equipment is equipped with a vacuum cleaner connection and collection equipment, make sure that these are connected and used correctly. The use of dust collectors can reduce the risk of dust hazards.
• Do not let experience from frequent use of power tools make you confident and ignore safety rules. Careless action can, in an instant, cause serious injury.

USE AND MAINTENANCE OF POWER TOOLS

• Do not overload and force the power tool. Use the correct power tool for the work to be performed. The right power tool performs the job better and safer if it is used at the speed for which it is manufactured.
• Do not use the power tool unless the power switch turns on and off. All power tools that cannot be regulated by the switch are dangerous and must be repaired.
• Disconnect the plug from the power source and / or remove the battery pack, if detachable, from the power tool before adjustments, replacement of tools / accessories or storage of the power tool. Such preventive safety measures reduce the risk of unintentional starting of the power tool.
• Do not store power tools that are not used outside of access by children and do not allow persons who do not have in-depth knowledge of this power tool or these instructions to use the power tool. Power tools are dangerous in the hands of inexperienced users.
• Maintenance of power tools and their tools / accessories. Check for incorrect direction of rotation or movement and attachment of moving parts, damaged parts or other circumstances that affect the function of the power tool. In case of damage / fault, repair the power tool before use. Many accidents are caused by poorly maintained power tools.
• Use the power tool, accessories, and tool bits, etc. in accordance with these instructions, taking into account the working conditions and the work to be performed. Use of power tools for work other than intended can result in a dangerous situation.
• Keep handles and grip surfaces dry, clean, and free of oil and grease. It is not possible to handle and control the power tool safely in unexpected situations if the handles and gripping surfaces are slippery.

BATTERY-POWERED POWER TOOLS USE AND CARE

• Charge the battery pack only with the battery charger specified by the manufacturer. A charger suitable for one type of battery pack may cause a fire hazard when used with another type of battery pack.
• Use only power tools with specially designed battery packs. Use of other battery packs may cause injury and fire.
• When not using battery packs, keep them away from other metal objects such as paper clips, coins, keys, nails, screws, or other small metal objects. Short-circuiting the battery contacts can cause burns and fire.
• In the wrong conditions, liquid can leak from the battery pack; avoid contact. If accidental contact occurs, rinse with water. In case of contact with eyes, seek medical advice. Liquid leaking from the battery pack can cause irritation and burns.
• Never use battery packs or tools that are damaged or modified. Damaged or modified battery packs may exhibit unexpected behaviours that result in fire, explosion, or injury.
• Do not expose battery packs or tools to excessively high temperatures. Exposure to a temperature above 130^ can cause an explosion.
• Follow all charging instructions and never charge the battery pack outside the temperature range specified in the operating instructions. Improper charging or charging outside the specified temperature range can damage the battery pack and increase the risk of fire.

SERVICE

• Have your power tool serviced by a qualified technician who only uses identical spare parts. This ensures that the safety of your power tool is maintained.
• Never repair damaged battery packs. Repair of the battery pack may only be carried out by the manufacturer or authorized service workshops.

OTHER SAFETY INSTRUCTIONS WITH A LAWN MOWER

• This power tool is not intended for use by persons (including children) with impaired physical, sensory, or mental abilities, or lack of experience and knowledge, provided that they have not been instructed and instructed in the use of the power tool by a person responsible for their safety.
• Children should be supervised to ensure that they do not play with the power tool.
• Do not use the mower if it is raining or if the grass is wet. Risk of short circuit.
• Do not stretch over the cutting area to maintain a good balance at all times. Stand firmly on slopes and walk - never run. Risk of the operator falling and losing control of the mower.
• Never lift or put any hand under the mower until the battery pack has been removed from the mower and until the moving parts have completely stopped. Risk of injury from accidental contact with the rotating blade.
  • Always wear non-slip and sturdy shoes and trousers when using the mower. Risk of the operator slipping and losing control of the mower.
• Remove the battery pack from the mower:
• When left unattended.
• Before inspection, cleaning, maintenance, and repair of machine.
• For inspection after foreign objects have been hit by the knife.
• If the machine starts to vibrate abnormally, inspect, and correct the cause immediately.
• For transport and storage.

• Never use the mower if any protection or protective device is broken or missing.

• Immediately release the dead man's handle and remove the battery pack in the event of an accident or operational problem. In case of operational problems, inspect and rectify the cause.

• Keep all parts of your body away from the blade, the area under the mower and inside the draft hatch. Never remove cut material as the blade moves. Make sure that the battery pack is disassembled when removing material that is stuck in the draft. One moment of inattention when using a lawn mower can cause serious personal injury.
• Inspect the cutting area before starting to cut. Remove foreign objects such as stones, cones, electrical cables, ropes, and the like. Foreign objects hit by the knife blade can fly away, become entangled or otherwise cause damage.

REMAINING HAZARDS WHEN USING A LAWN MOWER

• Despite the fact that the power tool has been manufactured in accordance with current design principles regarding dimensions, protection and complementary protection measures, the following risks remain for:
• Cutting damage. In case of accidental touch of the rotating blade.
• Eye damage. If not approved eye protection is used.
• Hearing damage. If not approved hearing protection is used.
• WARNING! READ AND FOLLOW ALL INSTRUCTIONS IN THE OPERATING INSTRUCTIONS BEFORE USING THE MACHINE. RISK OF PERSONAL INJURY OR PROPERTY DAMAGE.
• WEAR HEARING PROTECTION AND GOGGLES! RISK OF HEARING AND EYE DAMAGE DUE TO HIGH NOISE LEVEL AND FLYING OBJECTS.
• HIGH NOISE LEVEL, USE HEARING PROTECTION. PROLONGED EXPOSURE MAY CAUSE HEARING DAMAGE.
• WARNING! FLYING OBJECTS. KEEP PEOPLE AND PETS AT A SAFE DISTANCE FROM THE WORK AREA. RISK THAT FLYING OBJECTS MAY HIT YOU, SPECTATORS, PETS OR PROPERTY.
• WARNING! THE KNIFE BLADE ROTATES FOR A WHILE AFTER THE ENGINE HAS BEEN SWITCHED OFF. WAIT UNTIL THE BLADE COMPLETELY STOPS ROTATING BEFORE LIFTING OR TIPPING THE LAWN ON THE SIDE.
• WARNING! BEWARE OF THE SHARP KNIFE BLADE. NEVER PUT ANY HAND OR FOOT UNDER THE MOWER. THE KNIFE BLADE CONTINUES TO ROTATE AFTER THE ENGINE IS SWITCHED OFF - REMOVE THE KEY BEFORE REPAIR AND MAINTENANCE.
• DO NOT use the lawnmower if it is raining or expose it to moisture. Risk of short circuit and machine damage.

Safety Symbols

The product may have safety warning labels attached to it, explained below. Understand the symbols on your product and their meanings. If any stickers become unreadable, unattached etc., replace them.

Flammable Material HazardFlammable liquids, gases, or substances etc may present.Avoid ignition sources and open flames. Danger of fire.	Read User ManualRead and fully understand product safety warnings, operation, procedures etc before using the product.	Use Hand ProtectionWear appropriate hand protection and take due care as the product or use of the product may present hand hazards.	EXHAUST FUMESCarbon-Monoxide HazardDo not use the product in confined areas or without adequate ventilation. Carbon-monoxide poisoning can be fatal.
Electrocution / Electrical Shock HazardHigh voltage or high current electricity may be present or required by the product. Take due care when handling electrical products, cables, plugs and leads. Electrical shock can be fatal.	Toxic Fumes / Dust HazardUsing the product or by-products from use may produce fumes, smoke or particles that could be harmful if inhaled. Wear appropriate breathing protection and have adequate ventilation.	Explosive Material HazardCombustible liquids, gases, or substances etc may be present.Avoid ignition sources and open flames. Danger of explosion.	Cutting / Amputation HazardThe product may have blades, edges or mechanical devices that can cause severe cut injury to fingers, limbs etc. Take due care when handling and using the product.
Crush HazardThe product may have blades, edges or mechanical devices that can cause severe crush injury to fingers, limbs etc. Take due care when handling and using the product.	Single Operator OnlyThe product must be operated by a single person only. More than one person operating the product may introduce additional hazards.	Use Face ProtectionWear appropriate full-face protection and take due care as the product or use of the product may present face and eye hazards.	Use Foot ProtectionWear appropriate foot protection and take due care as the product or use of the product may present foot hazards.
Use Eye / Ear / Head ProtectionWear appropriate eye and / or ear and / or head protection and take due care as the product or use of the product may present eye, hearing, and head hazards.	Running HazardDo not run on or near the product as doing so may present a fall hazard.	Diving HazardDo not dive into the product as doing so may present a neck / head injury hazard.	Adult Supervision RequiredAlways supervise children and other users of a product to prevent drowning or injury.
Skin Penetration / Puncture HazardThe product may produce pressure, emit liquids or objects that can cause severe injury to fingers, limbs, blood etc. Take due care when handling and using the product.	Hot Surface HazardBe aware that the product may produce high temperatures and hot surfaces that can cause burn injuries.	Flying Debris HazardBe aware that the product or use of the product may present hazards produced by flying debris. Wear appropriate clothing and protective devices.	Moving Parts HazardBe aware that the product contains or uses mechanical devices that move or rotate. Always wait for moving parts to stop fully before handling the product, adjusting, maintenance etc.
Carbon-Monoxide HazardDo not use the product in confined areas or without adequate ventilation. Carbon-monoxide poisoning can be fatal.	Pull HazardBe aware that the product contains or uses mechanical devices that can pull in objects and can cause severe injury to fingers, limbs etc. Take due care when handling and using the product.	Slope / Fall Injury HazardBe aware that using the product on sloping surfaces or in slippery conditions may present additional dangers from falls and contact with blades, moving parts, hot surfaces etc.	"Slam Dunk" WarningDo NOT attempt "slam dunk" manoeuvres as this may result in severe injury due to falling, product breakage or collapse etc.
Electrocution / Electrical Shock Hazard - OutdoorHigh voltage or high current electricity may be present or required by the product. Do NOT use in rain, damp, or wet conditions. Electrical shock can be fatal.	Electrocution / Electrical Shock Hazard - DisconnectHigh voltage or high current electricity may be present or required by the product. Always disconnect the product from the electrical supply before handling the product, adjusting, maintenance etc.	Power Line Electrocution HazardHigh voltage / high current power lines may be present. Use extreme caution to avoid contact or interference with power lines. Electrical shock can be fatal.	"Kick-Back" HazardHigh level of "kick-back" hazard that can cause the machine to suddenly rotate towards operator. Kick-back injury can be fatal.
Winch Operator Position HazardDo NOT stand between winch and load. Do NOT use winch to move people.	Winch Lift HazardDo NOT LIFT load vertically. Use machine to PULL only.	Cable HazardEnsure that load bearing cable is not kinked or knotted.	Winch Cable HazardEnsure that there is a minimum number of cable coils on winching mechanism.
Winch Hook HazardCarry hook to load – do NOT throw or run.	Flash / Blinding HazardWear appropriate eye protection for welding. Direct exposure to weld arcs may cause permanent eye injury.	Laser HazardLaser may be in use – do NOT look directly at laser or allow others to.

Table of Contents

Safety 2

Safety Symbols....6

Parts Identification 9

Assembly....10

Operation....13

Protective Devices....13

Adjusting the Cutting Height....15

Battery Pack Assembly / Disassembly....15

Preparation for Mowing 16

Cutting 16

Transport and Storage 18

Lifting and Transport....18

Storage 19

Lithium Battery Care and Maintenance 20

Top 3 Battery Care Requirements....20

DANGER - CHARGING THE BATTERY ......21

Repair and Maintenance 22

Cleaning and Maintenance After Use....22

Replacing/Sharpening the Blade....22

Wheel Replacement/Disassembly....23

Troubleshooting 24

Specifications 25

Parts Identification

No.	Name	No.	Name
1	Jumper, dead man's grip	10	Knife blade
2	Handle	11	Lever, height adjustment
3	Push button, safety switch	12	Steering wheel
4	Cable clips	13	Rear wheels
5	Locking lever	14	Hatch, draft
6	Battery cover	15	Collector
7	Carrying handle	16	Indicator
8	Front wheel	17	Lifting handle, collector
9	Steel tyres

Spare parts available for purchase, scan QR code below:

Assembly

Carefully unpack the machine and check that no part is missing or damaged during transport. Should any part be damaged or missing, please contact the supplier.

1. Screw the lower part of the handle (22) into its bracket (21) using the two knobs and the supplied carriage bolt (12).

1. Secure the upper handle part (23) to the lower (22) with the locking lever (5). Fold in the locking lever and screw it into its nut so that the handle is clamped. To later release the locking lever, fold it out. Secure the motor cable with the supplier cable holders provided.

Close-up of hands holding black cable connectors, no visible text or symbols

IMPORTANT: You must secure the motor cable to the outside of the handle. Failure to do this may result in the cable getting damaged when you fold the handles for storage.

Close-up of a person adjusting a car hood with red clamps and a green vehicle (no visible text or symbols)

Close-up of a mechanical component with a yellow arrow pointing to a detail (no visible text or symbols)

Close-up of a black automotive engine component with visible bolts and mesh texture (no text or symbols)

1. Lift the ejection shoot cover and lower the catcher into the designated cut-outs as shown above. Then lower the ejection shoot into place.

Close-up of hands installing a black BAO device on a carpet, with a yellow arrow pointing to the device (no text or symbols visible)

Close-up of hands holding a black plastic cover with a red handle, next to a white car (no visible text or symbols)

Close-up of a car brake caliper with visible branding and mounting base (no readable text or symbols)

Close-up of a hand holding a black plastic component with a yellow arrow pointing to it, next to a vehicle chassis (no visible text or symbols)

Close-up of a mechanical component with a metal frame and internal cavity (no visible text or symbols)

1. The side chute is attached as per the instructions above, please note that you must insert the mulch plug in place of the catcher in order to utilize the side chute.

Routing the Throttle and Choke Lever Cables

The images below show how to correctly route the cables. They must be routed on the inside of the handles if you intend on regularly folding them for storage. If routed underneath the handles or in any other way than shown, you will risk pinching and damaging the cables.

Close-up of a black bicycle support frame with green checkmarks indicating selection (no text or symbols on the frame itself)

VIDEO TUTORIAL: FOLDING THE HANDLES FOR STORAGE

Operation

Protective Devices

WARNING! Never use the mower if any protective device has been deactivated, is missing, or broken.

The key (3)

For the engine to start, the key (25) must be pressed into the key lock under the battery cover (6).

WARNING! Always remove the key when leaving the mower unattended. This is to prevent children and prised persons from accidentally starting the engine.

Safety key (3), dead man's grip (1)

With the safety switch and the dead man's grip, the engine is started and switched off.

- Start

a. Insert the safety key.
b. Press and hold the safety switch.
c. Pull the dead man's grip upward while holding the handle.
d. Release the safety switch.

- Stop - Release dead man's grip (1).

You must install the safety key in the direction shown. If you insert it upside down, the mower will not start.

Close-up of a hand holding a red plastic clip attached to a black car hood, with visible wiring and a yellow tag (no text or symbols on the clip itself)

Close-up of a hand adjusting a red and beige plastic clip attached to a black car hood (no text or symbols visible)

The collector (15)

It acts as a foot and draft protection. If the lawnmower is pulled back, the collector prevents the feet from getting under the lawnmower and thus in contact with the rotating knife.

There is an indicator (16) on the collector that shows whether the collector is full or not. When the engine is running, and the indicator is:

- Lowered - Empty the collector (15) by lifting the cover (14) slightly and then lifting the collector by its handle (17). When emptied, lift the hatch (14) and hang the collector on its suspension hooks.

- Raised - The collector is not full, continue mowing.

When the indicator is closed, stop the engine, and empty the collector. When the indicator is open, continue cutting.

Hatch, draft (14)

Protects against accidental touching of the blade if the collector is not mounted on the mower, in addition it holds the collector (15) in place.

Battery cover (6)

Prevents water droplets and dirt from meeting the battery pack/s, which can cause a short circuit.

Adjusting the Cutting Height

WARNING! Never adjust the cutting height when the blade is still rotating.

Close-up of a black tire with visible tracks and mounting hardware, marked with yellow curved arrows indicating motion (no text or symbols)

Close-up of a black plastic brake component being cut with red-handled fingers, showing internal structure and motion direction (no text or symbols)

The lawnmower has six cutting heights: 25 / 35 / 45 / 55 / 65 / 75mm. To adjust the cutting height, lift the lever (11) out of position and then move it forward / backward to the desired cutting height. Check that the lever is locked in its new position.

NOTE: The lowest minimum cutting height is only for trimming a very even and flat lawn. If the grass is high, mow the grass twice, first at the highest position and then at a lower cutting height.

Battery Pack Assembly / Disassembly

WARNING! • Read the operating instructions of the battery pack and the battery charger before charging the battery pack for the first time.

If the battery is not handled and charged according to the instructions in its operating instructions, damage may occur. • The lawnmower may only be used together with a battery pack from the supplier. Other battery packs can cause personal injury and machine damage. There is room for one or two battery packs (26) in the mower. When mowing with a battery pack, it can be mounted in any compartment.

1. Check that the battery pack is fully charged by pressing its indicator button. If not, charge the battery pack(s).
2. Lift the battery cover (6).
3. Insert the battery pack (26) into its bracket.
4. Check that the battery pack is locked. Then close the battery cover.
5. To remove the battery pack, press the two lock buttons (27) and pull out the battery pack (26).

NOTE: Battery packs and battery chargers are not included but are sold separately. A new battery pack must be fully charged before using it for the first time.

Preparation for Mowing

1. Inspect the cutting surface and clean it of foreign objects such as stones, cones, toys and more.
2. Check and inspect that the mower is intact and that its protective devices are working and in place.
3. Set the cutting height.
4. Check the battery status of the battery pack(s) and if they are not fully charged, charge them.
5. Fit the battery pack/s.
6. Insert the key (25) into the key lock.

Cutting

WARNING! • Do not walk faster than the mower has time to mow. • It can be dangerous to mow on slopes. Do not use the mower as it slopes more than 15^ . Risk of the operator slipping / falling and then losing control of the mower. Cut parallel to the slope, do not go up and down the slope. Risk of the operator falling and being run over by the mower. • Never pull the mower towards you. Increased risk of a foot coming under the mower. • Never cut backwards when walking. Risk of the operator falling. • If the mower vibrates violently, switch it off immediately and rectify the fault. • The blade continues to rotate for a few seconds after the machine is turned off. Allow the engine / blade to stop rotating completely before restarting the engine. • Do not mow grass that is wet due to rain or dew. Risk of short circuit.

Battery-powered lawnmowers are suitable for lawns that are mowed often and regularly. To create a well-kept lawn, we recommend that it is mowed at least twice a week during the growing season. Do not cut more than 20 - 50mm of grass at any one time. If the grass needs to be cut more, it should be done in two steps. First in the highest cutting position in one direction (A) and then in the desired cutting height in the transverse (B) direction.

How long the operating time and how much cutting area the lawnmower can mow depends on your factors, including:

• The length of the grass and the set cutting height.
  • The density of the lawn.
• Walking speed and the size of the overlap.
  • Sharpness of the knife blade.
  • Number of battery packs and their status.

It is estimated that for normal-height grass in mowing position 3, it is possible to mow a grass area of approx. 275-325 m ^2 with a battery pack of 2.5Ah without recharging and approx. 550-650 m ^2 with two battery packs of 2.5Ah.

1. Place the mower on a flat and level surface, if the grass is very high, tilt the mower slightly backwards so that the front wheels are in the air to reduce the engine resistance at start.
2. Start the engine.
3. Start mowing and empty the collector if necessary.
4. When mowing is complete, turn off the engine and remove the key (25).

550CX Electric Lawn Mower Kit

Bäumr-AG®

1. Charge the battery pack.
2. Clean the mower and collector.

Transport and Storage

Lifting and Transport

WARNING! When lifting and transporting, the battery pack(s) and/or key (25) must be removed from the mower.

When lifting:

1. Loosen the two locking levers (5) and lower the upper part of the handle.
2. Grasp with one hand in the carrying handle (7) and the other hand in the lower handle part (22), in this way there is no risk of any hand coming into contact with the knife blade.

When transporting in vehicles:

1. The upper handle part must be lowered.
2. The lawnmower must be well clamped so that it cannot move during heavy braking or cornering.

Storage

WARNING! When storing, the battery pack / s must be removed from the mower.

When storing:

1. The safety key must be removed (25).
2. The battery pack / item is fully charged and stored separately. It must not be mounted in the lawnmower. See battery pack instructions for use.
3. The lawnmower and especially the collector must be cleaned of grass residues. Any grass residue can rot and produce moulds, damaging the collector's fabric.
4. Standing on all four wheels with the upper handle folded down so that the mower takes up less space.
5. The lawnmower is stored in a dry room with a temperature of between -20^ and +40^ inaccessible to children and unauthorised persons.
6. Do not store the mower near chemicals, solvents, or fertilizers. Such products are often degrading and can cause irreparable damage to the mower.

Lithium Battery Care and Maintenance

Top 3 Battery Care Requirements

1. Charge battery before first use. The battery may arrive with some charge, regardless of this the battery must be charged for 2 hours on the initial charge and 2 hours for each subsequent charge.
2. Charge battery immediately when it is depleted. Do not store a depleted battery. This will permanently impact the life of the battery. If the battery is going to be stored for a period of time, fully charge the battery before storing.
3. Disconnect battery when not in use. To prolong the life of a battery, disconnect it from the unit when not in use. Disconnect chargers from the battery once charged.

To ensure the battery maintains optimum performance, follow the guidelines outlined below.

• For best results, charge batteries in temperatures between 10^ and 30^
• When battery is charged, disconnect the charger from the power supply and remove the battery from the charger.
• If a battery is stored or otherwise unused for an extended period, and the battery has no charge remaining when you check it, consider it to be damaged. Do not attempt to recharge it or to use it. Replace it with a new battery.
• Use only with the battery charger specified by the manufacturer.

- Ensure that the battery charger electrical cord is not subjected to damage or stress. Do not operate the battery charger if it has a damaged electrical cord or plug.

- Do not use the charger in wet areas or expose it to rain or water.

- The typical estimated life of a Lithium-Ion battery is about two to three years or 300 to 500 charge cycles, whichever occurs first. One charge cycle is a period of use from fully charged, to fully discharged, and fully recharged again

- Explosion hazard – protect the battery against heat, for example, direct sunlight and fire. Do not store batteries in vehicles or locations subject to heat.

- Batteries can explode in the presence of an ignition source, such as a pilot light. To reduce the risk of serious personal injury, never use any cordless product in the presence of open flame. Exploding batteries can propel debris and chemicals.

- Do not open the battery – danger of short-circuiting and/or explosion.

- Do not attempt to destroy or disassemble the battery pack or remove any of its components.

- Do not touch the battery terminals with metal objects and/or body parts as short-circuit and/or personal injury may result.

- Explosion hazard – do not open and/or short-circuit the battery.

- Poison hazard – battery leakage (liquid ejection). Under extreme conditions, liquid may be ejected from the battery – avoid contact. If contact accidentally occurs, immediately seek medical attention, and flush with water. If liquid contacts eyes, immediately seek medical attention, flush with clean water for at least 10 minutes. Liquid ejected from the battery may cause irritation or burns.

- Dispose of non-serviceable batteries in an environmentally responsible manner and according to local regulations.

Failure to adhere to the requirements above may result in the battery becoming inoperative or battery life being reduced. In extreme cases or abuse, battery overheating, or fire may result.

DANGER - CHARGING THE BATTERY

Like mobile phones, laptops, cordless vacuum cleaners etc., this product contains a lithium-ion battery pack. Lithium-ion batteries allow fast charging and high capacities, however care must be taken to reduce chances of a fault and increase safety in case a fault occurs. Catastrophic faults with larger lithium-ion batteries have a tendency to result in large amounts of smoke and fire. Be sure to follow the points below to reduce the likelihood of danger while charging.

• Never charge a battery that has been damaged or subjected to a forceful impact.
• Never charge a battery that has been exposed to moisture or water.
• Never charge a battery with a charger that wasn't supplied with the battery.
• Never use a battery in a device that it wasn't specifically designed for.
• Never use a battery with a modified or damaged device.
• Never modify the battery, product, charger, circuitry, or wiring.
• Never charge a battery when the battery or charger is displaying a problem or charging incorrectly.
  • Always charge batteries on a non-combustible surface, for example, on a concrete floor.

- Never charge a battery in an exit path that may be used by people to leave a room or building in case of an emergency, for example, the hallway or foyer of a residence.

- Never charge a battery in an area or building that doesn't have the recommended number of working smoke detectors that have been tested in accordance with local guidelines.

- Always charge batteries at least 3m away from anything combustible, such as floors, wall surfaces, furniture, storage shelves etc.

- Always charge batteries in an open area (outside if possible) ensuring the battery and charger are away from moisture and water.

- Always ensure batteries are charged under adult supervision. Do not charge batteries while no one is home or while people are sleeping.

Repair and Maintenance

WARNING! • Always remove the battery pack(s) and/or key (25) from the mower before repair and maintenance. • Never use running water or chemicals when cleaning. • Wear protective gloves when g and changing blade blades.

Cleaning and Maintenance After Use

• Charge the battery pack.
  • Clean the wheels of stuck grass blades.
  • Clean the collector from grass residues.
• Blow-clean the upper part with compressed air or wipe it with a dry soft cloth.
• Check that the blade is sharp, if not sharpen the blade.
• Do not repair the lawnmower and its protective devices, if not repair them.

- Clean the draft and the space at the blade under the mower with a brush. Scrape off ingrained dirt with a piece of wood or plastic.

Replacing/Sharpening the Blade

Check regularly that the knife is sharp. A sharp knife cuts the grass more easily and consumes less energy, which means that larger areas can be cut without the battery pack having to be recharged. Replace the blade immediately (29) immediately if it is worn, unbalanced, bent, or damaged.

To disassemble the knife blade:

1. Carefully turn the mower on its side with the height adjustment lever (11) facing up.
2. Grasp the blade (29) firmly and loosen the blade bolt (28) anti-clockwise.
3. Remove the knife bolt, washer, and knife blade.

4. Replace or sharpen the knife. When sharpening, file the edge of the knife with even and gentle grips with a fine-toothed file. Be sure to cut equally on both sides of the knife so that its balance is not affected.

5. Check the balance by holding the knife blade in its bolt hole with a pencil or similar. The knife blade must then be able to be kept in balance. If not, the knife blade is unbalanced.

6. Refit the knife, washer, and screw. Make sure that the guide pins enter the guide holes on the knife blade.

Wheel Replacement/Disassembly

1. Loosen the wheel hub with a small-slotted screwdriver.
2. Unscrew the locknut and pull out the wheel.
3. To mount the wheel, tighten the locknut and press the hub.

Troubleshooting

PROBLEM	CAUSE	POSSIBLE SOLUTIONS
The engine does not start.	1. The key is not securely fastened in its lock.2. Incorrect start procedure.3. The battery pack is discharged or not inserted correctly.4. Defective battery pack.5. Blocked knife blade.	1. Remove the key and insert it again.2. First push in the safety switch and then raise the dead man's handle.3. Remove the battery pack and check its charge status.4. Replace the battery pack. Perform the start-up procedure in the correct order.5. Remove cutting debris that prevents the blade from rotating.
The engine stops during mowing.	1. The battery pack is discharged.2. The battery pack overload protection has tripped.	1. Charge the battery pack.2. Allow the battery pack to cool and raise the cutting height to the highest cutting height and go at a slower pace.
The lawnmower is slow to move.	1. The grass is too high or dense.2. The collector, cutting house or draft is full of grass clippings.3. The wheels rotate slowly.	1. Raise the cutting height, increase the overlap, and go slower.2. Empty the collector and clean the draft and the cutting house from grass clippings.3. Clean around the wheels and check for wear.
Excessive vibration or noise.	1. The knife blade is loose.2. The knife blade is unbalanced or damaged.	1. Tighten the knife bolt.2. Check the blade.
Cutting result is not satisfactory.	1. The knife blade is dull.2. Too low cutting height.3. Too high cutting speed	1. Sharpen or replace the blade.2. Raise the cutting height and cut in two rounds instead.3. Slow down.
The grass clippings do not enter or stop in the collector.	1. The collector is full.2. Too low cutting height.3. Too high cutting speed.4. The draft is clogged.5. Collector vent holes are clogged.	1. Empty the collector.2. Raise the cutting height.3. Slow down.4. Clear the draft.5. Clean the collector.
Self-propel function no longer works.	Excessive grass build-up.Drive belt has become dislodged.	Remove drive belt cover plate from the underside of the mower and remove all clumps of grass build-up.Remove drive belt cover plate from the underside of the mower and reseat the drive belt.

Specifications

Cutting Width 380mm

Cutting Height 25-75mm

Power 550W

Catcher Volume 40L

Running Time 2x 4AH - no-load operation 120min

Charging Time 2 hours

Front Wheel 7 inches

Rear Wheel 10 inches

Deck Size 15" (380mm)

Adjustment 6 cutting positions

Foldable Yes

Some experts believe that the incorrect or prolonged use of almost any product may cause serious injury or death. To help reduce your risk of serious injury or death, refer to the information below. For more information, see www.datastreamserver.com/safety

• Consult all documentation, packaging, and product labelling before use. Note that some products feature documentation available online. It is recommended to print and retain the documentation.
  ■ Before each use, check the product for loose/broken/damaged/missing parts, wear, or leaks (if applicable). Never use a product with loose/broken/damaged/missing parts, wear, or leaks.
  ■ Products must be inspected and serviced (if applicable) by a qualified technician every 6 months. This is based on average residential use by persons of average size and strength, and on a property of average metropolitan size. Use beyond these recommendations may require more frequent inspections/servicing.
  ■ Ensure that all users of the product have completed a suitable industry recognised training course before being allowed access to the product.

The product has been supplied by a general merchandise retailer that may not be familiar with your specific application or description of application. Be sure to attain third-party approval from a qualified specialist for your application before use, regardless of any assurances from the retailer or its representatives.
This product is not intended for use where fail-safe operation is required. As with any product (for example, automobile, computer, toaster), there is the possibility of technical issues that may require the repair or replacement of parts, or the product itself. If the possibility of such failure and the associated time it may take to rectify could in any way inconvenience the user, business, or employee, or financially affect the user, business, or employee, then the product is not suitable for your requirements. This product is not intended for use where incorrect operation or a failure of any kind, including but not limited to, a condition requiring product return, replacement, parts replacement, or service by a technician may cause financial loss, loss of employee time or an inconvenience requiring compensation.
If this product has been purchased in error when considering the information presented here, contact the retailer directly for details of their returns policy, if required.

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