Do you have a question about the 5125-018 and is the answer not in the manual?
Questions and answers
Robert Ruttenberg
June 3, 2025
Can I purchase a replacement yellow safety key for my Radley 40 V electric lawnmower: 5125-018. My lawnmower is just 3 years old. Thank you!
Bob Ruttenberg
40 V Max Lawn Mower Owner’s Manual GENERAL SAFETY WARNINGS IMPORTANT SAFETY INSTRUCTIONS Read and understand all safety and operational instructions. Failure to follow the safety rules listed below and other basic safety precautions may result in serious personal injury. Keep this manual, sales receipts and applicable warranty forms for future reference.
5125-018 WARNING: Ventilation openings in batteries and chargers must always be open to allow cooling air to circulate freely. Air vents that are blocked, restricted or covered may result in the battery or charger overheating. Overheating may lead to damage to the tool or cause a fire, resulting in possible serious injury.
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40 V Max Lawn Mower Owner’s Manual Mow across the face of slopes, never up and down. Exercise extreme caution when changing direction on slopes. Do not mow excessively steep slopes. Use extreme caution when reversing or pulling the product towards you. Stop the cutting device(s) if the product has to be tilted for transportation when crossing surfaces other than grass, and when transporting the product to and from the area to be mowed.
5125-018 Wear strong work gloves when removing and reassembling the cutting device. BATTERY PACK & CHARGER SAFETY BATTERY SAFETY INSTRUCTIONS WARNING! Only use the charger supplied with this kit to charge the 20V Li-ion batteries for this tool. Charging any other batteries may damage the charger and possibly cause serious injury.
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40 V Max Lawn Mower Owner’s Manual water. If liquid gets into your eyes, flush them with clean water for at least 10 minutes, then seek immediate medical attention. When battery pack is not in use, keep it away from other metal objects like: paper clips, coins, keys, nails, screws, or other small metal objects that can make a connection from one terminal to another.
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5125-018 Avoid mechanical damage to the charger. This can result in internal short circuits. Do not operate the charger on easily inflammable surfaces (e.g. paper, textiles, etc.). The heating of the battery charger during the charging process could pose a fire hazard.
40 V Max Lawn Mower Owner’s Manual RECYCLING AND DISPOSAL WARNING! Waste electrical products should not be disposed of with household waste. Please recycle where facilities exist. Check with your local authority or local store for recycling advice. Old products are potentially recyclable and do not, therefore, belong in your household garbage.
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5125-018 SAFETY SYMBOLS WARNING! Please read all of the safety and operating instructions carefully before using this tool. Please pay particular attention to all sections of this User Guide that carry warning symbols and notices. Some of the following symbols may be used on this tool.
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40 V Max Lawn Mower Owner’s Manual Inspect the area where the Warning! Danger. product is to be used and remove all objects which Read the operator’s manual. can be thrown by the product. If objects are hidden while WARNING! Beware of operating stop the product electric shocks.
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5125-018 Beware of sharp blades. Remove plug from the Blades continue to rotate power source immediately if the power cord is after the motor is switched off - Remove disabling damaged or cut. device before Batteries and battery maintenance. packs should not be disposed of with house- GO –...
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40 V Max Lawn Mower Owner’s Manual KNOW YOUR 40V BRUSHLESS LAWN MOWER Quick release Start lever lever Upper handlebar Foam Grip Safety lock-off Lower switch handlebar Control cord Height adjustment Cord lever retainer Grass catcher Rear wheel Battery charger Front wheel 5350-046 Battery...
5125-018 ASSEMBLY UNPACKING Unpack all parts and lay them on a flat, stable surface. Remove all packing materials if applicable. Make sure the delivery contents are complete and free of any damage. If you find that parts are missing or show damage do not use the product but contact Customer Service @ 1-866-349-8665.
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40 V Max Lawn Mower Owner’s Manual UPPER HANDLE BAR Align the upper handlebar to the lower handlebar and ensure the foam handle is pointed up when viewed from behind. Pass the bolts through the mounting holes of handles (Fig. 2). Attach the washer to the bolt and secure the upper handlebar by turning the lever up for tightening (Fig.2).
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5125-018 CHECKING THE BATTERY CHARGE STATUS The level of charge remaining in the battery can be checked by using the battery LED power indicator that is contained on the end of the battery. NOTE: The battery charge remaining may be checked while the battery is installed in the tool with the ON/OFF switch turned OFF.
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40 V Max Lawn Mower Owner’s Manual Battery Inserted Green Light Red Light Charging Status Into Charger Charger connected to power supply. Battery being charged. Battery fully charged. Battery is charged but not operational on tool. This may indicate defective / bad contact on battery or charging conditions are either too hot or too cold.
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5125-018 CUTTING HEIGHT ADJUSTMENT WARNING: Switch the product off and wait until the blade has come to a complete stop before adjusting the cutting height! Remove the safety key before adjusting the cutting height! Adjust the cutting height according to the needs of your lawn. The cutting height depends on the kind of lawn and its actual height.
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40 V Max Lawn Mower Owner’s Manual When the hatch is open the grass catcher has sufficient volume left to collect grass (Fig. 11). When the hatch is closed, the grass catcher is full and must be emptied (Fig. 11). EMPTYING THE GRASS CATCHER Empty the grass catcher frequently during use.
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5125-018 STARTING/STOPPING Insert batteries. Plug the safety key into the slot fully. Stand behind the grip handle . While holding the safety lock-off switch pressed, pull the start lever towards the handle. After the mower starts, release the safety lock-off switch.
40 V Max Lawn Mower Owner’s Manual MAINTENANCE WARNING: Always switch the mower off, remove the battery packs and the safety key and let the mower cool down before performing inspection, maintenance and cleaning work! Keep the mower clean. Remove debris after each use and before storage. Regular and proper cleaning will help ensure safe use and prolong the life of the product.
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5125-018 Keep the blade sharp to ensure a good cutting performance. Replace a worn or damaged blade with a new one of the same type or have it sharpened by a qualified specialist. Loosen the hex bolt counterclockwise using the supplied hex wrench and remove it together with the washer and the blade (Fig.
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40 V Max Lawn Mower Owner’s Manual CHARGER If the power cord of the charger is damaged, it must be replaced by the manufacturer, its service agent or similarly qualified persons in order to avoid a safety hazard. STORAGE Remove batteries from mower. Clean the product as described above.
40 V Max Lawn Mower Owner’s Manual PARTS LIST WARNING: When servicing, use only original equipment replacement parts. The use of any other parts may create a safety hazard or cause damage to the brushless lawn mower. Any attempt to repair or replace electrical parts on this brushless lawn mower may create a safety hazard unless repairs are performed by a qualified technician.
WARRANTY RADLEY 40V BRUSHLESS LAWN MOWER WARRANTY If this Radley tool fails due to a defect in material or workmanship within three years from the date of purchase, return it to any Home Hardware store with the original bill of sale for exchange.
Need help?
Do you have a question about the 5125-018 and is the answer not in the manual?
Questions and answers
Can I purchase a replacement yellow safety key for my Radley 40 V electric lawnmower: 5125-018. My lawnmower is just 3 years old. Thank you! Bob Ruttenberg