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Hedge Trimmer Maintenance: How to Clean and Oil the Blades
A hedge trimmer comes into contact with leaves, twigs, plant sap and sometimes sticky resin every time you trim a hedge. Some of that material remains on and between the blades, where it can dry and become increasingly difficult to remove. Regular hedge trimmer maintenance helps keep the cutting mechanism clean and ready for the next job. In this guide, you will learn how to clean and lubricate hedge trimmer blades, which type of oil or spray to use, how to deal with resin and what to check when the blades are not moving. We also cover cordless, electric and petrol hedge trimmers, plus cleaning and disinfecting pruning shears.
What will you learn in this article?
Hedge trimmer maintenance at a glance
Why is hedge trimmer maintenance important?
The cutting blades of a hedge trimmer move rapidly against each other while cutting leaves and branches. During this process, plant sap, resin and small pieces of vegetation can collect on the blade surfaces.
If you store the machine without cleaning it, this residue can dry onto the cutting mechanism. That makes the blades more difficult to clean later and may restrict their free movement.
Good hedge trimmer maintenance therefore starts immediately after trimming. A quick clean after use, combined with regular inspection and lubrication, is more practical than waiting until a thick layer of residue has accumulated.
How to clean a hedge trimmer step by step
It is best to clean a hedge trimmer shortly after you finish working. Fresh clippings and plant sap are generally easier to remove than residue that has dried onto the metal.
Disconnect the power source
Remove the battery or unplug the power cord. With a petrol hedge trimmer, follow the manufacturer's procedure to prevent accidental starting during maintenance.
Remove leaves and twigs
Carefully remove loose hedge clippings from around the blades. Never put your bare fingers between the cutting teeth to pull out trapped material.
Wipe the blades clean
Use a suitable cloth to wipe plant sap and dirt from the cutting surfaces. Wear appropriate work gloves and keep your hands away from the sharp cutting edges.
Remove stubborn residue
If dried sap or resin remains on the blades, use only a cleaner or resin remover that is suitable for metal garden cutting tools and permitted by the tool manufacturer.
Let the cutting mechanism dry
Remove excess cleaning product or moisture according to its instructions. Once the blades are clean and dry, you can move on to lubrication.
How to clean an electric hedge trimmer
When cleaning an electric hedge trimmer, the most important first step is making sure the cutting mechanism cannot start. With a corded model, disconnect the plug completely before touching the blades.
For a cordless hedge trimmer, remove the battery first. You can then remove loose clippings and wipe the blades clean. Do not immerse the hedge trimmer in water or spray water directly into the motor housing, battery connection or other electrical components.
Cleaning is also a useful time to inspect the cutting mechanism. Look for visibly damaged, heavily worn or bent teeth. If the blade assembly appears damaged, consult the manual rather than trying to straighten or repair the cutting mechanism by hand.
Hedge trimmer oil: how to lubricate the blades
Cleaning removes plant residue, but the moving cutting surfaces also need appropriate lubrication. The blades slide rapidly against each other, so a suitable lubricant helps keep that movement smooth and protects the metal surfaces.
When looking for hedge trimmer oil or oil for a hedge trimmer, do not automatically use whatever oil you already have in the garage. Check the manual for your machine and choose an oil or spray that is suitable for moving hedge trimmer blades.
How to lubricate hedge trimmer blades
Clean the blades first
Do not simply spray fresh lubricant over dirt, resin and plant material. Clean the cutting mechanism first and allow it to dry.
Disconnect the power
Remove the battery or unplug the machine before applying oil or spray directly to the cutting mechanism.
Apply the lubricant evenly
Apply the lubricant according to the product instructions and the maintenance instructions for your hedge trimmer. Concentrate on the moving cutting surfaces.
Remove unnecessary excess
More lubricant is not automatically better. Wipe away excessive oil where necessary and follow the instructions supplied with the maintenance product.
Can you use WD-40 on a hedge trimmer?
WD-40 is often mentioned when people discuss garden tool maintenance. However, cleaning, loosening residue, displacing moisture and lubricating moving cutting surfaces are not necessarily the same task.
WD-40 is also a brand that sells different products. The brand name by itself therefore does not tell you whether a particular product is suitable as the regular lubricant for your hedge trimmer blades.
If you want to use a WD-40 product for hedge trimmer maintenance, check the intended application of that specific product and compare it with the instructions for your machine.
What about a resin remover for hedge trimmers?
A hedge can leave a sticky layer of sap and resin on the cutting blades. Once this residue has dried, a cloth alone may not remove it easily.
A hedge trimmer resin remover can be useful for stubborn contamination, provided the cleaner is suitable for the blade materials and approved for use with your machine. Follow the cleaner's instructions and prevent liquid from running into electrical components or the motor housing.
Once the blades are clean and dry, apply the appropriate lubricant again if required by the hedge trimmer's maintenance instructions.
A cordless hedge trimmer for regular garden maintenance
A cordless hedge trimmer gives you more freedom to move around hedges and shrubs because there is no extension cable to manage. It also removes the possibility of accidentally cutting through your own power cable while trimming.
The Batavia 18V Cordless Hedge Trimmer has a 560 mm cutting length and a stated cutting capacity of 17 mm. It features a two-hand safety switch and hand guard and works with Batavia's 18V Maxxpack battery platform. It is designed for trimming and shaping hedges and shrubs around the garden.
Cordless operation does not remove the need for maintenance. Remove plant sap and pruning residue from the blades after use and keep the cutting mechanism lubricated according to the maintenance instructions. Always remove the battery before cleaning or working around the blades.
Hedge trimmer blades not moving? Check these points
If your hedge trimmer blades are not moving, do not repeatedly pull the trigger in an attempt to force the cutting mechanism free. Stop the machine and disconnect its power source first.
- Check whether a branch or piece of plant material is trapped between the blades.
- Look for dried plant sap, resin or dirt restricting the cutting mechanism.
- On a cordless model, check whether the battery is correctly fitted and sufficiently charged.
- Make sure the required safety switches are being operated correctly.
- Inspect the blade assembly for visible damage or deformation.
- Check whether the blades require lubrication according to the maintenance instructions.
Only remove a blockage after the machine has been made safe and cannot start. Never place your fingers between the cutting teeth to search for or remove an obstruction.
If there is no obvious blockage and the blades still do not move correctly, stop using the hedge trimmer. A problem involving the drive mechanism or other internal components should be investigated according to the manual or by a suitable repair professional.
Maintaining a petrol hedge trimmer
A petrol hedge trimmer requires maintenance of both the cutting mechanism and its combustion engine. Depending on the machine, this can include checking components such as the air filter, spark plug and fuel system.
If you are looking for the right petrol for a hedge trimmer, do not rely on a general fuel recommendation. The required fuel type and any fuel-to-oil mixing ratio depend on the engine. Always use the specifications in the manual for your particular machine.
Allow the engine to cool before maintenance and follow the manufacturer's procedure for preventing accidental starting. Handle fuel in a well-ventilated location away from flames, sparks and other ignition sources.
How to clean and disinfect pruning shears
Your hedge trimmer is not the only garden cutting tool that collects plant sap and dirt. Pruning shears can also become covered with plant residue, especially during larger pruning jobs.
To clean pruning shears, remove visible plant material and wipe the cutting surfaces clean. Pay attention to the pivot mechanism as well as the blades. Keep your fingers away from the cutting edges and use the locking mechanism where appropriate.
When should you disinfect pruning shears?
You may want to disinfect pruning shears after working on plants that show possible signs of disease, particularly before moving on to other plants. This can help reduce the transfer of contaminated plant material on your tools.
Choose a disinfectant suitable for pruning tools and follow its instructions for dilution, contact time and safe handling. Allow the tool to dry afterwards and lubricate moving metal parts when required.
A practical hedge trimmer maintenance routine
- After trimming: remove leaves, twigs and visible plant sap.
- Regularly: inspect the blades for dirt, damage and free movement.
- After cleaning: lubricate the cutting blades when required by the manual.
- Before use: inspect the hand guard, switches and general condition of the machine.
- Before long-term storage: clean the machine, maintain the blades and store it in a dry place according to the manufacturer's instructions.
The exact maintenance frequency depends on how often you use the hedge trimmer and what you cut. A machine that regularly cuts dense, wet or resinous plants may need cleaning more frequently than one used only a few times each year.
Common hedge trimmer maintenance mistakes
One of the most important mistakes to avoid is cleaning the blades while the hedge trimmer can still start. Always disconnect the relevant power source before touching the cutting mechanism.
Another common mistake is storing the hedge trimmer while the blades are covered in sap and plant residue. Cleaning fresh residue is usually much easier than removing it after it has dried.
Do not assume that every oil or spray in your workshop is suitable either. Check whether the lubricant is intended for moving cutting blades and compatible with the maintenance instructions for your machine.
Finally, never try to solve a jam by repeatedly starting the hedge trimmer. Make the machine safe first and identify the cause of the blockage.
How to maintain a hedge trimmer safely
The cutting teeth remain sharp even when a hedge trimmer is switched off. Cleaning and maintenance therefore require the same careful approach as trimming.
- Remove the battery before maintaining a cordless hedge trimmer.
- Unplug a corded electric hedge trimmer before touching the blades.
- Wear suitable work gloves when cleaning or handling sharp cutting parts.
- Never put your fingers between the cutting teeth to remove debris.
- Wear safety glasses if dirt or cleaning product could splash towards your eyes.
- Use sprays, oils and cleaning products in a well-ventilated area.
- Keep maintenance products away from children.
- Fit the blade cover before storage when one is supplied.
- Follow the safety and maintenance instructions in the product manual.
Frequently asked questions about hedge trimmer maintenance
What oil should I use on a hedge trimmer?
Use an oil or lubricant intended for moving hedge trimmer blades and compatible with the manufacturer's maintenance instructions. Do not automatically use motor oil or another general-purpose workshop lubricant. Check the hedge trimmer manual as well as the application information supplied with the oil or spray before using it.
How often should you oil hedge trimmer blades?
Follow the maintenance schedule in your hedge trimmer manual. The required frequency also depends on how much you use the machine, the type of vegetation you cut and how quickly the blades become dirty. Inspect the cutting mechanism regularly and lubricate it after cleaning when the manufacturer's instructions recommend doing so.
Can you use WD-40 on hedge trimmer blades?
That depends on the specific WD-40 product and the maintenance requirements of your hedge trimmer. WD-40 is a brand covering different products, so the brand name alone does not mean a product is suitable as the regular blade lubricant. Check the specific product label and your hedge trimmer manual first.
Why are my hedge trimmer blades not moving?
A branch, dried sap or other debris may be blocking the blades. The problem could also involve the battery, power supply, safety switches or drive mechanism. Disconnect the power source first and check for visible obstructions. If you cannot safely identify the cause, stop using the hedge trimmer and have the machine checked.
How do you clean an electric hedge trimmer?
Unplug the machine or remove its battery before cleaning. Carefully remove loose plant material and wipe the cutting blades with a suitable cloth. If stubborn resin remains, use only a compatible cleaner. Avoid allowing water or cleaning liquid to enter the motor housing, battery connection or other electrical components.
Should you clean a hedge trimmer after every use?
It is good practice to remove leaves, twigs and obvious plant sap after trimming. This is particularly useful after cutting damp or resinous vegetation because the residue can become more difficult to remove after drying. More extensive maintenance and lubrication should follow the instructions for your particular hedge trimmer.
Conclusion: keep your hedge trimmer ready for the next job
Regular hedge trimmer maintenance does not need to take long. Remove leaves, sap and other residue after trimming, inspect the cutting mechanism and lubricate the blades with a suitable product according to the manufacturer's instructions.
If the blades stop moving, disconnect the power before checking for obstructions and never force a jammed machine. The same careful approach applies when choosing hedge trimmer oil, spray or resin remover: make sure the product is actually suitable for the cutting mechanism.
A short cleaning and maintenance routine after trimming helps prepare your hedge trimmer properly for the next job.
