Every time you use a hedge trimmer, it undergoes significant stress, leaving traces of wear and tear. If these issues are not addressed, they can worsen and become real problems over continued use until your hedge trimmer starts to perform poorly. By regularly maintaining your hedge trimmer, you can detect and resolve these issues early, preventing more serious damage and malfunctions.
Common Problems and Solutions
- Unable to start
Causes: Insufficient fuel, faulty spark plug, or blocked fuel line.
Solutions: Check the fuel tank for fuel, clean or replace the spark plug, and ensure the fuel line is clear.
- Lack of power
Causes: Dirty air filters or worn blades.
Solutions: Regularly clean or replace the air filter, inspect the blades and sharpen or replace them as necessary.
- Excessive vibration
Causes: Improper blade installation or worn bearings.
Solutions: Check if the blades are securely fastened and reinstall them if necessary; replace worn bearings.
- Overheating
Causes: Insufficient lubrication or continuous use for extended periods.
Solutions: Regularly add the appropriate lubricating oil and avoid prolonged high-load operation.

How to Properly Maintain a Hedge Trimmer
Before and after each use of a hedge trimmer (whether it is gasoline-powered or electric), you should perform specific maintenance steps.
- Personal Protective Equipment: When maintaining a hedge trimmer, always wear sturdy work gloves made of flexible material.
- Before starting work, conduct a comprehensive visual inspection of the hedge trimmer. Is the rubber coating intact? Do the screws need to be retightened? Or are they actually too tight? If they are too tight, you will notice stiffness when attempting to move the cutting attachments. If you do need to adjust any screws, it is also best to apply a bit of oil and rust protection to them. Are the blades in good condition? Do they need to be sharpened? Carefully inspect the most critical functions to ensure they are working properly and do not require any specific maintenance.
- Inspect the switch lever, switch lever trigger, lock lever, and locking latch.
- After completing work, clean the entire machine, paying special attention to the cutting attachments. Wipe away dirt and moisture with a damp cloth, and remove any stuck leaves and twigs from the teeth. Next, apply care oil or maintenance spray on both sides of the blades, then briefly run the hedge trimmer to distribute the oil on the moving surfaces.
