Trimmers Trimmer Tune Up

Published on February 20th, 2015 | by Jacks


String Trimmer Maintenance Routines

From Husqvarna

To optimise the life and reliability of your Brush Cutter, it’s important to service it regularly. Here are a few points that will help you bring order to your machine maintenance.

Below are Daily Routines, Weekly Routines and Monthly Routines:

Daily Routines:

  • Clean the outside of the machine.
  • Make sure the harness is not damaged.
  • Make sure the throttle trigger lock and the throttle function correctly from a safety point of view.
  • Check that the stop switch functions.
  • Check that the cutting head does not rotate while idling.
  • Clean the air filter. Replace if necessary.
  • Check that the guard is undamaged and not cracked. Replace the guard if it has been exposed to impact or is cracked.
  • Check that the blade is well centred, sharp, and is not cracked. An uncentred blade causes vibrations that can result in damage to the machine.
  • Check that the trimmer head is undamaged and not cracked. Replace the trimmer head if necessary.
  • Check that the locking nut is tight.
  • Check that the blade’s transport guard is intact and that it can be secured correctly.
  • Check that all nuts and screws are tightened.

Weekly Routines:

  • Check the starter, the starter cord and the return spring.
  • Make sure that the vibration damping elements are not damaged.
  • Clean the outside of the spark plug. Remove and check the electrode gap. Adjust the gap to 0.5 mm or change the spark plug.
  • Clean the cooling fins on the flywheel.
  • Clean or replace the muffler’s spark arrest screen (not on mufflers with a catalytic converter).
  • Clean the carburettor area
  • Clean the cooling fins on the cylinder and check that the air intake in the starter unit is not blocked.
  • Check that the angel gear is 3/4 filled with grease. Fill if necessary using special grease.

Monthly Routines:

  • Clean the fuel tank.
  • Clean the carburetor and the area surrounding it.
  • Clean the fan and the area around it.
  • Check the fuel filter and the fuel pipe, replace if necessary.
  • Check all cables and connections.
  • Check the clutch, clutch springs and the clutch drum with regard to wear. Replace if necessary.


Following these simple maintenance routines will keep your string trimmer in top shape and prevent damage from happening. Looking over your string trimmer on a daily, weekly and monthly basis will prepare the equipment to be ready anytime you may need it.

Jack’s Safety Tips: Before servicing or repairing any power equipment, disconnect the spark plug and battery cables. Remember to wear appropriate safety glasses and gloves to protect against harmful chemicals and debris. View our Disclaimer.

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About the Author

Jack's Small Engines has been providing parts for outdoor power equipment online since 1997. We also run a service center for outdoor power equipment like riding mowers, snow blowers, generators, chainsaws, and just about anything else.

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