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How to Replace a Lawnmower Blade - Bosch

Over time the blade on your lawnmower will perish, as it’ll become blunt from being used during the grass cutting season and may even have become chipped from hitting stones and pebbles in the process.

If you want to give your lawn a good trim but the blade just is not in a suitable condition, don’t panic and think that you need a new machine because buying the replacement and fitting it yourself is extremely simple!

Below we have detailed just how easy this standard maintenance task is. We will talk you through the process in this article, and before you know it you’ll have a new, sharp blade on your mower ready to tackle your garden (no matter how unkempt it may have gotten over the winter!)

This video shows an example on how to remove or replace the part on a typical machine, some models may be different but the procedure should be similar.

  What You Will Need:

  • Blade
  • Heavy Duty Glove, Cloth or Screwdriver

  Step 1 - Safety Advice

Safety First! Please ensure that you have disconnected the appliance from the mains before starting any repair and due to the sharp edges exposed we suggest suitable Safety Gloves are worn to help prevent injury.

  Step 2 - Removing the Blade

Before we start make sure you have enough room for when removing the blade - you’ll want to first tip the lawn mower carefully onto its side. From here you can then begin the removal of the old blade.

Please Note: We advise you to wear a heavy duty glove - or a thick cloth to help protect your hand.

When unscrewing the blade you need to brace it, otherwise it would continually spin as it is connected to the motor spindle. So with your hand protected with a glove or cloth you can now begin to unscrew the bolt with a spanner.

eSpares Top Tip:

If you are unable to get a hold of a glove or cloth you can simply take a screwdriver and, holding it in place in the hole above, you can unscrew the bolt as it braces the blade to stop it from turning.

  Step 3 - Fitting the Blade

With the blade removed you can now replace it with the new sharp blade, When fitting the blade always make sure to follow any instruction on the blade itself, as it should state which side should face the grass. If this information is not present then you can simply refer back to the original blade.

With the nut in place you can begin to hand screw the blade in place - using a spanner to then finish and tighten the blade. Once the blade is secure you can then put the lawnmower back upright and begin to give your garden a trim.

Some people may continue to use the blade even after it has become blunt - but as you can see in this article, changing the blade is a simple process which once done means you can continue to use your lawnmower to get a quality cutting performance. Keep your garden grass short and looking neat and tidy, ready for those summer Barbecues and relaxing times in your garden.


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