How to examine and change a lawn mower blade

This is an article on how to check and replace a blade on a Husqvarna lawn mower. If you are looking for information on how to check and replace a blade on a Husqvarna ride-on mower, click here.

In order to keep your Husqvarna lawn mower in a good condition, you have to examine the blade and even replace it if its damaged or broken.

How to examine a blade on a lawn mower

In order for your lawn mower to cut optimally, make sure to examine the blades regularly.

WARNING: Use protective gloves when you do maintenance on the cutting equipment. The blade is very sharp and cuts can easily occur.

CAUTION: To prevent accidental start on a petrol-powered lawn mower, remove the ignition cable from the spark plug.

CAUTION: To prevent accidental start on a battery-powered lawn mower, turn the safety key to 0, remove the battery and wait a minimum 5 seconds.

1. Examine the cutting equipment for damage or cracks. Always replace a damaged cutting equipment.
2. Look at the blade to see if it is damaged or blunt.

NOTE: If the blade is not correctly attached, there is vibration in the product or the cutting result is unsatisfactory.

Damaged blades:

How to change a blade on a lawn mower

1. Lock the blade with a block of wood.
   
2. Remove the blade bolt and spring washer.
3. Remove the blade.
4. Examine the blade support and blade bolt to see if there are damages.
5. Examine the engine shaft to make sure it is not bent.
6. When you attach the new blade, point the angled end of the blade in the direction of the cutting cover.
   
7. Make sure that the blade is aligned with the centre of the engine shaft.
8. Lock the blade with a block of wood. Attach the spring washer and tighten the bolt and washer with a correct torque specific for your lawn mower. You can find the information in the operator's manual.
9. Pull the blade around by hand and make sure that it turns freely.
10. Start the product to do a test of the blade. If the blade is not correctly attached, there is vibration on the product or the cutting result is unsatisfactory.