GreenWorks G-MAX 40V Lawnmower Replacement Blade 460mm

A:

Replacing blades will depend on how you are using the lawnmower, if the blades are in contact with hard objects like rocks or tree stumps there is a higher chance or them becoming dented, chipped or damaged, in which case they will need to replaced. The blades should be regularly inspected and sharpened after approximately 25 hours of use.