What happens if I don't change the blade?

Blunt blades tear the grass tips, which then brown, and the mower works harder on every run.

STIHL robot mower blades

Which replacement blades each of the 6 STIHL robot mowers sold in Australia takes, with dated prices from 1 Australian seller.

Most take the IA00 007 4202 (6 of 6 models), from $3.61. Check yours below.

Showing 6 of 6 STIHL models · grouped by part

Steps for the iMOW BASIC replacement blades IA00 007 4202 (18 blades) (IA00 007 4202), the blade 6 STIHL models take.

1Put on sturdy work gloves. Stop the iMOW and turn on the device lock: press STOP, hold STOP until the light strip glows fully red, then press STOP again; the light strip flashes twice.
2Hold the mower by the front and rear grip surfaces and turn it onto its back.
3Press and hold the lever, turn the nut anticlockwise until it comes off, then lift off the blade disk.
4Push the blade carrier in the direction of the arrow to unlock it, take it off and remove all three old blades. Clean the blade disk, blade carrier and nut.
5Fit one new blade on each L-pin, put the blade carrier back on and push it until it locks, with all three arms under the L-pins.
6Put the blade disk back on, hold the lever and turn the nut clockwise, then let go and tighten the nut until the levers click. Replace all blades together; STIHL says they cannot be sharpened.

No reset needed. The MY iMOW app has a 'Check blades' reminder you can switch on.

What happens if I don't change the blade?: Blunt blades tear the grass tips, which then brown, and the mower works harder on every run.
Is there anything to reset after changing the blades on a STIHL robot mower?: No reset needed. The MY iMOW app has a 'Check blades' reminder you can switch on.

All 6 STIHL robot mowers we list, A to Z

Brand names describe compatibility only; FitMatch is independent of STIHL. Fitment sources are recorded on every model page.