Husqvarna Automower Cutting Motor & Height Adjustment System Remove And Replace (400/500 Series)

In this video we show you the whole process (minus splitting the chassis open) for removing the cutting motor and height adjustment assembly on a 430X, 430XH, 450X, 450XH, 520, 520H, 550, 550H, 550 EPOS, & 550H EPOS Automower. Most of this process is pretty straight forward and can be done without a trip to the dealer. The one part of this style cutting system that we have seen people struggle with is the cutting height adjustment system. This can easily be reassembled in a way that will cause the adjusting components to bind up and give an error message when the mower tries to calibrate the cutting height or as soon as you try to raise or lower the cutting disc. What causes these issues for most people is the spring pressure on the adjusting screw assembly. If the adjustment assembly is not seated down evenly and correctly against the lower chassis, then you can expect to have issues when the cutting disc is raised or lowered. Husqvarna recommends replacing the bellows (accordion style rubber boot) for the cutting system every 3 years to ensure a good proper seal around the cutting system. If you mower works in wet conditions regularly through the mowing season, then you will want to pay close attention to the cutting system bearing assembly and replace it if you hear any "growling" from the bearings.
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[@SpudsterZZ]

Another RMS video saves the day. Y'all rock!

[@RoboticMowerServices]

Awesome! Glad we could help! The cutting system can be a little tricky because of all the parts that have to work together

[@patricedeberranger5413]

Great video. I failed 4 times with an error message before finding your video and the 5th has been the right one! Many thanks

[@RoboticMowerServices]

Awesome!

[@istvankis4089]

Thank you for really informative video. Please let me a notice: You should remove the mud and other dirt outside before open the unit.

[@MV-sf5ig]

Great information!!

[@robolawnsalon7481]

very informative repair video. Thanks!

[@RoboticMowerServices]

This is something that we know can really frustrate people when they put the mower back together and then they have cutting height errors. Thanks for commenting!

[@HomeDIYSStuff]

Thank you!!!

[@PepperLion]

If I wanted to use lubricant on the cutting motor, what kind of lubricant would I use?

[@scottanderson5290]

I just bought my 450xh automower two weeks ago so I am kind of new to this. Although I have no problems now I like these videos for future reference. It would have been nice if you explained how the top cover is removed other than that, excellent video.

[@RoboticMowerServices]

We show that in several other videos

[@scottanderson5290]

Like I said I am kinda new at this but I will attempt to locate those other videos. Thank you.

[@septicsac]

Adjusted the cutting motor on my 450X when parked and got "cutting height blocked" error, checked and no obvious excess grass, often seen worse. Took out plates and found bit of dog hair around under bearing assembly and cleared same, again easily enough, but error wont clear, just keeps displaying same, any thoughts or can I clear it any other way to see if issue returns?

[@lucavasini7356]

hello, great video, I have an automower 415x and I would like to increase the cutting height to 6/7cm, is there any way to do this? Thank you very much

[@RoboticMowerServices]

At the moment, no

[@joakimo6712]

Nice vid, do you have any of cutting motor on a 310? Or is it the same principle? 😅

[@sindulfocastillo134]

How do you assess the cutting motor is bad?

[@RoboticMowerServices]

If the cutting motor is going bad you will start getting error messages related to the cutting system more frequently. If you've made sure the bearing assembly is working fine and the cutting disk shield can spin freely and that there is nothing jammed or wrapped around the motor shaft, then your cutting motor is probably going bad.