Well that would like do it.
Going to be an interesting fix too. Is there any bolt protruding to get a grip on to remove the old bolts?
Wow! Do you have pic of this? Do you know what, if anything, that it hit?
Guessing here: I think it may have hit a sprinkler head concrete protection ring. We have some sprinklers on the edge of our property line, and the next door neighbor’s lawn mower crew may have tipped it upwards in the air.
Sadly, no grip on bolts. It’s a clean break. That’s tonight’s project to figure out what I can do.
1 Like
Reach out to support. I’m sure they will help.
2 Likes
With any luck they protrude through the back. That piece they screw into comes off with a 10mm socket if memory serves. Not sure what “Yarbo Wrench Number” that is. 
1 Like
This is such a critical point, as a newcomer to robotic mowing. It’s a very different mowing philosophy and takes time to fully grasp and change one’s expectations. I think the manufacturers should take it on themselves to better educate their consumers on this.
4 Likes
I think it’s implied with micro mulching but couldn’t hurt to have a tutorial and informational dialogue walk through when connecting the mower for the first time. Perhaps @Yarbo-Forum could take that to the UX and UI team.
2 Likes
And add it to marketing material. Once I have the unit on my property, it would be very frustrating to learn at that time about micro-mulching.
2 Likes
That’s fair
2 Likes
Not everyone does research the same and some may not do much research at all before purchasing.
2 Likes
Ok, it turned out it was the nylock nut that hold the disc mounting plate in place on the end of the motor shaft somehow came loose, causing the disc to be left in the middle of the yard. The sheered bolts I thought were there turns out were nothing.
Getting the “hub” out of the disc was a bit of a pain though. It was wedged in there and required several minutes of prying on it (and one broken screwdriver tip).
I evenly re-seated the hub onto the end of the motor shaft via a deadblow hammer, then held the hub in position while I tightened the nylock nut. Pics are below.
2 Likes
Nice. Simple fix then.
1 Like
It’s unbelievable that with all the issues with the M1 that Yarbo would devote so much time to a new Pro version rather than fix the M1 issues for the customers that supported its start up. Now that the Pro unit is out, who would think that it solves all of the problems of the M1. Also, the term more complex lawns is so disingenuous and vague. Please define “more complex”. Every yard is different and has its own challenges. If you don’t want to provide a real replacement program then fix the issus with the M1 version. It’s October and the new disk/blade fix started in April. That seams like a long time especially when other companies have it figured out.
7 Likes
Sadly, the other disc Nylock nut came off the spindle threads and I had to do the walk around the yard looking for the missing disc. This is time #2, but with different spindles. Is there a replacement schedule for these as it appears they come off from time to time? Also, it’s been some time since any update on the upgraded M1 Discs. Any update @Yarbo?
2 Likes
That sounds unusual. Do you have a ticket? If not I’d suggest opening one.
1 Like
That does sound unusual to me.
I have mowed all summer without loosing a disc.
I do however remove my discs from time to time to facilitate cleanup and blade changes.
In the absence of torque specifications, I usually tighten them until my eye teeth pop and half a round more.
(That’s a joke, don’t break your spindles)
1 Like
Is that one grunt or two?
2 Likes
It’s 3.141592 grunts. Followed by pie.
2 Likes
Yeah, I probably should open a ticket. It’s minorly annoying to wander around, especially when the temps here in FL are at Iguanas-falling-out-of-trees temp. 
But I agree, something is a bit off. This side spindle is the one that always complains it’s got the blades clogged, but when I pull the mower off, it’s got zero blockage. I did note upon further examination into the disc hub itself that it appears the nut retaining “pocket” is 1/8” off from being aligned. I wonder if the nut, when it was backing off, wallered into the plastic material.
1 Like