I've noticed that the stop bump has a groove around the shaft in which dirt can be trapped:
I've removed the small grain indicated by the green arrow by sucking it with a vacuum cleaner, since I think that in this kind of situations compressed air can stick dirt even deeper. The nozzle of the vacuum cleaner is made up of plastic, so it shouldn't scratch the shaft if it touches it.
Here is a picture in which you can see the imprint of the writing of the bump on that sort of metal washer that it mates to, just to confirm that sometimes I bottom out the rear shock:
IMO it's better to keep that groove clean.
My Italian Husky doesn't have such groove and in my YZ250 the bump is worn so I can't tell exactly whether there is an intentional groove or if it was created using the bike.
I've removed the small grain indicated by the green arrow by sucking it with a vacuum cleaner, since I think that in this kind of situations compressed air can stick dirt even deeper. The nozzle of the vacuum cleaner is made up of plastic, so it shouldn't scratch the shaft if it touches it.
Here is a picture in which you can see the imprint of the writing of the bump on that sort of metal washer that it mates to, just to confirm that sometimes I bottom out the rear shock:
IMO it's better to keep that groove clean.
My Italian Husky doesn't have such groove and in my YZ250 the bump is worn so I can't tell exactly whether there is an intentional groove or if it was created using the bike.
