How to clean the sculpfun S10 lens and nozlle

How can i clean the sculpfun S10 lens and nozzle??

I did as Melvin explained, but it went completely wrong for me, after I did, I had a broken lens, that’s why I ask the question again

There is a video on the whole process here: Guide to mechanical adjustments and maintenance - Diode Laser Wiki
The only thing that failed at your attempt was the o-ring that was not sitting correctly. But if you stick to the video, this won’t happen a second time, I guess. You just need to make sure that you hold the nozzle upright after placing the o-ring inside. Then screw the module slowly in, the o-ring can’t move into a wrong position in this case.

Thanks Melvin