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I watched a cleaning video of the M1 Ultra exhaust fan, and it showed two screws securing the fan in place.
However, when I checked my own machine, those two screws were missing.

I contacted xTool, and they considered it a product defect. They sent me a replacement exhaust fan along with screws.
But the screws they sent didn’t fit.

I contacted xTool again, and this time they sent me a complete set including the exhaust fan and its cover.
When I removed the cover, I found that the exhaust fan was still not secured with any screws.

I’m honestly not sure what to do anymore.
Are there supposed to be screws or not? What is the correct configuration?
 

For reference, here’s the support page with the cleaning video I mentioned:
https://support.xtool.com/article/1706

I've also attached two photos:
– One showing the two spots where the screws should go
– Another showing the screws that xTool sent me