I found another cold start video that i made last winter but forgot to upload, in this one the throttle isn't stuck frozen as in the previous video, so the engine is easier to start if i give it a bit throttle, this engine does not have any kind of cold start device that advances the timing or increases the throttle when cold, so that's why it's hard to start without additional throttle, and as soon as i let it go back to idle too quickly when cold, it will stall, that's because the governor is not fast enough to "meet up" the RPM drip.
This is a prechamber-diesel, so it would never start without a pre-glow like a direct injected diesel can do. but it did only need one pre-glow cycle, so it will probably start in even colder temperatures with several glow cycles.
the squeeking noise is the CVT fan motor that has bad bearings.