Some designs that could be better

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Clutches should not get that hot in normal use. Probably means the operator has been loading the saw down to the point where the RPM has dropped enough to let the clutch slip.
Loads usually associated with dull chains.
When they get hot you usually see dust not chips under the clutch cover.
 
Stihl has gone even further with their one control lever, it has to be the only saw on the face of the earth that requires you to hold the throttle open before you can move the lever to full choke

The Germans like things simple, and the linkage in that lever is simple like a mousetrap. Choke it until it pops, then move it to "no choke" and start it. Sounds like a simple way to avoid flooding the saw. And it's kind of like a manual transmission -- after you've used one Stihl, you know how to run them all.

Put that saw in the hands of some ham-fisted operator who isn't familiar with Stihl and you know what he's going to break when he tries to force the choke on.

Well, idiots can and do break pretty much everything, including crowbars. So maybe we should roll-stamp instructions on crowbars and hammers...
 

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