I've taken the standard clutch cover and brake off my bigger milling saws (076 and 088) since I started using them for milling.
However I found you still need something to direct the sawdust down and out otherwise the sawdust spray will bounce all over the place and even get into the area under the carby and into cylinder fins etc.
For the 076 I made up this temporary cover but it works so well I have not bothered to make a more permanent one.
The transparent plastic is Polycarbonate which has now slightly yellowed with ages
View attachment 868818
On the 880 I made a more minimal custom Al cover
One issue on my setup is the modified exhaust but the original cover can still just be replaced if needed.
The real beauty of this setup is the sawdust falls out into the exhaust stream which blows it well away from the operators feet so even when milling big logs I never have walk in more than about 1/2" of sawdust.
View attachment 868820
This design is not OHSA compliant as the the exhaust is required to be kept well away from the exhaust stream ie fire risk but 99% of the milling I do is in the same location and its not like I move around from log to log in a forest