G'day
I have never seen under a scout before, but here is the brake from a cox compact tractor 28inch cut.
![[Linked Image]](https://www.outdoorking-forum.com.au/forum/uploads/usergals/2014/11/full-4730-18406-brake_cox_2.jpg)
To adjust it, tighten or loosen the nut and spring, so that when you move the cutting lever to stop cutting, the brake pad should be feathering on the pulley to slow the blade carrier plate down.
I disliked the brake on my two tractors so much, that I removed them both.
I certainly don't recommend doing that.