LS160 Skid loader brakes

[Harry in Ky]

LS 160 with brake issues. Mechanical brakes. All that's visible is a ratcheting hand lever connected to a rod. Everything else is in the chain box. Anyone have any experience with the adjustments/procedure? Assuming it's done on the inside, but the diagrams in the parts breakdown don't show anything obvious.
Also have a park brake warning light on with no visible wires or switches on or near the brake handle or visible linkage. Does anyone know what controls that light?

 

[RickB]

Brake operating arm is splined to the brake shaft. Remove linkage and arm and re-index arm on shaft to create more shaft rotation.
Not sure about the icon, was thinking
G there's a switch in the lever assembly.

 

[Harry in Ky]

As simple as a splined shaft. Sounds a lot less complicated than I had imagined.
Not sure what to make of the brake warning light though. We may just have to live with that.