Windsor carrier

[mudeng]

Can anyone help with identifying the purpose of these two controls alongside the drivers seat.
Could the small cranked lever be the starter pull lever, as I believe these carriers had a cable attached to to a lever on the starter motor switch.
The second, longer one, with a black know, was this something to do with the differential brakes???

Again, by way of interest, ther is a mech screen fitted to the lower half of the air inlet opening, is this original???

Thanks.

George