To discourage speeding. The national speed limit had been reduced to 55 in an effort to conserve fuel during an oil crisis.Wonder why they went to the 85 MPH speedometers in 80?
Those screws backing out is somewhat common on '80 and later speedos and tachs. Never heard of it happening on an early speedo until now.I had an XS2 that I had bought new in 72. The screws holding the dial face backed out and stopped the needle from doing a full sweep.
Memories.
John in Texas