I looked at a box I have on the bench, that arm is swedged onto the brass or bronze bushing that carries the shaft thru the case, doubt it will be evident how to position it - you might be able guess close with fingers crossed by comparing to a good one with things in neutral - here's pics of boxes I have

Bill


Moved over to the Passing Lane

"When we tug a single thing in nature, we find it attached to the rest of the world" ~ John Muir
"When we tug a single thing on an old truck, we find it falls off" ~ me
Some TF series details & TF heater pics