A833 Four Speed Gets Stuck in Reverse

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STOP!

cliftt makes a good point;(thanks for the swell pic)
>However,Look at the picture. If you screw that spring retainer out too far the ball will will fall into the box making for a very bad day. I have rebuilt hundreds of those boxes, and have never seen that retainer make trouble, unless there was no gasket under the head.
If you decide to change that gasket or need to install a thicker one, first remove the cap-nut, the spring, and fish out the ball with a pencil-magnet. Then yo will not have a bad-day.
>But now, on the same picture IS the trouble spot; the interface between the 1-2 shift lever and the reverse lever. When you push up on the cover, you are increasing the clearance between those two, to whatever maximum is possible. If it is not enough there is an alternate reverse lever that you can obtain and sub in, but the entire box has to be disassembled to install it. The guy who builds the box is supposed to check this prior to disassembly, then again before shipping it. If all the relevant parts are original, I have never seen it

How about unscrewing the plug to relief the tension on the detent spring?