On my Cab Plus 1988, passenger bucket seat lever to slide seat forward just snapped off, see photo and scroll to the right (plastic cover is removed for clarity).
[/QUOTE]
*****************************************
OK, fixed it. I used a 2-inch flat coner brace from Home Depot.
Here's the part that broke off; I did bend it a tad over the years as my kids kicked it in, so that likely accelerated its breakage.
Here I'm holding the corner brace over the remaining seat lever part.
I ground down the one "arm" a little to fit into the gray plastic handle, and tapped it in.
I drilled two 1/8 inch holes in the remaining part of the lever, to align with the two holes in the corner brace (I slid a piece of wood in behind the broken lever to protect the seat from the drill bit). Then I sanded the corner brace a little and spray-painted it black.
Holding up against the broken part
I slid the gray cover on before installing the rivets because I already had the gray plastic handle tapped on. Photo with the two 1/8 inch steel rivets in place but not squeezed tight yet.
Photo after installing the rivets
I painted the rivet heads, and here's the final result.
**********************
Later, I added a second L-bracket, the single L-bracket was bending occasionally, and needed to be reinforced. So now there's two L-brackets riveted to that part of the seat bracket instead of one. It looks almost exactly the same.
Earl says we have to upload pictures: