I need to swap out a sprocket seal, does the wood screw trick work there?
That one requires some finesse, in my experience. I've done it successfully 1 time, and not so good 2 more times.
What I discovered was: there are some engines that have a slightly-flanged seal in the final-drive. Those were the trouble ones. I got worried enough about the result after removing those 2 that I pulled the engine to do it over.
The 1st time I tried, not successful: it bad a (barely) flanged seal, which I have seen in some seal kits, too. My own K2 has one of those after its last rebuild in 2013.
The 2nd time I was successful: it was on a 750K4 (around 2015).
The 3rd time I wasn't so lucky, as someone had replaced the seal before me and glued it in, but good, using the old-time FelCoBond gasket adhesive. You can't miss that stuff: it looks like Pliobond when cured, and grips like it was welded, or something? This one was recently, because I still feel the sting.
Is there a special trick I'm missing about this one?
