Timing Mark Indicator; Can't find it!
 

I'm trying to adjust the timing on an 86 with a 305, but when I was looking for the timing mark indicator on the flywheel, I can't find it. Is it supposed to be this hard? Or could the it be missing?
Thanks everyone.

It can be difficult to spot if its dirty. It may be easier to go under the car and hand rotate the crank until you find the mark. Clean it up and maybe put some whiteout in it so you can see it better when you are running....