Tbone is wrong again. I removed the inspection cover tonight.
The ratchet arm spring was present. The ratchet arm looked alright. It would engage the shift cam and move it one detent to first gear and then back to a neutral position although I don't really know if it is actually neutral.
Once it had moved the shift cam back one notch to the neutral it wouldn't catch any more of the posts in the cage on the shift cam to go further up the gears. I could manipulate the ratchet while holding in the clutch and rolling the bike backwards and forwards and it shifted up a couple of gears.
Then I had to hold the clutch in and roll the bike again to get back down to first. Then it would shift to the neutral position again and back to first but no more. The teeth on the ratchet arm would move back and forth between the posts on the shift cam cage but it would not advance the shift cam.
I tried adjusting the clutch and buttoned it back up and rolled it in the street but no cigar. First and neutral is it.

I must be missing something like the shift cam is not advancing far enough to allow the ratchet arm to catch the next gear.
It looks like I got lucky again.

I guess now I need the clutch basket puller.