Cobalt,
Interesting. That got me reading the POH for A and C's, which I rent. What you didn't mention (which is in ours, at least) is it says to operate the throttle accelerator pump 2-3 times first.
The Robin I used to fly had no primer and was started exactly as above. I'll have to try it. Though I've found the POH warm start procedure doesn't work...
Tim