Won’t start

With the choke plate open.
Using your hand on the throttle lever.
Rotate the throttles open.
As soon as you move the throttles, fuel should come out the accelerator pump nozzles.

easier to see in a photo without the choke plate
upload_2020-5-25_13-41-54.png

If not, check the pump arm, cam, and lever to be sure they are moving with the throttle.
If so, then its either pump check valve or no fuel in the bowls