Hi Wilbur, I will try to answer your questions but it seems like the governor has failed.
Questions 1& 2 throttle should be wide open with the motor stopped as soon as it starts the governor should close the throttle
Question 3 removing engine can be a pain if the pulley doesn't come off easily, pulling, after that it is just nuts and bolts
Question 4 don't worry about the choke at this stage, it has nothing to do with the problem at the moment
