hmmm, i;m not sure how to describe the method, it goes on the reverse of taking it off, if you noticed how it was and put it back the same it should be ok, if it;s not working right then it may need explaining.
from memory no, you need to line up the plate on the back and put the two top screws through, fit it to the motor , making sure the spring is in the right place, then screw in the center bolt, then the top two.
squizzy thanks for the help i got destracted by other(easyer to fix)mowers. i hope i have learned from the experience. got a tecumseh going today. have to turn on my victa brain. that starter has got me. when pulled it wears the plastic i do have all the other parts, plus more.