My method is to put pencil into the carb top tube & compress the spring over/down it into the top. Remove the pencil & hold the spring there with your finger.
Then with my 2 two tie wrap tool loop that fits over the top of the carb top & spring hole to hold the spring in the carb top.
Then place the carb top over the carb slide & when the spring is directly over the slide move the tie wrap. The spring will fire into the slide. Job done
Btw, it's a lot easier doing it than typing it
