Re: 1985 Force 50 no spark and parts question.
It is difficult to see in the photos: But the carb is suspect due to the poor workmanship on the original bowl bolt repair. SO, is there a small brass tube inside the larger brass tube? This tube feeds the low speed circuit. If it is missing you will experience very difficult starting and failure to idle.
If the tube is there, did you clean it and the low speed circuit? Again, if the low speed orifices and needle are clogged or restricted, the engine will not run slow.
At the carb butterfly--not the choke plate-- you will see several small metered holes in the top of the carb casting. These are the metered idle and off-idle holes. Clean them with a soft copper wire and do not force it or you will enlarge the holes. Use a small pipe cleaner or again a soft piece of copper wire to clean the brass tube. Remove the low speed needle and clean the hole. I like to use WD40. It seems to dissolve most crud.
Oh, I forgot: You need a thin flat sealing washer both inside the bowl and outside it. Careful, too thick and the bowl rim will not seat on the cork gasket in the carb casting perimeter.
Post another photo of the needle seat area of the carb. Typically a brass seat housing screws into the carb casting. Inside this seat is a rubber needle seat and usually, a copper washer will stick inside the carb casting. Simply pull the washer out with a small hooked tool of some sort. If the carb has a pressed-in seat, you have no choice. You need to pull it out by threading in an appropriately sized screw and prying it out--damaging it beyond repair. However, if it has a pressed-in seat, the needle will usually have a rubber tip and again, usually, only the needle needs to be replaced.
