I put a brand new ignition coil on it, new spark plug, fuses are good wirings good, carb is clean. I'm thinking the magnetto. Any help?

I believe that the cat has a suzuki motor and they both had problems with the magnets falling off or just loosening up and moving in the flywheel. I just did my 2002 suzuki, had to replace the flywheel , you will not find a used one because this is very common, they glued the magnets on the inside and they tend to loosen up. If you buy used it may just be the same s%%t diffrent day. If you order a new one, the magnets are now encased and won't move or fall out. Some people have had it done on warrenty, but the dealer has to do the work depends on dealer??? If you do it yourself just take the left side cover off , the flywheel will have to be pulled with a special puller or you will most certainly bend the crankshaft (puller is $50 } I can rent u mine $10 plus shipping and deposit. The cheapist place I found for the flywheel wsa at river rat motorsports in az $270.83 with free ship #32102-38f01 make sure it is not 32102-38f00 that is the old glued on magnets there are still some old ones out there