I would (1) fully charged batt (2) hold the coil secondary wire (dist end) 1/4" from the intake (ground) (3) have a helper crank it with the ign key & see if you have a healthy spark (ign2 crank circuit) (4) have him let off the key back to "on" position (5) you jump the SR with a wrench in 1 hand & see if the coil wire has a good spark in your other hand (ign1 run circuit) (6) if OK then check/clean the plugs (7) see if it will start with proper amount of choke/minimal amount of pedal pumping (you're familiar with what it normally needs). Holler when you can