Put in a new plug. Not a old one that has been cleaned but a new one. I do not know what it is about honda 4-strokes, but I have seen many many times where there is spark at the plug, but no fire. Change the plug to a new one and it fires right up. I started buying plugs by the box of 10. Seems to happen more with trikes that are not ridden as much
ATCnut
82 185s - sold
83 200x (hopped up)
84 200x (stock)
84 70 (lost this one to the DMV)
85 70 (soon to have lights, a foot brake, and CDI ignition)
84 200es (parts trike) - sold
85 350X (the best)
85 350X (siezed motor, dream of a poweroll kit someday)
85 250sx (frame was trash, got parted out)
86 250sx (the tractor)
86 250sx (a nicer tractor)
86 250sx (an even nicer tractor)
87 200x (parts trike, its really rough, a dog was chewing on it for a while)
87 250es Big Red (the tank!!)