I’ve just scored this bike, a Honda 350\4, 1972. Tried to start it this morning ( electric start), nothing, nada, not a sausage, bugger all. Fuses look OK and the battery under the sidecover appears brand new. Where to start? Wiggles will probably say it’s a faulty condensor, maybe so!
It’s obviously the muffler bearings. They are clearly not concentric with the fleevy rod.
This looks like an awesome project, will be excited to see you bring it together!
Of course, and blocking the phlygmantasia. Always the obvious !
You’ve got the polarity of the side cover battery the wrong way around, common trap
Tried it the other way, but it keeps on falling over. May need some fettling.
I’d say it’s your plug gap. As in the gap from the plugs to the other motor bits.