Help with magneto install

[Icenine]

It runs! The OC3 starts pretty quickly cold, a few cranks and fires right up. Once hot, it is very hard to start. Is this a timing issue? Or a case of a starter issue??

[Blake Malkamaki]

Does the starter turn it over ok when hot? If so, I would say it's not a starter issue. Maybe your valve clearances are too tight?

It runs! The OC3 starts pretty quickly cold, a few cranks and fires right up. Once hot, it is very hard to start. Is this a timing issue? Or a case of a starter issue??