Take the clutch cover off and look at the adjuster in the middle of the outer plate, If it is screwed all the way in then undo it most of the way. Then offer up the kick starter cover and see if it will go fully in, If not then is the adjuster for the bottom of the clutch lever screwed in all the way? If it is then unscrew as far as is sensible and try again., If it still wont go all the way home then you need to shorten the pushrod. If you do that then get the cut end cherry red and quench in water. You look to have an electric starter fitted but that should not change any of the above. It is no good asking for an exact figure as who knows what has happened to the bike in the last 70 years?