Mountfield Hp 425 Lawnmower will not start?

Recently purchased this lawnmower, stored outside for a number of years.The mower did start, however it has failed to start.
I used Easystart and after a bit of effort it started , lots of white smoke then stopped after minutes.
Engine on this machine is a Honda.
It feels as if it lacks something when trying to start it( i have other lawnmowers.

Thanks