Petter a1 won’t start

My petter A1 won’t start. Good spark, carb okay so getting fuel. When fuel down plug hole it does fire, just unsure why it won’t start. Should i replace the condenser on the mag? The mag has a brass coloured condenser and when i look on stationary engine site there’s a black one which says is for the wiko A mag. Is this the right one? Can’t seem to find any others. Any help/advice very much appreciated

If it fires when you put petrol in the plug hole its likely that the carburetor is blocked inside and needs cleaning.

Maryalice