Fellas I spent yesterday cleaning down the rest of the 3HP Briggs. Underneath the starter cover was chokas with gunk. The cooling fins on the barrel needed picking out with a screw driver then a good hit with a tin and a half of degreaser. The back of the flywheel was also full of gunk. I tried as best as I could to keep the electrics dry but obviously not good enough as now there is no spark.

Wires from the coil run into the engine casing and I am at a loss as to where to start in finding the issue. I left things in the sun today to dry out.

Any pointers on where to go to here?