Thanks, it's getting there has been a steep learning curve as Ive not pulled one down before, looking up as much as I can on Briggs..Only stuff up so far was working out cc,I had already pulled it down before getting bore and stroke as there seem's to be two of this kind of engine from Briggs both have 65mm bore but one is 148cc with a stroke of 44.4mm, and one is 158cc with a stroke of 47.5mm ,they seem to have got 158cc with a stroker crankshaft of sorts...but alas this one is the plain jane 148cc engine by the looks of it not that it matter's as its in great shape.....
