hi jack gizmo and odk members
thanks for the comments, jack the reason I think it has been re-engined is that it has 9/16 nuts as spaces on the mounting bolts between deck and motor, and the engine is slightly off-set , the spark plug is not exactly dead ahead ????.
amazing this is the economy model when compared with todays economy models , bunnings 16inch sprinter briggs motor , lawn beetle ect , theirs no comparison.
maybe my Kirby motors are a bit to old for her, I have a later model Kirby with the plastic tank I could use , may be I should just leave it with the briggs as it runs like a clock , jack thanks for posting the supaswift add .
cheers2damo