Bought this a while back intending to work on it but will never prob get the time so may as well split it as I am sure others may benefit from it.
Its off a cylinder and I suspect it have popped the lower crank seal but other wise is on OK condition, gearbox tiller, coils, carbs etc all seem fine.
Its really old! think its this model Mariner - 20 Boat Engines for sale in Lancashire, North West :: Boats and Outboards
PM me is you need anything.