gizmo on scoring a great little Model 45 there mate.
She's an oldie, and if you can post the complete set of numbers stamped into the air cowling on the Briggs, we can tell you the date that it was manufactured; that will give us the approximate age of the chassis.
You should consider replacing the red plastic plug that is missing from the chain case cover...that will stop grass and dirt entering the chain case...
Can you please also take some pics from different angles and a couple of the chain case with the cover removed and some close-ups of the sprockets where they are not covered by the chain.... this will enable us to give you some advice on the condition of the chains and sprockets.
