You need to check whether your engine is a Tecumseh TC300 unit (I think it is, but find your engine codes marked on the engine recoil cowling/block)
There are lots of variants of the TC300 and like I stated earlier Tecumseh as a company no longer exist. The part number of the Air Vane that was fitted to the majority of the TC300 seris is: 490303. Lat price I have was around £7.00, but you will have to find a second hand one or be lucky and find a dealer with one gathering dust on their shelves.
pleasant, October 2011