Yes Grumpy - I have been following that tecumseh thread, sure is a strange one.
The mower was tested for spark with no filter when I first fired it up.
If I replace even the cover without the filter the engine runs so rough its not funny, take the filter and cover of and its all fine.
Smoke comes out the breather which made me think it might be full of oil. I might be wrong though. The mower now has the correct amount of oil in it.
Hope that makes sense
