Thanks for your patience grumpy.
I didnt get much of a chance to test the mower but I did give it a short go after confirming I put the gaskets in the correct position.
- The mower didnt start with the air cleaner and airbox cover in place.
- I removed the airbox cover and the engine started.
- I then removed the air cleaner and replaced the cover (full screwed down) and it started.
The air cleaner was very clean however upon realy close examination it appears someone has oiled the cleaner and not just the prefilter. Could their be a reason for this or perhaps a fault in manufacturing?
Lastly, I bought a new filter last night so I will see if that solves the final problem after work tonight.