To gain access you will need to undo :

The small air feed hose.. 10mm Hex bolt..(like a horn bracket..just swing bracket)

Large feed hose .spring clip (tool required)

2 x 10mm hex bolts.. retaining airbox

Remove all of those and the air filter casing can be lifted free
There is a moulded spike that retains it onto a bracket at rear of engine

Next page: Air Filter element