Undo the circular clip on the air intake - use a screwdriver to do this
Undo the second circular clip on the air intake with a screwdriver
Undo the 4 Phillips retaining fixings
Carefully lift away the air filter box
Clean off any debris on the surface of the filter. Replace with a new filter if heavily contaminated
Check air filter box for debris. Clean out if required. Replace the air filter
Reassemble the air filter housing
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