Make sure you tilt the mower on the opposite side to the filter. Wait until it has cooled down and definitely make sure that you disconnect the spark plug.
Some have oil breather pipe .. tip sideways and jam upright to the other side.
Clean whem soaked wet underneath. Paint scraper useful .. Helps airflow underneath.
Right will have a look tomorrow as to where air filter is... I'm just one of these people who get the thing out and check for oil and petrol and off we go! Any problems and it goes to the mechanics. Anybody can guide me to a lawn mower lesson on internet?
dennis it wouldn't tell you how to clean it without losing the oil or petrol and I'd have to start looking for instructions in the shed so asking here is quicker. It is a rotary cutter TonyV
cocc - just need to get mower of ground so you scrape the the underside of deck with plastic scraperneed to - maybe need to wet with water and detrgent