I bought a Mccullough Trimmac 210 petrol strimmer off eBay. The owner
said it hadn't had much use in recent times so I changed the fuel. It
said to use 40-1 so I put 100ml of oil,which I got free with another
petrol tool, into 4 litres of petrol. It started ok and worked for 5
mins but then started making slightly unusual noises. It eventually
conked out and doesn't start now. PLEASE HELP. Hope I haven't f---ed
another strimmer up.