Installing the grass cutting collection box Lift the rear part of the box and insert the hooks into the slots in the mower body. Then lower the rear part of the box into the correct position. Warning: The engine must be at a standstill when installing or removing the grass cutting collection box. Do remove or install the grass cutting collection box with the engine running. Checking before starting 1) Checking motor oil The engine must be at a standstill and the mower must be placed on a fiat surface. Unscrew the dipstick and wipe it with a clean cloth. Insert the dipstick and upper and lower marks. If the oil level is lower than the bottom mark, add enough oil to bring the oil level to the upper mark. Note: Do not allow the oil level exceed the upper mark. 2) Checking fuel Use unleaded petrol only. Under no circumstances should you use a mixture of oil and petrol. Before refueling, ensure that the surface around the filler hole is free of any impurities, dust and water. Note: Always refuel in a well ventilated place and with the engine at a standstill.