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For petrol lawn mowers it is possible that the engine oil reservoir has been filled too high and the engine is burning off the excess, causing the white smoke.
This has given me the ability to not only recognise what makes a good lawn mower, but also to help you choose the perfect garden tool for your specific needs and requirements.You can often diagnose the issue by the colour of the smoke, and fix it before any major problems start. If you are still experiencing the black smoke you may need to adjust the carburetor to increase the airflow. It is possible that a clogged air filter can be the main cause of this and is preventing air from getting through to the carburetor. Over the years, I have honed my skills in writing informative articles and creating helpful videos for various blogs and publications.
Over the past 10 years, I've been testing and reviewing a wide range of lawnmowers, including battery cordless, electric, petrol, and robotic mowers. It can also disturb the airflow going into the engine as if the engine cannot get enough oxygen it will struggle to ignite, which can affect the efficiency further down the line. This problem effectively sucks the mower down onto the lawn providing the opposite to the desired effect. This can be as simple as the lawn mower having run out of fuel or battery, or in the case of electric mowers, the cable coming out of the socket.As a seasoned expert in the field of garden power tools, I have dedicated over a decade to working with and reviewing a wide variety of lawn mowers.