I have had this specific lawnmower since 2016. I use it amateurishly 2-3 times a year for an area of about 1 acre. The thing is, I always cut the grass when it is huge and essentially it is like I am using it on a 5-6 acre area. It has not presented any problems all these years even though the use I give it is careless and without any maintenance at all. I changed the spark plug this year after 8 years. It is extremely honest for its origin and its price. It is essential to mix fuel with high-quality oil in the right ratio. In this case, the engine will have no problems. I am very satisfied that it has lasted so many years without any damage.