The answer to this depends on the owner, the work, and any extenuating factors. If the mower is properly maintained and nothing out of the ordinary happens to it, you can likely expect yours to last up to 1500 hours of use or more. In this case, if you only have to use it two hours per week, you would get about 750 weeks out of it. Again, this would be under ideal circumstances. If, on the other hand, you do not take good care of your mower, or you use it for many hours each week, you can expect a shorter life expectancy.