Conversely, I have a 15 year old lawn-boy that gets used 1 – 2 times per week, cutting about 16,000 square feet of grass at varying slope. I have changed one (yes 1) spark plug and one float needle in that time – and I never drain or treat the gas.
I would also lay a bit of praise to the sweet, sweet 2 cylinder, 2 stroke, 350 cc engine of my old Yamaha R5C, - Yes, labor intensive - But it would run the balls off of most bikes three times the size.
And - that blue haze does wonders for mosquito control!!!