>>2571859Small engine mechanic here, 9/10 times a quick tune-up will fix your mower. First, let's check the fuel, oil, spark, air.
Fuel: fresh gas present, fuel valve on
Oil: Most are 4-stroke (or electric) by now, so there's a separate reservoir. Correct grade (usually 10w30), amount, and color (gold good, black bad). Too little ruins your machine, too much makes it harder or impossible to start and also run smoky.
Spark plug: Electrodes clean, gap correct, correct numbers on the pulg, ceramic insulator not cracked? A new one is around $6, so many operators simply replace it annually.
Air: Ensure filter isn't clogged with dirt or oil; clean or replace as necessary.
Ensure it starts, then shut it off and tip it sideways, air filter side facing skyward so the oil doesn't drain into it. Inspect your mowing blade/blades for excessive divots or tip abrasion and no cracks or warping. Sharpen or replace as needed and you're all set for another season.
If it still won't start or the engine sounds weird/runs badly once it does, the most likely cause is varnish from the stale gas or some debris is obstructing your carburetor. Quite a few other causes too, so the troubleshooting steps get more complex. Happy to answer further machinery/tool questions too.
As for landscaping, it's hard to truly fuck up.
Consider its current status vs desired state, spend cash or weekends achieving those goals. What specifically do you have in mind?
