Winter and that white flakey "stuff" is fast approaching. Be prepared.
One of the most important steps in winterizing power equipment is to begin with a thorough service-maintenance tune up.
Start and warm up the engine for at least 5 minutes. Drain the oil while it is still hot and has any settlements mixed up and suspended to assure all is removed. Refill with a major brand of the correct oil viscosity for when you'll be putting the engine back into service. Clean and service or replace the air filter, replace the spark plug, sharpen the blade and clean up the mower. Apply a WD-40 type product to control cables, wheel bushings and nuts and bolts. All the routine maintenace that should be done after every 25 hours of operating time or twice per year.
For more on routine maintenance see my pages on maintenance and blade sharpening. You can find links to them from my Front Page.
The most important part of winterizing equipment is caring for the fuel system. I know for many it's hard to accept that fuel can turn on you so fast. It was for me for some time also. Those of us who grew up with the factory made asphalt shredding muscle cars of the 60's sometimes like to hold on to old ideas. Todays fuel is no longer gasoline but "Designer Motor Fuel". It's intention is to enhance cleaner burning engines and as such is formulated with properties which are very unstable and begin to turn into something else very quickly. The industry standard is that 30 days old is, history. Buying just enough to get you through 30 day periods is doable, but what to do when it comes to winter lay overs? There are two ways to avoid the problems caused by the varnishing effect of stale fuel.