Usually, when it comes time to store them, we simply stow them on the floor or the wall of a dusty garage. For the next eight months, we do not think about them.
So, when we bring out the weed whacker to begin getting our lawn and flower bed areas in shape, it is not really a surprise that it won't start. In all likelihood, it is not broken; probably the ethanol gasoline you left in it when you put it in the garage last year clogged your equipment.
De-Winterizing your 2-Cycle Equipment
Ethanol gasoline is the archenemy of 2-cycle and small gas engines. Ethanol gas goes stale very quickly. In addition, once it becomes stale it undergoes a process called fuel phase separation.
Drain the gas out of the tool in a responsible way. Replace it with fresh fuel (and add oil for two-cycle equipment) then add a non-alcohol based fuel stabilizer. The fuel stabilizer counteracts the effects of the added ethanol and keeps your engine from developing new ethanol related problems.
Did you make sure that the gas tank was full and you added a fuel stabilizer before storage? If so, the likely hood of that problem occurring is minimal. Sometimes just adding a fuel stabilizer is not enough. You may have to replace some parts such as the fuel lines before everything runs smoothly.
Other Spring Prep Tips
Tools need clean air filters to run well. Before starting your trimmer, saw or other small engine equipment make sure the air filter is clean.
Replace spark plugs in everything. They are inexpensive and you should replace them annually. Bringing equipment out of storage is a good time to do this.
Add fresh oil to 2-cycle engines.
Do a general inspection of each piece of power equipment. Check for wear of belts and make sure they fit correctly. Inspect tires, control cables, bearings and all other parts to make sure they are not worn or loose.