Powered hedge trimmers save you the effort and elbow grease required by manual shears and loppers. Most are corded electric
trimmers, which typically cost $30 to $70 and require less maintenance than gasoline-powered models (about $200 to $300).
But even pricier gas trimmers can keep trimming reliably for years if you follow some simple steps:
When the yard-care season begins:
Be sure the blades are sharp. A tip-off to dull blades: The engine or electric motor labors during operation or the blades
snag on branches. Some trimmers have blades that can be sharpened. (You can do it yourself with a flat crosscut sharpening
file.) On others, the blades must be replaced.
Replace the spark plug on gas-powered trimmers.
Check that the handles and their attaching nuts and bolts are secure.
For gas models, mix fresh gasoline and two-cycle oil according to the ratio recommended in the owner's manual. Too little
oil can damage the engine by underlubricating vital parts; too much can cause poor running, excess exhaust emissions, and
fouled spark plugs.
Be sure the debris shield that protects your hands from the reciprocating blades is securely attached and in good condition.
During the season:
Check that the intake vent near a gas trimmer's carburetor air filter is clear of debris so that the engine runs efficiently.
On gas trimmers with a clutch, check that the blades don't begin moving at idle until you increase the engine speed. Reduce
the engine idle speed if needed by turning a screw on the carburetor.
Before winter storage:
Add stabilizer to the fuel and run the engine to distribute the stabilized mixture through the fuel lines and carburetor.
Disconnect the spark plug, thoroughly clean all outer surfaces, and clear all intake and exhaust vents of debris.
Spray a light coating of machine oil or resin solvent on the blades.
