Recently, I purchased a chain saw to trim some trees in our yard. Last year, during a storm, a large weeping willow tree partially fell on our house. The tree was leaning on a strong oak tree, preventing severe damage from occurring. But I now fear other trees or limbs could fall down and cause damage to the home or vehicles.

It is also important to understand the dangers inherent with operating a chainsaw and cutting tree limbs. At one point, a large limb I was cutting fell and hit me on the leg.

Some things to keep in mind:

• Inspect the tree carefully for loose or rotten limbs before starting to cut. Vibrations from cutting may cause limbs to fall. They can cause injuries and even kill.

• Check the lower tree trunk for rot. That could cause the tree to fall in the wrong direction.

• Cut and remove small trees and brush around the tree. These items can get caught in the chain and kick back.

• Before felling the tree, plan the direction of fall to guide your undercut and backcut. Clean an escape path away from the direction of the fall.

• Leave the chain saw on the ground while starting the engine. Be sure it is solidly placed with the chain free of dirt, snow or twigs.

• While cutting, use both hands to keep a firm grip on the handle and keep guard tight against the tree or log. It is safer to hold the chain saw close to your body to use your strength better and to give you more control.

• Shut off the engine when moving from one place to another. Wait for the chain to stop before you move. A slow moving chain can kick up and back if you catch the tip on a branch.

• Use wood or plastic wedges when felling a tree or cutting it up. They are lightweight and will not seriously damage the chain if they come in contact. Stop the chain before wedging. If the wedge touches the moving chain, it may break the chain or cause it to kick back.

• Avoid holding the chain saw above the waist level while cutting. Remove the limbs after the tree or branch is on the ground.

• Watch the positions and actions of other persons near you. Be sure they are out of range of the saw and the falling tree's path before starting to cut.