GUARD AGAINST KICKBACK
Follow all safety rules to help avoid kick- back and other forces which can result in serious injury.
Kickback Path
Avoid Obstructions
Clear The Working Area
WARNING: Avoid kickback which can result in serious injury. Kickback is the backward, upward or sudden for- ward motion of the guide bar occurring when the saw chain near the upper tip of the guide bar contacts any object such as a log or branch, or when the wood closes in and pinches the saw chain in the cut. Contacting a foreign object in the wood can also result in loss of chain saw control.
S Rotational Kickback can occur when
the moving chain contacts an object at the upper tip of the guide bar. This con- tact can cause the chain to dig into the object, which stops the chain for an instant. The result is a lightning fast, re- verse reaction which kicks the guide bar up and back toward the operator.
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REDUCE THE CHANCE OF
KICKBACK
The following precautions should be fol- lowed to minimize kickback:
S Recognize that kickback can happen. With a basic understanding of kickback, you can reduce the element of surprise which contributes to accidents.
SNever let the moving chain contact any
object at the tip of the guide bar.
S Keep working area free from obstruc- tions such as other trees, branches, rocks, fences, stumps, etc. Eliminate or avoid any obstruction that your saw chain could hit while cutting.
S When cutting a branch, do not let the guide bar contact another branch or oth- er objects around it.
S Keep saw chain sharp and properly tensioned. A loose or dull chain can in- crease the chance of kickback. Follow manufacturer’s chain sharpening and maintenance instructions. Check ten- sion at regular intervals, but never with engine running. Make sure bar clamp nuts are securely tightened.
SBegin and continue cutting at full speed. If the chain is moving at a slower speed, there is greater chance of kickback oc-
curring.
S Use extreme caution when
SDo not attempt cuts starting with the tip of the bar (plunge cuts).
S Watch for shifting logs or other objects that could close a cut and pinch or fall onto chain.
S Use the specified
Avoid Pinch-Kickback:
SBe extremely aware of situations or ob- structions that can cause material to pinch the top of or otherwise stop the
chain.
SDo not cut more than one log at a time. S Do not twist the saw as the bar is with- drawn from an undercut when bucking.
Avoid Pull-In:
S Always begin cutting with the saw at full speed and the saw housing against wood.
S Use wedges made of plastic or wood. Never use metal to hold the cut open.