Craftsman 316.34107 manual Kickback Specifics, Pinch Kickback

RULES FOR SAFE OPERATION cont.

KICKBACK SPECIFICS

WARNING: Kickback can lead to dangerous loss of

control of the chain saw and result in serious or fatal injury to the saw operator or to any- one standing close by. Always be alert.

Rotational kickback and pinch-kickback are major chain saw operational dangers and the leading cause of most accidents.

KICKBACK may occur when the NOSE or TIP of the guide bar touches an object, or when wood closes in and pinches the saw chain in the cut.

Tip contact in some cases may cause a lightning-fast reverse reaction, kicking the guide bar up and back toward the operator.

Any of these reactions may cause you to lose control of the saw, which could result in serious personal injury.

Rotational Kickback

Rotational Kickback can occur when the moving chain contacts an object at the upper tip of the guide bar. This contact can cause the chain to dig into the object, which stops the chain for an instant. The result is a lightning fast, reverse reaction which kicks the guide bar up and back toward the operator.

KICKBACK SPECIFICS

Pinch Kickback

Pinch kickback can occur when the saw chain is pinched along the bottom or top of the guide bar.

When pinched on the bottom of the guide bar, it may pull the saw forward, away from the operator.

When pinched along the top of the guide bar, it may push the guide bar rapidly back toward the operator.

A

A = Pull	B B
B = Solid objects
C = Push
		C
	Fig. 2

AB

AA

A = Kickback path

B = Kickback reaction zone

Fig. 1

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