Makita UC3050A, UC4050A, UC4550A Bucking, Limbing, Burrowing and parallel-to-grain cuts, Felling

Bucking

1. Spike bumper

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For bucking cuts, rest the spike bumper shown in the figure on the wood to be cut.

With the saw chain running, saw into the wood, using the rear handle to raise the saw and the front one to guide it. Use the spike bumper as a pivot.

Continue the cut by applying slight pressure to the front handle, easing the saw back slightly. Move the spike bumper further down the timber and raise the front handle again.

When making several cuts, switch the chain saw off between cuts.

CAUTION:

•If the upper edge of the bar is used for cutting, the chain saw may be deflected in your direction if the chain becomes trapped. For this reason, cut with the lower edge, so that the saw will be deflected away from your body.

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Cut wood under tension on the pressure side (A )first. Then make the final cut on the tension side (B ). This prevents the bar from becoming trapped.

A

B

B

A

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Limbing

CAUTION:

•Limbing may only be performed by trained persons. A hazard is presented by the risk of kick- back.

When limbing, support the chain saw on the trunk if possible. Do not cut with the tip of the bar, as this presents a risk of kickback.

Pay particular attention to branches under tension. Do not cut unsupported branches from below.

Do not stand on the felled trunk when limbing.

Burrowing and parallel-to-grain cuts

CAUTION:

•Burrowing and parallel-to-grain cuts may only be carried out by persons with special training. The possibility of kickback presents a risk of injury.

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Perform parallel-to-grain cuts at as shallow an angle as possible. Carry out the cut as carefully as possible, as the spike bumper cannot be used.

Felling

CAUTION:

•Felling work may only be performed by trained persons. The work is hazardous.

Observe local regulations if you wish to fell a tree.

1. Felling area

45o

21/2

45o

1

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−Before starting felling work, ensure that:

(1)Only persons involved in the felling operation are in the vicinity;

(2)Any person involved has an unhindered path of retreat through a range of approximately 45 ° either side of the felling axis. Consider the additional risk of tripping over electrical cables;

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