Instructions / Assembly

OPERATION CS-400

34 X7503255900

Bucking

Bucking is the sawing of a log or

fallen tree into smaller pieces. There

are a few basic rules which apply to

all bucking operations.

• Keep both hands on the handles at

all times.

• Support logs if possible.

• When cutting on a slope or hillside,

always stand uphill.

Keep in mind that the wood is heavy

and that it will bend and pinch the saw if

improperly supported. The trunk will

weaken at the point where you make the

cut unless the tree is lying on perfectly flat

ground or supported as shown. If you

make the cut with the tree on the ground,

don’t let the saw’s chain dig into the

earth; it is harmful for the saw, and you

stand a good chance of being struck by

flying debris.

To cut the trunk, use the bucking and two-cut sequence shown. The first cut

should be no deeper than one-third the trunk diameter.

Chain And Guide Bar Combination

The following combinations are recommended for model CS-400.

Use of replacement saw chain and/or guide bar other than that

specified, or operation without the “tip guard” in place, may cause

severe kickback resulting in serious injury.

Guide Bar Saw Chain

Length mm

(in.)

ECHO Part No.

Pitch mm (in.) Type Links

Low-kickback

406 (16) 16A0CD3757 9.53 (3/8) 91PX / 91VG 57

457 (18) 18A0CD3762 9.53 (3/8) 91PX / 91VG 62

Finish cut

First cut

Support

Uphill position

When the bar nose

hits another tree, etc.