Craftsman 172.740500 Operator's Manual page 13

OPERATION cont.
GENERAL CUTTING cont.
For thicker logs, reset the spiked bumper teeth to a lower point on the log while sawing by
pulling the saw slightly backwards and repositioning the teeth at a lower level on the log.
Do not remove the saw completely
from the wood.
Fig. 14
• Do not force the chain while cutting,
let the chain do the work, using the
gripping teeth to apply minimal
leverage pressure.
• Do not operate the chain saw with
arms fully extended or attempt to saw
areas which are difficult to reach,
or on a ladder. Never use the chain
saw above shoulder height.
(See Fig. 14)
WARNING:
!
Never use the chain
saw above shoulder
height.
NOTE: Sawing is optimized when
the chain speed remains steady
during cutting.
Beware when reaching the end
of the cut. The weight of the saw
may change unexpectedly as it
cuts free from the wood.
Accidents can occur to the legs
and feet.
Always remove the saw from
a wood cut while the saw is
running.
NOTE: Do not attempt a pruning or limbing operation in a standing tree unless
specifically trained to do so.
NOTE: When cutting a limb that is under tension or compression,
be alert for springback.
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OPERATION cont.
GENERAL CUTTING cont.
CUTTING LOGS
Observe the following safety instructions:
Support logs so that the facing sides at the cut do not close in against each other,
which would result in the chain being jammed or pinched. (See Figs. 15 and 16)
Fig. 15 Fig. 16
CAUTION:
!
Position and set short logs safely prior to sawing. Saw only wood or wooden objects.
When sawing, always take care to avoid hitting stones, nails, etc. as these could be
thrown up or cause damage to the chain or serious injury to the operator or bystanders.
Keep a running saw clear of wire fencing or the ground.
Use of the saw to thin out branches or bushes is not approved.
When working on a slope, operate above or to the side of the upright trunk, fallen tree
or laying log. Never assume a downhill position from the trunk, tree or log.
Be careful not to trip over tree stumps, branches, roots, etc.
CUTTING WOOD UNDER TENSION
(See Fig. 16)
There is a high risk of accidents when sawing wood, branch or trees under tension.
Be extremely careful. Leave saw jobs like these to professionals.
When sawing logs supported on both ends, start the cut from above (Y) about 1/3 of the
diameter into the log and then finish the cut (Z) from below, in order to avoid contact of the
chain saw with the ground. When sawing logs supported on only one end, start the cut
from below (Y) about 1/3 of the diameter into the log and finish the cut from above (Z) in
order to avoid log splitting or jamming of the chain saw.
25
Y
Z
Z
kg
Y