Cutting Attachment - Stihl MS 151 TC Instruction Manual

English
of the chainsaw since it might otherwise go out of
control!
Make sure your saw does not touch any foreign
materials: Stones, nails, etc. may be flung off
and damage the saw chain. The chain saw may
kick back unexpectedly – risk of accident!
If a rotating saw chain hits a stone or another
hard object, sparks may be generated which may
ignite easily flammable materials under certain
conditions. Also dried-out plants and brushwood
are combustible, above all in hot and dry
weather. If there is a risk of fire, do not use the
chain saw in the vicinity of easily combustible
materials, dry plants or scrub. It is mandatory
that you ask the responsible forestry office about
the current fire hazard.
Caution! To avoid risk of electrocu‐
tion, take extra precautions when cut‐
ting near power lines. Have the power
switched off before starting cutting
work in the immediate vicinity of
power lines.
Do not underbuck freely hanging limbs because
the chain may get pinched and cause kickback
and loss of control.
Be careful when cutting scrub and young trees.
Thin shoots can be scooped up by the chain saw
and hurled towards the user.
Be careful when cutting splintered wood – Risk of
injury from ejected pieces of wood!
After finishing a cut, activate the chain brake to
lock the chain or shut down the engine before
moving the saw to another position in the tree.
Cutting techniques:
Begin cutting with the chain saw at full throttle.
Always pull the saw out of the cut with the chain
running.
– Cut straight through thin limbs
– In case of thick limbs, first perform relieving
cut from below (approx. 1/5 of diameter), then
buck from above
– Support and secure heavy branches with
ropes.
If the saw gets pinched in the cut:
– Shut off the engine and secure the saw to the
tree – in direction of trunk.
– Carefully free the saw from the cut, using
another saw if necessary.
10
Limbs under tension:
► Always start relieving cut (1) at compression
side (A)
► Then make bucking cut (2) at the tension
side (B) into the direction of the log – other‐
wise the chain saw may pinch or kick back
If not otherwise possible, make the bucking cut
from the bottom upwards (underbuck) – be wary
of pushback.
5

Cutting Attachment

A cutting attachment consists of the saw chain,
guide bar and chain sprocket.
The cutting attachment that comes standard is
designed to exactly match the chain saw.
1
a
– The pitch (t) of the saw chain (1), chain
sprocket and the nose sprocket of the Rollo‐
matic guide bar must match.
– The drive link gauge (2) of the saw chain (1)
must match the groove width of the guide
bar (3).
If non-matching components are used, the cut‐
ting attachment may be damaged beyond repair
after a short period of operation.
5 Cutting Attachment
2
3
0458-508-8321-B