Switch Operations; Checking For Chain Oil Ejection; Protection Circuit; Cutting Procedures - Hitachi CS 30Y Instrucciones De Manejo

ATTACHING THE PLUG CLIP
The cord leading from the power plug is prevented from
being pulled out by the plug clip. (Fig. 11)

SWITCH OPERATIONS

WARNING
Do not secure the switch lock off button while it is
pressed. Accidently pulling the switch may result in the
chain saw unexpectedly starting up, which could lead
to injuries.
(1) Make sure that the chain saw is not switched on, and
then insert the power plug into a power socket.
(2) The chain saw is switched on when the lock off button
is pulled, and switched off when it is released. (Fig. 12)
CHECKING FOR CHAIN OIL
EJECTION
○ The saw chain and guide bar are automatically
lubricated with chain oil when the chain saw is switched
on.
Check to make sure that chain oil is being applied from
the end of the guide bar normally. (Fig. 13)
○ If the oil is not ejected after rotating the chain for two
or three minutes, check to make sure that sawdust has
not collected around the oil outlet.
○ The amount of chain oil ejected can be adjusted with
the oil adjustment screw. (Fig. 14)
Cutting thick pieces of wood places a heavy load on
the saw chain, so make sure the amount of oil ejected
is increased at these times.
CAUTION
A soft-start function is activated when the chain saw is
switched on and the saw chain rotations start off slowly.
Wait until the rotations have built up before starting
work.

PROTECTION CIRCUIT

The chain saw is equipped with a protection circuit to
prevent it from being damaged. The motor will automatically
stop if excessive load is placed on the chain saw, such as
when forcing it to cut through hard wood, etc.
In this event, switch the chain saw off , isolate the reason for
the motor stopping, and then switch it on again and resume
work once the cause of the problem has been completely
eradicated.
Wait for at least two seconds after switching the chain saw
off following an automatic halt before switching it on again.

CUTTING PROCEDURES

1. General cutting procedures
(1) Switch ON the power while keeping the saw slightly
away from the wood to be cut. Start sawing only after
the unit has reached full speed.
(2) When sawing a slender piece of wood, press the base
section of the guide bar against the wood and saw
downward as shown in Fig. 15.
(3) When sawing a thick piece of wood, press the spike on
the front section of the unit against the wood and cut it
with a lever action while using the spike as a fulcrum as
shown in Fig. 16.
(4) When cutting wood horizontally, turn the unit body to
the right so that the guide bar is below and hold the
upper side of the side handle with your left hand. Hold
the guide bar horizontally and place the spike that is on
the front of the unit body on the lumbar. Using the spike
as a fulcrum, cut into the wood by turning the handle to
the right. (Fig. 17)
(5) When cutting into wood from the bottom, touch the
upper part of the guide bar to the wood lightly. (Fig. 18)
(6) As well as carefully studying the handling instructions,
ensure practical instruction in the operation of the
chain saw prior to use, or at least practice working with
the chain saw by cutting lengths of round timber on a
sawing trestle.
(7) When cutting logs or timbers which are not supported,
support them properly by immobilizing them during
cutting using a sawing trestle or other proper method.
CAUTION
○ When cutting wood from the bottom, there is a danger
that the unit body may be pushed back toward the user
if the chain strongly impacts with the wood.
○ Do not cut all the way thorough the wood by starting
from the bottom since there is the danger of the guide
bar fl ying up out of control when the cut is fi nished.
○ Always prevent the operating chain saw from touching
the ground or wire fences.
2. Branch cutting
(1) Cutting branches from a standing tree:
A thick branch should initially be cut off at a point away
from the trunk of the tree.
First cut in about one third of the way from below, and
then cut off the branch from above. Finally, cut off the
remaining portion of the branch even with the trunk of
the tree. (Fig. 19)
CAUTION
○ Always be careful to avoid falling branches.
○ Always be alert for chain saw recoil.
(2) Cutting branches from fallen trees:
First cut off branches that do not touch the ground, then
cut off those which touch the ground. When cutting
thick branches that touch the ground, fi rst cut in about
half of the way from above, then cut the branch off from
below. (Fig. 20)
CAUTION
○ When cutting off branches which touch the ground, be
careful that the guide bar does not become bound by
pressure.
○ During the fi nal cutting stage, beware of the log
suddenly rolling.
3. Log cutting
When cutting a log positioned as shown in Fig. 21, fi rst
cut in about one third of the way from below, then cut
down all the way from above. When cutting a log that
straddles a hollow as shown in Fig. 22, fi rst cut in about
two thirds of the way from above, then cut upward from
below.
CAUTION
○ Ensure the guide bar does not become bound in the log
by pressure.
○ When working on inclined ground, be sure to stand on
the uphill side of the log. If you stand on the downhill
side, the cut-off log may roll toward you.
4. Felling trees
(1) Undercut (1 as shown in Fig. 23):
Make undercut facing the direction in which you want
the tree to fall.
The depth of the undercut should be 1/3 of the tree's
diameter. Never fell trees without proper undercut.
(2) Back cut (2 as shown in Fig. 23):
Make a backcut about 5 cm above and parallel to the
horizontal undercut.
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English