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Hitachi CS40SB Manual

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English
The chain brake is an emergency stop device that stops
the saw chain when the unit is subject to kickback etc., to
reduce risk.
(Refer to “Causes and operator prevention of kickback.”)
When activating the chain brake by pushing the brake lever
forward, the saw chain stops moving.
If you pull the brake lever toward you, the brake is released.
When confi rming the operation of the chain brake, always
switch the unit off , disconnect the plug form the receptacle,
activate the brake lever and pull the saw chain by hand.
If the saw chain does not move, this means the chain brake
is activated.
NOTE
Always wear thick gloves for this task.
Since the saw chain blade is very sharp, pulling it hard
risks injuring your fi ngers.
5. Checking the chain oil
○ This unit is delivered without chain oil inside. Ensure
the oil tank is fi lled with the chain oil provided before
use. (Fig. 14)
○ Periodically check the oil sight glass during work and
replenish oil as required.
○ If the chain oil supplied runs out, use Hitachi chain oil
sold separately or equivalent chain oil on the market.
○ The chain oil lubricates automatically.
The discharge rate for auto lubrication is factory preset
to the maximum.
To reduce the discharge rate, turn the oil pump adjuster
on the rear of the body clockwise. (Fig. 15)
NOTE
○ The oil tank capacity is about 200 ml.
Even if overfi lled, excess oil will escape from the
overfl ow spout.
○ We recommend that you stock up with chain oil.
If you continue working without chain oil, the saw chain
may burn through, or the motor may fail.
○ Be careful to avoid dust or other foreign matter from
entering the oil tank.
If dust and other foreign matter enter the oil tank, the
unit may fail.
○ Chain oil left in the tank may leak due to the structure of
this unit. Although this does not indicate a malfunction,
it may soil the storage location, so be careful.
When storing, empty the oil from the oil tank, and place
an item under the main body which can absorb any
leaks.
6. Connecting the plug to the receptacle
7. Checking brake is engaged
○ When the switch is engaged while pressing the lock-
off button, the unit switches on, and when the switch is
released, the unit switches off .
○ In addition, at the same time as releasing the switch,
the unit applies a brake to stop the rotation of the saw
chain.
○ Before using, check to ensure brake is engaged.
CAUTION
Be careful of the repulsive force when the brake is
engaged.
If you drop the unit, injury may occur.
8. Checking chain oil discharge (Figs. 15, 16)
○ When switching the unit on, chain oil automatically
lubricates the saw chain and guide bar.
○ If oil does not seem to emerge 2 to 3 minutes after
the unit starts, check if any sawdust has accumulated
around the oil spout.
(Refer to “Cleaning the chain oil spout.”)
(Refer to “Checking the chain oil.”)
9. It is recommended to use an earth-leakage circuit
breaker or a residual current device.
Switch operation
When the switch is engaged while pressing the lock-off
button, the saw chain rotates. (Fig. 17)
Unless the lock-off button is pressed, the switch cannot
be engaged.
After the switch is engaged, the saw chain continues
rotating as long as it is pressed down.
When the switch is released, a brake is applied to stop
the saw chain rotation.
WARNING
Do not secure the lock-off button while it is pressed.
If the switch is accidentally engaged, the unit may
unexpectedly start and injury may occur.
Using the plug clip
The cord leading from the power plug is prevented from
being pulled out by the plug clip. (Fig. 18)
CUTTING PROCEDURES
WARNING
○ Prior to operation, ensure that chain brake works.
○ During use, grip the handle securely with both hands.
○ When cutting timber from the bottom, ensure the saw
chain does not impact with the timber.
If the unit is pushed back, injury may occur.
○ During work breaks or after work, always switch the unit
off , and disconnect the plug from the receptacle.
Always monitor the workplace and surrounding area,
ensure there are no objects which could cause injuries,
accidents or failure, and if any are present, remove them
in advance.
In particular, when establishing a foothold for working,
ensure there is no instability or any object which could be
tripped over.
When felling standing trees, always pay careful attention to
the direction in which the tree will fall or roll, and determine
a safe evacuation area and escape route for yourself in
advance.
1 Ensuring the unit is switched off
If the plug is connected to a receptacle while the switch
is unknowingly engaged, the unit may unexpectedly
start, which may result in an accident.
2 Engaging the switch
Ensuring the saw chain is not in contact with the timber,
engage the switch, and start cutting when the saw
chain speed has increased.
CAUTION
○ When switching the unit on, ensure the saw chain does
not contact with material or anything else.
○ During use, be careful to ensure the saw chain does
not contact with other material or object. In particular,
when you have fi nished cutting, be careful to ensure it
does not touch the ground.
NOTE
Refi ll the oil tank early to prevent the unit running out of
oil.
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. 19.
(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. 20.
… 10 …


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