Chain Brake; Stopping The Engine - Hitachi CS40EM Bedienungsanleitung

1. H and L needles are restricted within the number
of turn as shown below.
H needle :
L needle :
2. Start the engine and allow it to warm up in low
speed for a few minutes.
3. Turn the idle adjusting screw (T) counterclockwise
so that the saw chain does not turn. If the idling
speed is too slow, turn the screw clockwise.
4. Make a test cut and adjust the H needle for best
cutting power, not for maximum speed.
NOTE
Some models sold areas with strict exhaust emis-
sion regulation do not have high and low speed
carburetor adjustments. Such adjustments may
allow the engine to be operated outside of their
emission compliance limits. For these models, the
only carburetor adjustment is idle speed.
For models that equipped with low and high speed
adjustments; carburetors are pre set at the fac-
tory Minor adjustments may optimize performance
based on climate, altitude, etc. Never turn the
adjustment screws in increments greater than 90
degrees, as engine damage can result from incor-
rect adjustment If you are not familiar with type of
adjustment-assistance HITACHI dealer.

CHAIN BRAKE

This machine is equipped with an automatic brake to
stop saw chain rotation upon occurrence of kickback
during saw cutting. The brake is automatically oper-
ated by inertial force, which acts on the weight fitted
inside the front guard.
This brake can also be operated manually with the
front guard turned down to the guide bar.
To release the brake, pull up the front guard toward
the front handle till a "click" sound is heard.
[Caution]
Be sure to confirm brake operation during daily in-
spection.
How to confirm:
1) Turn off the engine.
2) Holding the chain saw horizontally, release your
hand from the front handle, hit the tip of the guide
bar to a stump or a piece of wood, and confirm
brake operation. Operating level varies by bar
size.
1
- /
4
1
- /
4
In case the brake is not effective, ask our dealer for
inspection and repairs.
If the engine keeps rotating at high speed with the
brake engaged, the clutch will overheat causing trou-
ble.
When the brake engages during operation, immedi-
ately release the throttle lever to stop the engine.

STOPPING THE ENGINE

1. Release the throttle lever to allow the engine to
idle for a few minutes.
2. Set the switch to the "O" (STOP) position.
Carburetor anti-freeze mechanism
Operating chain saws in temperatures of 0 – 5°C at times
of high humidity may result in ice forming within the carbu-
retor, and this in turn may cause the output power of the
engine to be reduced or for the engine to fail to operate
smoothly.
This product has accordingly been designed with a
ventilation hatch on the right side of the surface of the
cylinder cover to allow warm air to be supplied to the
engine and to thereby prevent icing from occurring.
Under normal circumstances the product should be
used in the normal operating mode, i.e., in the mode
to which it is set at the time of shipment. However
when the possibility exists that icing may occur, the
unit should be set to operate in the anti-freeze mode
before use.
(1) Air cleaner cover
(2) Shutter plate
(3) Screw
WARNING
• Continuing to use the product in the anti-freeze
mode even when temperatures have risen and
returned to normal, may result in the engine fail-
ing to start properly or in the engine failing to
operate at its normal speed, and for this reason
you should always be sure to return the unit to the
normal operating mode if there is no danger of ic-
ing occurring.
H O W TO S W I T C H B E T W E E N O P E R AT I N G
MODES
1. Flip the engine switch to turn off the engine.
2. Remove the air cleaner cover from the cylinder cover
3. Loosen a screw and remove the screen on the back
of the air cleaner cover.
4. Turn the screen a half and reinstall to the cover.
When using the saw with the anti-freeze mode, fre-
quently check the screen and keep it clean of saw dust.
(4) Normal operating mode
(5) Anti-freeze mode
(6) Screen
GB-11