Operating The Engine; Starting The Engine; Adjusting The Carburetor - Hitachi CS40EM Manual Del Propietário

6. Operating the Engine

WARNING
• It is very dangerous to run a chainsaw that mounts
broken parts or lacks any parts.
Before starting engine, make sure that all the parts
including bar and chain are installed properly.

■ STARTING THE ENGINE

1. Fill fuel and chain oil tanks respectively, and tighten
the caps securely.
2. Set the switch to"I"position. Press the decompres-
sion valve (3).
3. Pull choke knob fully to choked position.
This will automatically lock the throttle in
starting position.
NOTE
If engine does not start easily, pull choke knob fully and
return it.
This will lock the throttle lever in starting position. Pull
recoil starter.
NOTE
Once the choke knob has been pulled out, it will not return
to the operating position even if you press down on it with
your finger. When you wish to return the choke knob to the
operating position, pull out the throttle lever instead.
4. While holding the saw unit securely on the ground,
pull the starter rope vigorously.
WARNING
• Do not start the engine while the chain saw
hangs in one hand. The saw chain may touch
your body. This in very dangerous.
GB-10
(1) Chain oil
(2) Fuel
(3) Decompression valve
(1) Switch
(2) Throttle lever
(3) Throttle interlock
Choke knob
5. When you hear the engine want to start, with the
safety trigger pressed pull throttle trigger. This will
release the throttle from starting position to run po-
sition and will return the choke knob to run position
automatically.
6. Allow the engine to warm up with the throttle lever
pulled slightly.
WARNING
• Keep clear of the saw chain as it will start rotating
upon starting of engine.
■ CHECKING THE OIL SUPPLY
WARNING
• Make sure to set up the bar and the chain when
checking the oil supply.
If not, the rotating parts may be exposed. It is very
dangerous.
After starting the engine, run the chain at medium speed
and see if chain oil is scattered off as shown in the figure.
Chain oil
The chain oil flow can be changed by inserting a screw-
driver in the hole on bottom of the clutch side. Adjust
according to your work conditions.
NOTE
The oil tank should become nearly empty by the time
fuel is used up. Be sure to refill the oil tank every time
when refueling the saw.

■ ADJUSTING THE CARBURETOR

The carburetor on your unit has been factory adjusted,
but may require fine tuning due to a change in operat-
ing conditions.
Before adjusting the carburetor, make sure that the pro-
vided air/fuel filters are clean and fresh and the fuel prop-
erly mixed.
When adjusting, take the following steps:
NOTE
Be sure to adjust the carburetor with the bar chain at-
tached.
Chain oil flow
adjusting
(1) L needle
(2) H needle
(3) Idle adjusting screw