Hitachi Koki CG40EAS Handling Instructions Manual page 9

○ Always wash any spilled fuel from clothing immediately
with soap.
○ Be sure to check any fuel leaking after refueling.
Before fueling, clean the tank cap area carefully, to ensure
that no dirt falls into the tank. Make sure that the fuel is well
mixed by shaking the container, before fueling.
Starting (Fig. 14)
CAUTION
Before starting, make sure the cutting attachment does
not touch anything.
1. Slide ignition switch (10) to RUN position. (Fig. 14)
Push priming bulb (11) several times so that fuel fl ows
through return pipe. (Fig. 15)
2. Set the throttle lever upward to the "idle" position.
(Fig. 14)
3. Set choke lever to CLOSED position (12). (Fig. 16)
4. Pull recoil starter briskly, taking care to keep the handle in
your grasp and not allowing it to snap back. (Fig. 17)
5. When you hear the engine want to start, return choke
lever to RUN position (open). Then pull recoil starter
briskly again.
NOTE
If engine does not start, repeat procedures from 2 to 5.
Cutting (Fig. 18, 19, 20)
○ When cutting, operate engine at over 6500 rpm.
Extended time of use at low rpm may wear out the clutch
prematurely.
○ Cut grass from right to left.
○ Blade thrust may occur when the spinning blade contacts
a solid object in the critical area.
A dangerous reaction may occur causing the entire unit
and operator to be thrust violently. This reaction is called
BLADE THRUST. As a result, the operator may lose
control of the unit which may cause serious or fatal injury.
Blade thrust is more likely to occur in areas where it is
diffi cult to see the material to be cut.
○ Wear the harness as shown in the fi gure. The blade turns
counter-clockwise, therefore, be advised to operate the
unit from right to left for effi cient cutting. Keep onlookers
out of working area at least 15 m (50 ft.).
How to use the shoulder harness
Wear the shoulder harness on your shoulder as shown
Fig. 19 and hook it on the hanger of the machine. Adjust
the length of the shoulder harness to the most comfortable
position. (Fig. 19)
To remove the machine from the shoulder harness, hold the
main pipe of the machine fi rmly by one hand and then remove
the hook (14) of the shoulder harness from the hunger (15).
(Fig. 21-a)
How to reinstall the hook after using the emergency
release pinch
It needs to go through the buckle (16) of the hook (14) to the
metal plate (17) on the harness and go through the plate (18)
of the emergency release pinch to the metal plate (17) on the
harness. (Fig. 21-b)
After installing the buckle onto the harness, pull the hook
(14) and make sure the hook (14) is securely fi xed on the
harness, then hook it to the hunger (15). (Fig. 21-a)
WARNING
○ When using the machine, wear the shoulder harness and
hold the machine correctly with both hands.
If you feel that there is something dangerous, separate
the brush cutter from your body by pulling the emergency
release pinch (13) of the harness to the direction of the
arrow showing on Fig. 21-a.
○ If cutting attachment should strike against stones or
other debris, stop the engine and make sure that the
attachment and related parts are undamaged. When
grass or vines wrap around attachment, stop engine and
attachment and remove them.
NOTE
If you pull the emergency release pinch without holding
the machine, the machine will fall to your feet. Pull the
emergency release pinch as holding the main pipe of the
machine by one hand.
Before operation, make sure that the emergency release
pinch on the shoulder harness is working properly.
Stopping (Fig. 22)
Decrease engine speed and run at an idle for a few minutes,
then turn off ignition switch (10).
WARNING
A cutting attachment can injure while it continues to spin
after the engine is stopped or power control is released.
When the unit is turned off , make sure the cutting
attachment has stopped before the unit is set down.
MAINTENANCE
MAINTENANCE, REPLACEMENT, OR REPAIR OF THE
EMISSION CONTROL DEVICES AND SYSTEMS MAY
BE PERFORMED BY ANY NON-ROAD ENGINE REPAIR
ESTABLISHMENT OR INDIVIDUAL.
Carburetor adjustment (Fig. 23)
WARNING
The cutting attachment may be spinning during carburetor
adjustments.
Never start the engine without the complete clutch cover
and tube assembled! Otherwise the clutch can come
loose and cause personal injuries.
In the carburetor, fuel is mixed with air. When the engine is
test run at the factory, the carburetor is basically adjusted.
A further adjustment may be required, according to
climate and altitude. The carburetor has one adjustment
possibility:
T = Idle speed adjustment screw.
Idle speed adjustment (T)
Check that the air fi lter is clean. When the idle speed is
correct, the cutting attachment will not rotate. If adjustment
is required, close (clockwise) the T-screw, with the engine
running, until the cutting attachment starts to rotate. Open
(counter-clockwise) the screw until the cutting attachment
stops. You have reached the correct idle speed when the
engine runs smoothly in all positions well below the rpm
when the cutting attachment starts to rotate.
If the cutting attachment still rotates after idle speed
adjustment, contact a HITACHI dealer.
NOTE
Standard Idle rpm is 2200 – 2800 rpm.
WARNING
When the engine is idling the cutting attachment must
under no circumstances rotate.
Air fi lter (Fig. 24)
The air fi lter must be cleaned from dust and dirt in order to
avoid:
○ Carburetor malfunctions.
○ Starting problems.
○ Engine power reduction.
○ Unnecessary wear on the engine parts.
○ Abnormal fuel consumption.
Clean the air fi lter daily or more often if working in
exceptionally dusty areas.
English
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