Maintenance - Hitachi CG 40EAS Handling Instructions Manual

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
CAUTION
Before starting, make sure the cutting attachment does not
touch anything.
1. Slide ignition switch (17) to START position. (Fig. 18)
* Push priming bulb (20) several times so that fuel fl ows through
return pipe. (Fig. 19)
2. With the safety trigger (18) (if so equipped) pressed, pull
throttle trigger and push throttle lock (19). Then slowly release
the throttle trigger fi rst, then the safety trigger. This will lock the
throttle in starting position.
3. Set choke lever (21) to START position (closed) (A). (Fig. 20)
4. Pull recoil starter briskly, taking care to keep the handle in your
grasp and not allowing it to snap back. (Fig. 21)
5. When you hear the engine want to start, return choke lever to
RUN position (open) (B). Then pull recoil starter briskly again.
NOTE
If engine does not start, repeat procedures from 3 to 5.
6. After starting engine, pull throttle trigger to release throttle lock.
Then allow the engine about 2–3 minutes to warm up before
subjecting it to any load.
7. Check that the cutting attachment does not rotate when the
engine is idling.
Cutting (Fig. 22, 23, 24)
○ When cutting, operate engine at over 6500 min
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.
○ Use in accordance with local laws and regulations.
NOTE
Pull emergency release fl ap in the event of emergency. (Fig.
25)
How to use the shoulder harness
Wear the shoulder harness on your shoulder as shown Fig. 23
and hook it on the hanger of the machine. Adjust the length of the
shoulder harness to the most comfortable position. (Fig. 23)
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
(23) of the shoulder harness from the hanger (24). (Fig. 25-a)
How to reinstall the hook after using the emergency release
pinch
It needs to go through the buckle (25) of the hook (23) to the metal
plate (26) on the harness and go through the plate (27) of the
emergency release pinch to the metal plate (26) on the harness.
(Fig. 25-b)
After installing the buckle onto the harness, pull the hook (23) and
make sure the hook (23) is securely fi xed on the harness, then hook
it to the hanger (24). (Fig. 25-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 (22) of the harness to the direction of the arrow shown in
Fig. 25-a.
○ If the 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 while 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. 26)
Decrease engine speed and run at an idle for a few minutes, then
turn off ignition switch (17).
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.
Semi-auto cutting head
. Extended
○ When cutting, operate engine at over 6500 min
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time of use at low rpm may wear out the clutch prematurely.
○ Cut grass from right to left.
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.
Automatically feeds more nylon cutting line when it is tapped at low
rpm (not greater than 4500 min

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. 27)
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 Hitachi Authorized Service Centers.
English
. Extended
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).
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