Maintenance - Hitachi Koki CG 25EUAP Bedienungsanleitung

English
7. Then allow the engine about 2–3 minutes to warm up
before subjecting it to any load.
8. Check that the cutting attachment does not rotate when
the engine is idling.
(2) Starting the warm engine
Use only 1, 6 and 8 of the starting procedure for a cold
engine.
If the engine does not start, use the same starting
procedure as for a cold engine.
Cutting
WARNING
○ Always use the harness and wear the proper attire and
protective equipment when operating the unit. (Fig. 22)
○ Keep others including children, animals, bystanders and
helpers outside the 15 m hazard zone. Stop the engine
immediately if you are approached. (Fig. 23)
○ When grass or vines wrap around attachment, stop
engine and attachment and remove them. Continuing
operation with grass or vines wrapped around the
attachment may result in damages such as early
abrasion of the clutch.
CAUTION
Use and points of caution will vary depending on the type
of cutting attachment. For safe use, make sure to follow
the instructions and guidelines provided with each type.
NOTE
○ Press the quick release button or pull emergency release
fl ap (If so equipped) in the event of emergency. (Fig. 24)
○ Use in accordance with local laws and regulations.
(1) Using a semi-auto cutting head
○ Set the engine at high speed when using this attachment.
○ Cut grass from left to right. The cut grass will be
discharged away from the body, minimizing transfer to
your clothes. (Fig. 25)
○ With nylon cord, use about 2 cm of the end of the cord
to cut grass. Using the full length of the cord will reduce
rotation speed and make cutting diffi cult.
NOTE
Automatically feeds more nylon cutting line when it is
tapped at low rpm (not greater than 6000 min
WARNING
○ This product is equipped with a line limiter that will
automatically cut any excess cord. When operating the
unit, do not remove the guard or line limiter.
As the resistance is greater for nylon cords as opposed
to blades, mishandling could increase engine load and
result in damage.
○ Do not use with the engine set at low speeds. If the
engine speed is low, grass may wrap around the
attachment, causing the clutch to slip which could result
in clutch abrasion.
○ With nylon cord cutters, always use over 15 cm of cord.
If the length of the cord is too short, rotation speed will
increase and may cause damage to the nylon cord cutter.
(2) Using a blade
○ Adjust engine speed according to the resistance of the
grass. For soft grass, use low speeds, For tough clumps
of grass, use high speeds.
○ Cut grass from right to left, using the left side of the blade
to cut. (Fig. 26)
○ Slightly tilting the blade to the left while cutting will pile
the cut grass to the left, making collection easy.
NOTE
Excessively increasing rotation speed may cause
increased blade wear, vibration and noise. It will also
result in increased fuel consumption.
WARNING
○ 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.
○ If cutting attachment should strike against stones or
other debris, stop the engine and make sure that the
attachment and related parts are undamaged.
Stopping (Fig. 27)
Decrease engine speed and run at an idle for a few minutes,
then turn off ignition switch (26).
WARNING
A cutting attachment can injure while it continues to spin
after the engine is stopped or throttle trigger 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. 28)
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 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)
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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.
NOTE
Standard Idle rpm is 2800 – 3200 min
WARNING
When the engine is idling the cutting attachment must
under no circumstances rotate.
Changing the engine oil
Dirty engine oil will considerably reduce the service life of the
engine. Check and change the engine oil regularly.
CAUTION
○ To avoid the risk of burn injuries, allow the engine to cool
thoroughly before changing the engine oil.
○ To prevent breakdown, ensure that no sand or dirt gets
into the tank while refueling.
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