○ Wear the harness as shown in the fi gure (if so equipped). 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
Press the quick release button or pull emergency release fl ap
(If so equipped) in the event of emergency. (Fig. 25)
WARNING
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.
Stopping (Fig. 27)
Decrease engine speed and run at an idle for a few minutes, then
turn off ignition switch (24).
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
○ When cutting, operate engine at over 6500 min
. Extended
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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
).
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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 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.
NOTE
Standard Idle rpm is 2800 – 3200 min
.
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