10
English
●
Do not install or remove cutting attachments
while the engine is running.
●
Always use genuine Hitachi cutting
attachments and metal
fi
ttings.
Installation of semi-auto cutting head
1. Function
Automatically feeds more nylon cutting line
when it is tapped at low rpm (not greater than
4,500 min
–1
).
Speci
fi
cations
Code No.
Type of
attaching
screw
Direction of
rotation
Size of
attaching
screw
6696454 Female
screw
Counterclockwise M10×P1.25-
LH
6696597 Female
screw
Clockwise
M8×P1.25-
RH
Applicable nylon cord
Cord diameter: 1/8
˝
(
Φ
3.0 mm) Length: 6.5 ft (2 m)
Cord diameter: 3/22
˝
(
Φ
2.4 mm) Length: 13 ft (4 m)
2. Precautions
○
The case must be securely attached to the cover.
○
Check the cover, case and other components for
cracks or other damage.
○
Check the case and button for wear.
If the wear limit mark (22) on the case is no
longer visible or there is a hole in the bottom (23)
of the button, change the new parts immediately.
(Fig. 10)
23
22
Fig. 10
○
The cutting head must be securely mounted to
the unit’s gear case/cutter case.
○
If the cutting head does not feed cutting line
properly, check that the nylon line and all
components are properly installed. Contact
Hitachi Authorized Service Centers if you need
assistance.
WARNING
For Hitachi heads, use only
fl
exible,
non-metallic line recommended by the
manufacturer. Never use wire or wire ropes.
They can break o
ff
and become a dangerous
projectile.
3. Installation (Fig. 11)
Insert the allen wrench (24) into the hole of the
gear case/cutter case in order to lock the drive
shaft tube.
Install cutting head on gear case/cutter case of
grass trimmers. The mounting nut is left-hand-
threaded. Turn clockwise to loosen/counter-
clockwise to tighten.
24
Fig. 11
NOTE
For curved drive shaft tube models, the mounting
nut is right-hand-threaded. Turn counter-
clockwise to loosen/clockwise to tighten.
4. Adjusting line length
Set the engine speed as low as possible and tap
the head on the ground. The nylon line will be
drawn out about 1-3/16
˝
(3 cm) with each tap.
(Fig. 12)
Fig. 12
000Book̲CG22EAP2̲US.indb 10
000Book̲CG22EAP2̲US.indb 10
2015/08/05 15:48:35
2015/08/05 15:48:35