Assembly Procedures; Operating Procedures - Hitachi CG 24EC (S) Handling Instructions Manual

ASSEMBLY PROCEDURES

Installation of handle
(1) Loop handle type (Fig. 3)
Attach the handle to the drive shaft tube with the angle
towards the engine.
Adjust the location to the most comfortable position
before operation.
Make sure to securely attach the handle with the 2 bolts.
NOTE
If your unit has handle location label (8) on drive shaft
tube, follow the illustration.
(2) Bike handle type (Fig. 4)
Remove the handle bracket (9) from the assembly.
Place the handle and attach the handle bracket with four
bolts lightly. Adjust to appropriate position. Then attach it
fi rmly with the bolts.
Installation of harness
(If so equipped)
WARNING
If the product includes a harness, always make sure to
use it.
Attach the harness hook (10) to the hanger (11) on the drive
shaft tube. (Fig. 5)
Adjust the length of the harness for easy operation of the
tool.
NOTE
You may need to adjust the position of the hangar (11)
to balance the unit. To do so, loosen bolt (12) and adjust
the position of hangar (11). After adjusting as necessary,
make sure to securely tighten the bolt (12). (Fig. 5)
Installation of cutting attachment guard
WARNING
If an incorrect or faulty guard is fi tted, this may cause
serious personal injury.
CAUTION
Some cutting attachment guards are equipped with
sharp line limiters. Be careful with handling it.
NOTE
○ When using a trimmer head with two piece type cutting
attachment guard, attach the guard extension to the
cutting attachment guard, then tighten the bolt (13).
(Fig. 6)
○ The guard extension is already attached to the cutting
attachment guard at the time of purchase.
○ The guard bracket may come already mounted to the
gear case on some models.
Align the cutting attachment guard with the guard bracket
and secure it to the drive shaft tube, using the bolt and cover
bracket. (Fig. 7)
Installation of cutting attachment
WARNING
○ Install the cutting attachment properly and securely as
instructed in the handling instructions.
If not attached properly or securely, it may come off and
cause serious and/or fatal injury.
○ 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 4500 min
Specifi cations
Code
No.
6696454 Female screw
Applicable nylon cord
Cord diameter: Φ3.0 mm Length: 2 m
Cord diameter: Φ2.4 mm Length: 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 (14) on the case is no longer visible
or there is a hole in the bottom (15) of the button, change
the new parts immediately. (Fig. 8)
○ 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 off and become a dangerous
projectile.
3. Installation (Fig. 9)
Insert the allen wrench (16) 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/brush cutters. The mounting nut is left-hand-
threaded. Turn clockwise to loosen/counter-clockwise to
tighten.
NOTE
Since the cutter holder cap is not used here, keep it for
when a metal blade is used, if so equipped.
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 3 cm with each tap. (Fig. 10)
Also, you can extend the nylon line by hand but the
engine must be completely stopped. (Fig. 11)
Adjust the nylon line to the proper length of 11–14 cm
before each operation.

OPERATING PROCEDURES

Fuel (Fig. 12)
WARNING
○ The trimmer is equipped with a two-stroke engine.
Always run the engine on fuel, which is mixed with oil.
Provide good ventilation, when fueling or handling fuel.
○ Fuel is highly fl ammable and it is possible to get seriously
injured when inhaling or spilling on your body.
Always pay attention when handling fuel. Always have
good ventilation when handling fuel inside building.
Fuel
○ Always use branded 89 octane unleaded gasoline.
○ Use genuine two-cycle oil or use a mix between 25:1 to
50:1, please consult about the mixture ratio to Hitachi
Authorized Service Centers.
○ If genuine oil is not available, use an anti-oxidant added
quality oil expressly labeled for air-cooled 2-cycle engine
use (JASO FC GRADE OIL or ISO EGC GRADE). Do not
).
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use BIA or TCW (2-stroke water-cooling type) mixed oil.
9
Type of
Direction of
attaching
rotation
screw
Counter-
clockwise
English
Size of
attaching
screw
M10xP1.25-
LH