Hitachi CG 22EAS, CG 22EAB, GC22EAD User Manual

CG 22EAS (SLP)
CG 22EAS (SL)
CG 22EAS (S)
CG 22EAD (SLP)
CG 22EAD (SL)

Grass Tri m me r/ Br u sh Cutter
Coupe-Herbes/Débroussailleuse
Motoguadañas/Desbrozadoras

CG 22EAB (SLP)

CG22EAS (SLP)

CG 22EAB (L)

SAFETY INSTRUCTIONS AND INSTRUCTION MANUAL

WARNING

IMPROPER OR UNSAFE use of this power tool can result in death or serious bodily injury!

This manual contains important information about product safety. Please read and understand this manual
BEFORE operating the power tool. Please keep this manual available for other users and owners before they
use the power tool. This manual should be stored in safe place.
WARRANTY: CG22EAB(SLP),
CG22EAB(L) are NOT intended for commercial use, and therefore, NO warranty is provided to their
commercial applications and rental applications.

INSTRUCTIONS DE SECURITE ET MODE D’EMPLOI

AVERTISSEMENT

Une utilisation INCORRECTE OU DANGEREUSE de cet outil motorisé peut entraîner la mort ou de
sérieuses blessures corporelles !
Ce mode d’emploi contient d’importantes informations à propos de la sécurité de ce produit. Prière de
lire et de comprendre ce mode d’emploi AVANT d’utiliser l’outil motorisé. Garder ce mode d’emploi à la
disponibilité des autres utilisateurs et propriétaires avant qu’ils utilisent l’outil motorisé. Ce mode d’emploi
doit être conservé dans un endroit sûr.
GARANTIE : Les modèles CG22EAB(SLP) et
CG22EAB(L) NE sont PAS destinés à un usage commercial, par conséquent, AUCUNE garantie n’est
fournie concernant toute utilisation commerciale ou locative.

INSTRUCCIONES DE SEGURIDAD Y MANUAL DE INSTRUCCIONES

ADVERTENCIA

¡La utilización INAPROPIADA O PELIGROSA de esta herramienta eléctrica puede provocar lesiones
graves o la muerte!
Este manual contiene información importante sobre la seguridad del producto. Lea y comprenda este manual
ANTES de utilizar la herramienta eléctrica. Guarde este manual para que puedan leerlo otras personas
antes de utilizar la herramienta eléctrica. Este manual debe ser guardado en un lugar seguro.
GARANTÍA: CG22EAB(SLP),
LOS CG22EAB(L) no están destinados a uso comercial y, por lo tanto, NO se garantizan sus aplicaciones
comerciales y aplicaciones de alquiler.

English

MEANINGS OF SYMBOLS

NOTE: Some units do not carry them.

Symbols

WARNING
The following show symbols used for the machine. Be sure that you understand
their meaning before use.

It is important that you read, fully
understand and observe the
following safety precautions and
warnings. Careless or improper
use of the unit may cause
serious or fatal injury.

Shows maximum shaft
speed. Do not use the cutting
attachment whose max rpm
is below the shaft rpm.

Read, understand and follow all
warnings and instructions in this
manual and on the unit.

Always wear eye, head and ear
protectors when using this unit.

Do not use metal/rigid blades
when this sign is shown on the
unit.

Keep all children, bystanders
and helpers 50 ft (15 m)
away from the unit. If anyone
approaches you, stop the
engine and cutting attachment
immediately.

Be careful of thrown objects.

Before using your machine

• Read the manual carefully.

• Check that the cutting equipment is correctly assembled and adjusted.

• Start the unit and check the carburetor adjustment. See “MAINTENANCE”.

Contents

WHAT IS WHAT ....................................................3

WARNINGS AND SAFETY INSTRUCTIONS ........ 4

WARRANTY .......................................................... 5

2

SPECIFICATIONS ................................................. 6

ASSEMBLY PROCEDURES .................................7

OPERATING PROCEDURES .............................. 11

MAINTENANCE .................................................. 14

Gloves should be worn
when necessary, e.g.,
when assembling cutting
equipment.

Use anti-slip and sturdy
footwear.

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.

Indicate handle location. Do
not attach handle above this
point.

Indicates blade guard
location for a trimmer head or
semi-auto cutting head.

English

WHAT IS WHAT

Since this manual covers several models, there may
be some diff erence between pictures and your unit.
Use the instructions that apply to your unit.

1. Fuel cap

2. Throttle trigger

3. Starter handle

4. Blade guard

5. Cutting attachment

6. Drive shaft tube

7. Handle

8. Suspension eyelet

9. Ignition switch

10. Harness

11. Throttle trigger lockout

12. Choke lever

13. Engine

14. Angle transmission

15. Joint case

16. Combi box spanner

17. Handling instructions

9
11

2

7

6

5

14

4

7

6

5

4

9

7

6

5

4

13

8

13

2

13

11

2

12

10

13

9

7

11

16

3

1

17

14

5

14

5

15

6

2

4

13

7

9

11

6

2

4

3

English

WARNINGS AND SAFETY
INSTRUCTIONS

Operator safety

○ Always wear a safety face shield or goggles.
○ Always wear heavy, long pants, boots and

gloves. Do not wear loose clothing, jewelry, short
pants, sandals or go barefoot. Secure hair so it is
above shoulder length.

○ Do not operate this tool when you are tired,

ill or under the infl uence of alcohol, drugs or
medication.

○ Never let a child or inexperienced person operate

the machine.

○ Wear hearing protection. Pay attention to your

surroundings. Be aware of any bystanders who
may be signaling a problem. Remove safety
equipment immediately upon shutting off engine.

○ Wear head protection.
○ Never start or run the engine inside a closed

room or building. Breathing exhaust fumes can
kill.

○ Keep handles free of oil and fuel.
○ Keep hands away from cutting equipment.
○ Do not grab or hold the unit by the cutting

equipment.

○ When the unit is turned off , make sure the cutting

attachment has stopped before the unit is set
down.

○ When operation is prolonged, take a break from

time to time so that you may avoid possible
Hand-Arm Vibration Syndrome (HAVS) which is
caused by vibration.

WARNING

● Antivibration systems do not guarantee that
you will not sustain Hand-Arm Vibration
Syndrome or carpal tunnel syndrome.
Therefore, continual and regular users
should monitor closely the condition of
their hands and fi ngers. If any symptoms
of the above appear, seek medical advice
immediately.

● If you are using any medical electric/
electronic devices such as a pacemaker,
consult your physician as well as the device
manufacturer prior to operating any power
equipment.

Unit/machine safety

○ Inspect the entire unit/machine before each use.

Replace damaged parts. Check for fuel leaks and
make sure all fasteners are in place and securely
tightened.

○ Replace parts that are cracked, chipped or

damaged in any way before using the unit/
machine.

○ Make sure the safety guard is properly attached.
○ Keep others away when making carburetor

adjustments.

○ Use only accessories as recommended for this

unit/machine by the manufacturer.

WARNING

Never modify the unit/machine in any way.

Do not use your unit/machine for any job
except that for which it is intended.

Fuel safety

○ Mix and pour fuel outdoors and where there are

no sparks or fl ames.

○ Use a container approved for fuel.
○ Do not smoke or allow smoking near fuel or the

unit/machine or while using the unit/machine.

○ Wipe up all fuel spills before starting engine.
○ Move at least 10 ft (3 m) away from fueling site

before starting engine.

○ Stop engine before removing fuel cap.
○ Empty the fuel tank before storing the unit/

machine. It is recommended that the fuel be
emptied after each use. If fuel is left in the tank,
store so fuel will not leak.

○ Store unit/machine and fuel in area where fuel

vapors cannot reach sparks or open fl ames
from water heaters, electric motors or switches,
furnaces. etc.

WARNING

Fuel is easy to ignite or get explosion or

inhale fumes, so that pay special attention
when handling or fi lling fuel.

Cutting safety

○ Do not cut any material other than grass and

brush.

○ Inspect the area to be cut before each use.

Remove objects which can be thrown or become
entangled.

○ For respiratory protection, wear an aerosol

protection mask when cutting the grass after
insecticide is scattered.

○ Keep others including children, animals,

bystanders and helpers outside the 50 ft (15 m)
hazard zone. Stop the engine immediately if you
are approached.

○ Always keep the engine on the right side of your

body.

○ Hold the unit/machine fi rmly with both hands.
○ Keep fi rm footing and balance. Do not over-

reach.

4

English

○ Keep all parts of your body away from the muffl er

and cutting attachment when the engine is
running.

○ Keep cutting attachment below waist level.
○ When relocating to a new work area, be sure to

shut off the machine and ensure that all cutting
attachments are stopped.

○ Never place the machine on the ground when

running.

○ Always ensure that the engine is shut off and any

cutting attachments have completely stopped
before clearing debris or removing grass from the
cutting attachment.

○ Always carry a fi rst-aid kit when operating any

power equipment.

○ Never start or run the engine inside a closed

room or building and/or near infl ammable liquids.
Breathing exhaust fumes can kill.

Maintenance safety

○ Maintain the unit/machine according to

recommended procedures.

○ Disconnect the spark plug before performing

maintenance except for carburetor adjustments.

○ Keep others away when making carburetor

adjustments.

○ Use only genuine Hitachi replacement parts as

recommended by the manufacturer.

Transport and storage

○ Carry the unit/machine by hand with the engine

stopped and the muffl er away from your body.

○ Allow the engine to cool, empty the fuel tank,

and secure the unit/machine before storing or
transporting in a vehicle.

○ Empty the fuel tank before storing the unit/

machine. It is recommended that the fuel be
emptied after each use. If fuel is left in the tank,
store so fuel will not leak.

○ Store unit/machine out of the reach of children.
○ Clean and maintain the unit carefully and store it

in a dry place.

○ Make sure engine switch is off when transporting

or storing.

○ When transporting in a vehicle, cover blade with

blade cover.

WARNING

Indicates a strong possibility of severe

personal injury or loss of life, if instructions
are not followed.

CAUTION

Indicates a possibility of personal injury or

equipment damage, if instructions are not
followed.

NOTE

Helpful information for correct function and use.

CAUTION

Do not disassemble the recoil starter. You

may get a possibility of personal injury with
recoil spring.

WARRANTY

The warranties provided by Hitachi Koki U.S.A., Ltd.
are explained in the warranty card enclosed with this
product titled “Hitachi Outdoor Power Equipment
Limited Warranty”.
Models CG22EAB(SLP) and CG22EAB(L) are NOT
intended for commercial use, and therefore, NO
warranty is provided to their commercial applications
and rental applications. Therefore, the two year
warranty for “the fi rst commercial end user” and one
year warranty for “rental applications” mentioned in
the warranty card are provided on CG22EAS(SLP),
CG22EAS(SL), CG22EAS(S), CG22EAD(SLP) and
CG22EAD(SL), but NOT on CG22EAB(SLP) and
CG22EAB(L).

If situations occur which are not covered in this
manual, take care and use common sense. Contact
your Hitachi dealer if you need assistance. Pay
special attention to statements preceded by the
following words:

5

English

SPECIFICATIONS

CG22EAS (SLP)

Model

Engine Size (cu. in.) 1.27 (21.1 ml)

Spark Plug Champion CJ6 or equivalent

Fuel Tank Capacity (fl . oz) 14.9 (0.44 l)

Dry Weight (Ibs) 9.7 (4.4 kg) 10.4 (4.7 kg) 10.4 (4.7 kg)

Sound pressure
level LpA (dB (A))
(EN27917)

Measured sound
power level LwA
(dB (A))

Measured sound
power level LwA
(dB (A))

Guaranteed
sound power
level LwA (dB (A))

Equivalent

(ISO10884)
Equivalent

(2000/14/EC)
Racing

(2000/14/EC)
Racing

CG22EAS (SL)

90 89 91 90 90

104 104 103 104 104

107 107 106 107 107

108 109 108 108 109

CG22EAS (S)

CG22EAD (SLP)

CG22EAD (SL)

CG22EAB (SLP)

CG22EAB (L)

8.8 (4.0 kg)

8.6 (3.9 kg)

Vibration level (m/s2)
(ISO7916)

Equivalent (Front / Left handle)
Equivalent (Rear / Right handle)

Idling (Front / Left handle)
Idling (Rear / Right handle)

Racing (Front / Left handle)
Racing (Rear / Right handle)

NOTE

Equivalent noise level/vibration level are calculated as the time-weighted energy total for noise/vibration

levels under various working conditions with the following time distribution: 1/2 Idle, 1/2 racing.

* All data subject to change without notice.

6

6.7

4.1

4.9

3.3

8.0

4.7

4.5

4.8

2.7

3.4

5.8

5.9

4.7

4.3

2.7

3.4

6.1

5.1

7.7

4.7

4.1

3.7

10.1

5.5

6.5

6.9

5.3

3.8

7.6

8.9

English

ASSEMBLY PROCEDURES

Drive shaft to engine (Fig. 1)

Loosen tube locking bolt (1) about ten turns so that
the bolt point will not obstruct drive shaft tube to be
inserted. When inserting drive shaft tube, hold the
tube locking bolt outward preventing inside fi tting
from obstructing as well.

Insert the drive shaft into the clutch case of the
engine properly until the marked position (2) on the
drive shaft tube meets the clutch case.
Some models may come with the drive shaft already
installed.

1

2

Fig. 1

NOTE

When it is hard to insert drive shaft up to the

marked position on the drive shaft tube, turn
drive shaft by the cutter mounting end clockwise
or counter-clockwise. Tighten tube locking bolt
lining up the hole in the shaft tube. Then tighten
clamp bolt securely.

Installation of attachment

1. Join the attachment in place of it.

2. Make sure the lock pin (3) fi ts in the location hole
(4) of tube and that the tube will not come off .
(Fig. 2)

3. Tighten the knob nut (5) securely. (Fig. 2)

1

2

Installation of handle

WARNING

When you use steel/rigid blades on straight

shaft trimmers or brush cutters, always use
a barrier bar (6) and shoulder harness with
the loop handle. (Fig. 3)

6

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.

NOTE

If your unit has handle location label on drive

shaft tube, follow the illustration.

Remove the handle bracket (7) from the assembly.
(Fig. 4)
Place the handles and attach the handle bracket with
four bolts lightly. Adjust to appropriate position. Then
attach it fi rmly with the bolts.

7

3

5

4

Fig. 4

Fig. 2

7

English

Attach the protection tube to the drive shaft or handle
using cord clamps (8). (Fig. 5)

8

Fig. 5

NOTE

If the protection tube is set apart from the handle

or pipe, it will be caught by something during
operation and it may cause serious injury. Do not
set the protection tube apart from the handle or
pipe.

Throttle wire / stop cord

Press the upper tab (9) and open the air cleaner
cover. (Fig. 6)

9

If the throttle outer end (10) is threaded on your unit,
screw it and the earth terminal (11) (if so equipped)
into the cable adjuster stay (12) all the way, and then
tighten this cable end using the adjuster nut (13)
against the cable adjuster stay (12).
Connect throttle wire end (14) to carburetor (15)
and install swivel cap (16) (if so equipped) where is
included in tool bag, onto swivel (15) (Fig. 8).
Some models may come with the parts installed.

12

11

10

Installation of blade guard (Fig. 9, 10, 10-1, 11)

15

13

Fig. 8

16

14

Fig. 6

Connect stop cords. (Fig. 7)

Fig. 7

8

Fig. 9

Fig. 10

Fig. 10-1

Fig. 11

NOTE

The guard bracket may come already mounted to

the gear case on some models.

Install the blade guard on drive shaft tube against
angle transmission. Tighten the guard bracket fi rmly
so that the blade guard does not swing or move
down during operation.

English

NOTE

○ When attaching the guard extension to the blade

guard, the sharp line limiter must be removed
from the blade guard, (if so installed).

○ If your unit has guard location label on drive shaft

tube, follow the indication.

○ To remove the guard extension, refer to the

drawings. Wear gloves as the extension has a
sharp line limiter, then push the four square tabs
on the guard one by one in order. (Fig. 13)

Install the blade guard to the guard bracket, which
also secures the guard to the gear case using the
two guard mounting screws.

CAUTION

Some blade guards are equipped with sharp

line limiters. Be careful with handling it.

When using a trimmer head with two piece type
blade guard, attach the guard extension to the blade
guard. (Fig. 12)

Fig. 12

Fig. 13

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 rpm).

9

English

Specifi cations

Code No.

6696454

6696597

Applicable nylon cord

2. Precautions

○ The case must be securely attached to the cover.
○ Check the cover, case and other components for

○ Check the case and button for wear.

If the wear limit mark (17) on the case is no longer

Type of
attaching
screw

Female
screw

Female
screw

Cord diameter: 1/8˝ (Φ3.0 mm) Length: 6.5 ft (2 m)
Cord diameter: 3/22˝ (Φ2.4 mm) Length: 13 ft (4 m)

cracks or other damage.

visible or there is a hole in the bottom (18) of the
button, change the new parts immediately. (Fig.

14)

17

Direction of
rotation

Counterclockwise

Clockwise

18

Size of
attaching
screw

M10×P1.25­LH

M8×P1.25­RH

19

Fig. 15

For curved shaft models, the mounting nut is right­hand-threaded. Turn counterclockwise to loosen/
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.

○ Insert Allen wrench (19) into the hole of the gear

case in order to lock the cutter holder.

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. 16)

Fig. 14

○ The cutting head must be securely mounted to

the unit’s gear case.

○ For outstanding performance and reliability,

always use Hitachi nylon cutting line. Never
use wire or other materials that could become a
dangerous projectile.

○ If the cutting head does not feed cutting line

properly, check that the nylon line and all
components are properly installed. Contact your
Hitachi dealer if you need assistance.

3. Installation (Fig. 15)
○ Install cutting head on gear case of grass

trimmers/brush cutters. The mounting nut is
left-hand-threaded. Turn clockwise to loosen/
counterclockwise to tighten.

10

Fig. 16

Also, you can extend the nylon line by hand but

the engine must be completely stopped. (Fig. 17)

Fig. 17

○ Adjust the nylon line to the proper length

of 4-11/32˝–5-1/2˝ (11–14) cm before each
operation.

English

Installation of cutting blade (Fig. 18)

(If so equipped)
When installing a cutting blade, make sure that there
are no cracks or any damage in it and that the cutting
edges are facing the correct direction.

19

21

20

22

23

Fig. 18

NOTE

○ When installing cutter holder cap (20), be sure to

set concave side upward.

○ Insert the alien wrench (19) into the hole of the

angle transmission in order to lock the cutter
holder (21). Please note that the cutter fi xing bolt
or nut (22) has left-handed threads, (clockwise to
loosen/ counter-clockwise to tighten). Tighten the
fi xing bolt or nut with the box wrench.

○ If your unit is of a nut securing type and equipped

with a cotter pin, the blade must be retained with
a new pin (23) each time installed. (Fig. 19)

23

Fig. 19

CAUTION

● Before operation, make sure the blade has
been properly installed.

● If your unit is equipped with protection cover
under a cutting blade, check it for wear or
cracks before operation. If any damage or
wear is found, replace it, as it is an article of
consumption.

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.

OPERATING PROCEDURES

Fuel (Fig. 20)

Fig. 20

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 contains highly fl ammable and it is
possible to get the serious personal injury
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 the oil bottle for the
ratio or Hitachi dealer.

○ 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 use BIA or TCW (2-stroke
water-cooling type) mixed oil.

○ Never use multi-grade oil (10 W/30) or waste oil.
○ Always mix fuel and oil in a separate clean

container.

Always start by fi ling half the amount of fuel, which
is to be used. Then add the whole amount of oil. Mix
(shake) the fuel mixture. Add the remaining amount
of fuel.
Mix (shake) the fuel-mix thoroughly before fi lling the
fuel tank.

11

English

Fueling

WARNING

● Always shut off the engine before refueling.

● Slowly open the fuel tank, when fi lling up

with fuel, so that possible over-pressure
disappears.

● Tighten the fuel cap carefully, after fueling.

● Always move the trimmer at least 10 ft (3 m)

from the fueling area before starting.

● Always wash any spilled fuel from clothing
immediately with soap.

● Be sure to check for any fuel leakage after
refueling.

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. Set ignition switch (24) to ON position. (Fig. 21,

22)

24

26

25

39

Fig. 23

2. Set choke lever (27) to CLOSED position (A).
(Fig. 24)

B

A

27

Fig. 24

3. Pull recoil starter briskly, taking care to keep the
handle in your grasp and not allowing it to snap
back. (Fig. 25)

Fig. 21

24

Fig. 22

* Push priming bulb (25) several times so that fuel

fl ows through return pipe (39). (Fig. 23)

12

Fig. 25

4. 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

2 to 5.

5. Then allow the engine about 2–3 minutes to warm
up before subjecting it to any load.

English

Cutting (Fig. 26, 27, 28)

○ When cutting, operate engine at over 6,500 rpm.

Extended time of use at low rpm may wear out
the clutch prematurely.

○ Cut grass from right to left.
○ Cut grass from left to right (only curve shaft

model).

○ 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 (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 50 ft (15 m).

Fig. 27

50 ft

(15 m)

Fig. 28

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. 29, 30)

Decrease engine speed and run at an idle for a few
minutes, then turn off ignition switch (24).

24

26

Fig. 26

Fig. 29

13

English

Carburetor adjustment (Fig. 31)

24

Fig. 30

For models with an engine ignition switch, keep the
ignition switch pressed until the engine comes to a
complete stop.

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 6,500 rpm.

Extended time of use at low rpm may wear out
the clutch prematurely.

○ Cut grass from right to left.
○ Cut grass from left to right (only curve shaft

model).

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 4,500 rpm).

MAINTENANCE

MAINTENANCE, REPLACEMENT OR REPAIR
OF THE EMISSION CONTROL DEVICES AND
SYSTEMS MAY BE PERFORMED BY ANY NON­ROAD ENGINE REPAIR ESTABLISHMENT OR
INDIVIDUAL.

Fig. 31

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 (counter­clockwise) 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 your Hitachi dealer.

NOTE

Standard Idle rpm is 2,800 – 3,200 rpm.

WARNING

When the engine is idling the cutting

attachment must under no circumstances
rotate.

14

English

Air fi lter (Fig. 32)

The air fi lter must be cleaned from dust and dirt in
order to avoid:

○ Carburetor malfunctions
○ Starting problems
○ Engine power reduction
○ Unnecessary wear on the engine parts
○ Abnormal fuel consumption

Clean the air fi lter daily or more often if working in
exceptionally dusty areas.

28

Fig. 32

Cleaning the air fi lter

Open the air fi lter cover and the fi lter (28). Rinse it in
warm soap suds. Check that the fi lter is dry before
reassembly. An air fi lter that has been used for some
time cannot be cleaned completely. Therefore,
it must regularly be replaced with a new one. A
damaged fi lter must always be replaced.

Fuel fi lter (Fig. 33)

Drain all fuel from fuel tank and pull fuel fi lter line
from tank. Pull fi lter element out of holder assembly
and rinse element in warm water with detergent.
Rinse thoroughly until all traces of detergent are
eliminated. Squeeze, do not wring, away excess
water and allow element to air dry.

NOTE

If element is hard due to excessive dirt buildup,

replace it.

Spark plug (Fig. 34)

The spark plug condition is infl uenced by:

○ An incorrect carburetor setting
○ Wrong fuel mixture (too much oil in the gasoline)
○ A dirty air fi lter
○ Hard running conditions (such as cold weather)

These factors cause deposits on the spark plug
electrodes, which may result in malfunction and
starting diffi culties. If the engine is low on power,
diffi cult to start or runs poorly at idling speed, always
check the spark plug fi rst. If the spark plug is dirty,
clean it and check the electrode gap. Re-adjust
if necessary. The correct gap is 0.024˝ (0.6 mm).
The spark plug should be replaced after about 100
operation hours or earlier if the electrodes are badly
eroded.

0.024˝
(0.6 mm)

Fig. 34

NOTE

In some areas, local law requires using a resistor

spark plug to suppress ignition signals. If this
machine was originally equipped with resistor
spark plug, use same type of spark plug for
replacement.

Flexible drive shaft (Fig. 35)

Flexible drive shaft should be removed and
lubricated with good quality lithium grease every
20 hours. To remove the fl exible shaft, fi rst remove
screw (29), loosen bolt (30) and remove the gear
case then pull the shaft out of the drive shaft pipe.
Clean the shaft off and apply a generous coat of
lithium grease to it and insert if back into the drive
shaft pipe, turn it unit it drops into place then install
the gear case, install & tighten screw (29) and screw
(30).

Fig. 33

15

English

Wind both halves of the line on the reel in the

same direction, keeping each half of the line on
its own side of the partition. (Fig. 38)

30

29

Fig. 35

Angle transmission (Fig. 36)

Check angle transmission or angle gear for
grease level about every 50 hours of operation by
removing the grease fi ller plug on the side of angle
transmission.
If no grease can be seen on the fl anks of the gears,
fi ll the transmission with quality lithium based
multipurpose grease up to 3/4. Do not completely fi ll
the transmission.

Fig. 36

Semi-auto cutting head

4˝ (10 cm)

32

Fig. 38

(4) Push each line into the stopper holes (33),

leaving the loose ends approx. 4˝ (10 cm) in
length. (Fig. 39)

4˝ (10 cm)

33

4˝ (10 cm)

Fig. 39

(5) Insert both loose ends of the line through the cord

guide (34) when placing the reel in the case. (Fig.

40)

33

Nylon line replacement

(1) Remove the case (31) by fi rmly pushing inward

the locking tabs with your thumbs as shown in
Fig. 37.

31

Fig. 37

(2) After removing the case, take out the reel and

discard the remaining line.

(3) Fold the new nylon line unevenly in half as shown

in picture.

Hook the U-shaped end of the nylon line into the

groove (32) on the center partition of the reel.

16

34

Fig. 40

NOTE

When placing a reel in the case, try to line up the

stopper holes (33) with the cord guide (34) for
easier line release later.

English

(6) Place the cover over the case so that the cap

locking tabs (35) on the case meet the long holes
(36) on the cover. Then push the case securely
until it clicks into place. (Fig. 41)

36

35

Fig. 41

(7) The initial cutting line length should be approx.

4-11/32˝–5-1/2˝ (11–14 cm) and should be equal
on both sides. (Fig. 42)

4-11/32˝–5-1/2˝

(11-14 cm)

Fig. 42

4-11/32˝–5-1/2˝

(11-14 cm)

○ When replacing blade, purchase one

recommended by Hitachi, with a 25.4 mm (one
inch) fi tting hole.

○ When installing a saw blade (38), always face

the stamped side up. In the case of a 3 or 4 tooth
blade (37), it can be used on either side.

○ Use the correct blade for the type of work.
○ When replacing blades, use appropriate tools.
○ When cutting edges become dull, re-sharpen

or fi le as shown in the illustration. Incorrect
sharpening may cause excessive vibration.

○ Discard blades that are bent, warped, cracked,

broken or damaged in any way.

NOTE

When sharpening blade it is important to maintain

an original shape of radius at the base of the
tooth to avoid cracking.

Maintenance schedule

Below you will fi nd some general maintenance
instructions. For further information please contact
your Hitachi dealer.

Daily maintenance

○ Clean the exterior of the unit.
○ Check that the harness is undamaged.
○ Check the blade guard for damage or cracks.

Change the guard in case of impacts or cracks.

○ Check that the cutting attachment is properly

centred, sharp, and without cracks. An off -centre
cutting attachment induces heavy vibrations that
may damage the unit.

○ Check that the cutting attachment nut is

suffi ciently tightened.

○ Make sure that the blade transport guard is

undamaged and that it can be securely fi tted.

○ Check that nuts and screws are suffi ciently

tightened.

Blade (Fig. 43)

WARNING

Wear protective gloves when handling or

performing maintenance on the blade.

37

○ Use a sharp blade. A dull blade is more likely to

snag and thrust. Replace the fastening nut if it is
damaged and hard to tighten.

38

Fig. 43

Weekly maintenance

○ Check the starter, especially the cord and return

spring.

○ Clean the exterior of the spark plug.
○ Remove it and check the electrode gap. Adjust it

to 0.024˝ (0.6 mm), or change the spark plug.

○ Check that the angle gear is fi lled with grease up

to 3/4.

○ Clean the air fi lter.

Monthly maintenance

○ Rinse the fuel tank with gasoline.
○ Clean the exterior of the carburetor and the space

around it.

○ Clean the fan and the space around it.

17

Français

SIGNIFICATION DES SYMBOLES

REMARQUE:

Certains appareils n’en sont pas pourvus.

Symboles

ATTENTION
Les symboles suivants sont utilisés pour l’outil. Bien se familiariser avec leur
signifi cation avant d’utiliser l’outil.

Il est essentiel de lire et de comprendre
parfaitement les consignes de sécurité
et autres avertissements suivants.
Vous devez les observer strictement.
L’utilisation inattentive ou inadéquate
de cette machine risque de provoquer
des blessures graves ou fatales.

Indique la vitesse maximale de l’arbre.
N’utilisez pas d’outil de coupe dont la
vitesse de rotation (nombre de tours/
minute) est inférieure à la vitesse
de rotation de l’arbre.

Lisez attentivement et respectez toutes les
instructions et tous les avertissements donnés
dans ce manuel et sur le produit.

Utilisez toujours des lunettes de protection
ainsi qu’un casque et des protections
d’oreilles lorsque vous utilisez ce
produit.

N’utilisez pas de lames métalliques/
rigides lorsque ce signe apparaît sur
la machine.

Maintenez les enfants, spectateurs
et aides à plus de 50 pieds (15 m) de
l’appareil. Si quelqu’un s’approche de
vous, coupez immédiatemment le moteur
et arrêtez l’outil de coupe.

Faites attention aux projections
d’objets.

Avant l’utilisation de votre nouvelle machine

• Lisez attentivement le manuel d’utilisation.

• Vérifi ez que l’équipement de coupe est monté et réglé correctement.

• Démarrez la machine et vérifi ez le réglage du carburateur. Voir la section “ENTRETIEN”.

Sommaire

DESCRIPTION ..................................................... 19

PRÉCAUTIONS ET CONSIGNES DE SÉCURITÉ

GARANTIE ........................................................... 21

18

CARACTÉRISTIQUES ......................................... 22

... 20

MONTAGE ........................................................... 23

UTILISATION ........................................................ 27

ENTRETIEN ......................................................... 30

Au besoin, utilisez des gants,
notamment lors du montage de
l’équipement de coupe.

Utilisez des chaussures antidérapantes
et solides.

Une réaction de poussée de la lame peut
survenir lorsque la lame en rotation entre
en contact avec un objet solide dans la
zone critique. Une réaction dangereuse
peut alors survenir, provoquant un
mouvement incontrôlé et violent de
toute la machine et de l’utilisateur.
Cette réaction est appelée rebond.
Elle peut faire perdre le contrôle de la
machine et être à l’origine de blessures
sérieuses, voire fatales. Cette réaction
incontrôlée de la lame risque davantage
de survenir lorsque l’opérateur ne peut
voir le matériau à couper.

Indique l’emplacement de la poignée.
Ne positionnez pas la poignée au­dessus de ce point.

Indique l’emplacement du protège­lame pour un coupe-herbe ou une tête
de coupe semi-automatique.