Hitachi CG 23EC (LB) Handling Instructions Manual

カテゴリー
草刈り機
タイプ
Handling Instructions Manual

このマニュアルも適しています

Handling instructions
급 설
Hướng dn s dng
คูมือการใชงาน
CG 23EC (SL) / CG 23EC (SLB)
en
zh
ko
vi
th
ar
CG23EC (SL)
en
zh
ko
vi
th
ar
2
1
23
1/3
2/3
M
T
U
V
S
CG23EC(SL)
G
R
D
CG23EC(SLB)
H
B
N
P
F
J
1
2
3
4
5
6
7
P
D
F
Q
G
H
I
J
N
B
E
L
O
A
C
P
K
W
3
456
7910
81112
13 14
12
13
15
14
16
17
18
17
9
10
11
12
8
4
15 16 17
18 19 20
21 22 23
24 25 26
1/3
2/3
22
17
18
19
20
21
23
24
25
AA
B
B
26
5
27 28 29
30 31 32
33 34 35
36 37 38
15
31
10 cm
10 cm
10 cm
32
32
33
35
34
23
27
0.6 mm
28
29
30
6
39 40
11-14 cm 11-14 cm
1.9-2.2 cm
36
English
7
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.
Brush Cutter / Grass Trimmer Guaranteed sound power level
It is important that you read, fully understand
before use, and observe the following safety
precautions and warnings. Careless or improper
use of the unit may cause serious or fatal injury.
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 di cult
to see the material to be cut.
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.
Hot Surface – Contact with hot surface can
cause serious burns.
Do not use metal/rigid blades when this sign is
shown on the unit.
Indicate handle location. Arrows which show
limits for handle positioning.
Keep all children, bystandards and helpers
15 m away from the unit. If anyone approaches
you, stop the engine and cutting attachment
immediately.
Displacement
Be careful of thrown objects. Spark plug
min
-1
Shows maximum shaft speed. Do not use the
cutting attachment whose max rpm is below the
shaft rpm.
Idle
Idling speed
Gloves should be worn when necessary, e.g.,
when assembling cutting equipment.
Speed of output shaft
Use anti-slip and sturdy footwear.
P
Max. engine output
Choke – Run position (Open) Fuel tank capacity
Choke – Start position (Closed)
Dry weight (without fuel, cutting attachment,
harness and cutting attachment guard)
START
On/Start Cutting attachment
STOP
O /Stop
L
pA, eq
ISO22868
Sound pressure level LpA by ISO 22868
Equivalent*
Fuel and oil mixture
L
WA, Ra(M)
2000/14/EC
Measured sound power level LwA by 2000/14/
EC
Racing
Idle speed adjustment
L
WA, Ra(G)
2000/14/EC
Guaranteed sound power level LwA by
2000/14/EC
Racing
Priming pump
a
hv, eq(F)
Vibration level by ISO 22867
Front or Left handle / Equivalent*
English
8
a
hv, eq(R)
Vibration level by ISO 22867
Rear or Right handle / Equivalent*
K
Uncertainty
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”.
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.
WHAT IS WHAT? (Fig. 1)
Since this manual covers several models, there may be
some di erence between pictures and your unit. Use the
instructions that apply to your unit.
A: Fuel cap
B: Throttle trigger
C: Starter handle
D: Cutting attachment guard
E: Guard extension
F: Cutting attachment
G: Drive shaft tube
H: Handle
I: Hanger
J: Ignition switch
K: Spark plug
L: Priming pump
M: Harness
N: Throttle trigger lockout
O: Choke lever
P: Engine
Q: Gear case
R: Cutter case
S: Combi box spanner
T: Handling instructions
U: Goggles
V: Hex bar wrench
W: Top cover
WARNINGS AND SAFETY
INSTRUCTIONS
Pay special attention to statements preceded by the
following words:
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.
Operator safety
Wear head protection (1). (Fig. 2)
Always wear a safety face shield or goggles (2). (Fig. 2)
Wear approved hearing protection (3). (Fig. 2)
Long-term exposure to noise can result in permanent
hearing impairment.
Pay attention to your surroundings. Be aware of any
bystanders who may be signaling a problem.
Remove safety equipment immediately upon shutting o
engine.
Always wear heavy, long-sleeved shirts (4) and long
pants (5) and non-slip boots (6) and gloves (7). (Fig. 2)
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 in uence of alcohol, drugs or medication.
Do not operate the tool at night or under bad weather
conditions when visibility is poor. And do not operate the
tool when it is raining or right after it has been raining.
Working on slippery ground could lead to an accident if
you lose your balance.
Never let a child or inexperienced person operate the
machine.
Do not start the engine if there are any ammables such
as dry leaves, waste paper or fuel in the vicinity.
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.
Gloves should be worn when installing or removing the
cutting attachment. Failure to do so may result in injury.
When the unit is shut o , make sure the cutting
attachment has stopped before the unit is set down.
When operation is prolonged, take a break periodically
so that you may avoid possible Hand-Arm Vibration
Syndrome (HAVS) which is caused by vibration.
WARNING
Always operate the tool with proper protective equipment
and clothing. Failure to do so may result in accidents
such as burns or injuries. (Fig. 2)
Do not touch the spark plug area or high voltage during
operation. Doing so may result in electric shock.
Do not allow children near the tool during operation.
Do not touch the engine, top cover or exhaust vent
during or shortly after operation. Doing so may result in
burn or injury.
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
ngers. If any of the above symptoms 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. Faulty parts may
increase the risk of accidents and may lead to an injury.
Make sure the cutting attachment guard and harness are
properly attached. Do not operate if cutting attachment
guard and harness is not properly attached.
English
9
Keep others away when making carburetor adjustments.
Use only accessories as recommended for this unit/
machine by the manufacturer.
Before operation, make sure that there are no tools such
as the adjustment key or spanner still attached to the
unit.
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.
Non-authorized modi cations and/or accessories may
result in serious personal injury or the death of the
operator or others.
Fuel safety
Mix and pour fuel outdoors and where there are no
sparks or ames.
Use a container approved for fuel.
Move at least 3 m away from fueling site before starting
engine.
Stop engine before removing fuel cap. Do not remove
the fuel cap during operation.
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.
WARNING
Fuel is easy to ignite or get explosion or inhale fumes, so
that pay special attention when handling or lling 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.
Store unit/machine and fuel in area where fuel vapors
cannot reach sparks or open ames from water heaters,
electric motors or switches, furnaces. etc.
When using the unit in dry areas, make sure that re
extinguishing equipment is readily available.
If you shut o the engine for refueling, make sure the unit
has cooled down before adding 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.
Do not operate in areas where there are tree roots or
rocks.
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 15 m hazard zone. Stop the engine
immediately if you are approached.
Please exercise caution as engine startup may be
delayed after pulling the starter handle.
Always keep the engine on the right side of your body.
Hold the unit/machine rmly with both hands.
Keep rm footing and balance. Do not over-reach.
Losing your balance during work may lead to an injury.
Keep all parts of your body away from the mu er and
cutting attachment when the engine is running.
Keep cutting attachment below knee level.
Please exercise caution when operating in areas where
electrical cables or gas pipes are present.
Do not operate the cutting attachment for anything but
clearing grass or bushes. Avoid operations where the
cutting attachment may touch water such as puddles
or dig into dirt. Failure to do so may result in injury or
damage to the unit.
Avoid prolonged use at low speed range in which
vibration is high. Doing so may result in engine damage.
When relocating to a new work area, or inspecting,
adjusting or exchanging the unit’s cutting attachments,
accessories, etc., be sure to shut o the machine and
ensure that all cutting attachments are stopped.
Never place the machine on the ground when running.
Never touch the cutting attachment when it is rotating.
Always ensure that the engine is shut o and any cutting
attachments have completely stopped before clearing
debris or removing grass from the cutting attachment.
Always carry a rst-aid kit when operating any power
equipment.
Turn o the engine and make sure the cutting attachment
has come to a full stop before removing the unit from
your body or before leaving the unit unattended.
If you accidentally bump or drop the unit, inspect it
immediately to make sure there are no damage, cracks
or deformations.
If the tool is operating poorly and produces strange noise
or vibrations, turn o the engine immediately and ask
your dealer to have it inspected and repaired.
Continued use under these conditions could lead to
injury or tool damage.
Use in accordance with local laws and regulations.
WARNING
KICKBACK DANGER (Fig. 3)
When using metal cutting attachments such as blades,
contact with obstacles such as trees or other hard
surfaces with the front or right portion of the spinning
attachment may force the unit to catch on an obstacle,
resulting in a kickback reaction towards the right side of
the operator.
Kickback may occur when the cutting attachment comes
into contact with tree stumps or rocks hidden behind
weeds. Always make sure there are no obstacles hidden
by weeds before starting work.
To minimize the danger of kickbacks when they do occur,
always position the unit to the right side of the body
during operation. With the operator properly positioned
as the cutting attachment rotates, this will reduce the
danger of the unit’s direct contact with the body.
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.
CAUTION
Do not disassemble the recoil starter. There is a
possibility of personal injury with recoil spring.
WARNING
Improper maintenance could result in serious engine
damage or in serious personal injury.
Transport and storage
Carry the unit/machine by hand with the engine stopped
and the mu er away from your body.
Allow the engine to cool, empty the fuel tank, and secure
the unit/machine before storing or transporting. Failure to
do so may result in re or accidents.
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 o when transporting or
storing.
When transporting and storing, either remove the cutting
attachment or place the blade cover over the blade.
English
10
You have to secure the machine during transport to
prevent loss of fuel, damage or injury.
If a warning label cannot be read, peels o or becomes
indistinct, replace it with a new one. To purchase new
labels, contact Hitachi Authorized Service Centers.
If situations occur which are not covered in this manual, take
care and use common sense. Contact Hitachi Authorized
Service Centers if you need assistance.
SPECIFICATIONS
The SPECIFICATIONS of this machine are listed in the table
on page 74.
NOTE
All data subject to change without notice.
ASSEMBLY PROCEDURES
Installation of handle
Loop handle type (Fig. 4)
Attach the handle to the drive shaft tube.
Adjust the location to the most comfortable position before
operation.
Make sure to securely attach the handle with the 4 bolts.
NOTE
If your unit has handle location label (8) on drive shaft
tube, follow the illustration.
Installation of harness
(If so equipped)
WARNING
If the product includes a harness, always make sure to
use it.
Attach the harness hook (9) to the hanger (10) 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 (10)
to balance the unit. To do so, loosen bolt (11) and adjust
the position of hangar (10). After adjusting as necessary,
make sure to securely tighten the bolt (11). (Fig. 5)
Installation of cutting attachment guard
WARNING
If an incorrect or faulty guard is 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 (12).
(Fig. 6)
The guard bracket may come already mounted to the
gear case on some models.
Align the cutting attachment guard with the guard bracket (13)
and secure it to the drive shaft tube, using the bolt. (Fig. 7)
WARNING
Remove the guard extension when using metal or plastic
blades. Failure to do so may result in injury or damage to
the cutting attachment guard.
NOTE
To remove the guard extension, refer to the drawings.
Wear gloves as the extension has a sharp line limiter.
Loosen the bolt (12). Then push the three square tabs on
the guard one by one in order. (Fig. 8)
(CG23EC (SLB))
Insert the cutter case between the guard bracket and cutting
attachment guard, and secure it with the bolt. (Fig. 9)
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 o 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 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 6000 /min).
Speci cations
Code
No.
Type of
attaching
screw
Direction of
rotation
Size of
attaching
screw
6600570 Female screw
Counter-
clockwise
M10xP1.25-
LH
6601272 Female screw Clockwise
M8xP1.25-RH
Applicable nylon cord
Cord diameter: Φ2.4 mm Length: 5 m
2. Precautions
The case must be securely attached to the cover.
Check the cover (14), case (15) and other components
for cracks or other damage. (Fig. 10)
Check the case and button for wear.
If there is a hole in the bottom (16) of the button, change
the new parts immediately. (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 exible, non-metallic line
recommended by the manufacturer. Never use wire or
wire ropes. They can break o and become a dangerous
projectile.
3. Installation
(CG23EC (SL)) (Fig. 11)
Insert the Hex bar wrench (17) into the hole of the gear
case and groove of the Cutter holder (A) (18) in order to
lock the shaft.
Install cutting head on gear case of 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.
(CG23EC (SLB)) (Fig. 12)
Insert the Hex bar wrench (17) into the hole of the cutter
case in order to lock the drive shaft tube.
English
11
Install cutting head on cutter case of grass trimmers.
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 3 cm with each tap. (Fig. 13)
Also, you can extend the nylon line by hand but the
engine must be completely stopped. (Fig. 14)
Adjust the nylon line to the proper length of 11–14 cm
before each operation.
Installation of cutting blade (Fig. 15)
(If so equipped)
Insert the Hex bar wrench (17) into the hole of the gear case
and groove of the Cutter holder (A) (18) in order to lock the
shaft.
Assemble in the following order: Cutter holder (A) (18),
blade (19), cutter holder (B) (20), nut cover (21).
Tighten the xing nut with the combi box spanner with a
tightening torque of 14
±
2 N.m. Please note that the cutter
xing nut (22) has left-handed threads (clockwise to loosen/
counter-clockwise to tighten).
NOTE
When installing cutter holder (B) (20), be sure to set
concave side upward.
When installing or removing a blade, make sure to wear
gloves and place the blade cover over the blade.
CAUTION
Check a nut cover (21) for wear or cracks before
operation. If any damage or wear is found, replace it, as
it is an article of consumption.
WARNING
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.
Remove any surface grit from blade installation ttings
(cutter holder (A) (18), cutter holder (B) (20), nut
cover (21), nut (22)). Failure to do so may result in the
loosening of nuts.
The protrusion of the cutter holder (A) (18) may become
misaligned with the blade (19) while tightening nut
(22). Before operation, make sure the blade has been
properly installed. (Fig. 16)
Rotate the blade by hand and make sure there is no
rocking or abnormal noise. Rocking may cause abnormal
vibrations or result in the loosening of nuts.
OPERATING PROCEDURES
Fuel (Fig. 17)
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 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
use BIA or TCW (2-stroke water-cooling type) mixed oil.
Never use multi-grade oil (10 W/30) or waste oil.
Never mix fuel and oil in machine’s fuel tank. Always mix
fuel and oil in a separate clean container.
Always start by lling half the amount of gasoline, which is
to be used.
Then add the whole amount of oil. Mix (shake) the fuel
mixture. Add the remaining amount of gasoline.
Mix (shake) the fuel-mix thoroughly before lling the fuel
tank.
Mixing amount of two-cycle oil and gasoline
Gasoline (Liter)
Two-cycle oil (ml)
Ratio 50:1 Ratio 25:1
0.5 10 ——— 20
1 20 ——— 40
2 40 ——— 80
4 80 ——— 160
Fueling
WARNING
Always shut o the engine and let it cool for a few
minutes before refueling.
Do not smoke or bring ames or sparks near the fueling
site.
Slowly open the fuel tank, when lling up with fuel, so
that possible over-pressure disappears.
Tighten the fuel tank cap carefully, after fueling.
Always move the unit at least 3 m from the fueling area
before starting.
Always wash any spilled fuel from clothing immediately
with soap.
Be sure to check any fuel leakage after refueling.
Before fueling, in order to remove static electricity from
the main body, the fuel container and the operator,
please touch the ground that is slightly damp.
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
WARNING
Before starting the tool, ensure that the cutting
attachment is not touching any objects or the ground.
Otherwise, the cutting attachment may unexpectedly
rotate and cause an injury.
Ensure that the cutting attachment does not rotate while
the engine is idling. If it does rotate, adjust the idle speed
according to the instructions in “Idle speed adjustment” in
the “MAINTENANCE” section. If the cutting attachment
still rotates after this adjustment, immediately stop the
engine and cease use, then bring the tool to the nearest
Hitachi Authorized Service Center.
(1) Starting the cold engine
1. Set ignition switch (23) to ON position. (Fig. 18)
2. Push priming pump (24) several times so that fuel ows
through return pipe (25). (Fig. 19)
3. Set choke lever (26) to START position (closed) (A).
(Fig. 20)
4. Pull recoil starter briskly, taking care to keep the handle
in your grasp and not allowing it to snap back. (Fig. 21)
5. When you hear the engine want to start, return choke
lever to RUN position (open) (B). (Fig. 20)
6. Pull recoil starter briskly again. (Fig. 21)
NOTE
If engine does not start, repeat procedures from 2 to 5.
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.
English
12
(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 (if so equipped) 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
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)
Cut grass from right to left as the cutting attachment of
the curved drive shaft tube model rotates clockwise.
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 di 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. As the curved drive shaft tube model in particular
is not equipped with a deceleration mechanism, the
possibility of increased rotation speed for the cutting
attachment is high.
(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 di 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 o ignition switch (23).
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 o , 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)
The carburetor is a precision part that mixes air and fuel, and
it is designed to ensure high performance from the engine.
Before the tool is shipped from the factory, its carburetor is
adjusted during a test run. Only make adjustments if it is
necessary because of environmental conditions (the climate
or atmospheric pressure), the type of fuel, the type of two-
cycle oil, etc.
WARNING
Because the carburetor is manufactured with a high
degree of precision, do not disassemble it.
For this product, the only setting of the carburetor that
can be adjusted is the idle speed (T).
Never start the engine without the complete clutch cover
and tube assembled! Otherwise the clutch can come
loose and cause personal injuries.
T = Idle speed adjustment screw.
Idle speed adjustment (T)
WARNING
When the engine is stopped, do not excessively turn
the idle speed adjustment screw (T) in a clockwise
direction. Otherwise, when the engine starts, the cutting
attachment may unexpectedly rotate and cause an
injury.
Do not adjust the idle speed adjustment screw (T) for
any reason other than to adjust the idling.
Run the engine while adjusting the idling.
(1) If the engine stops during idling
Start the engine, and slowly turn the idle speed
adjustment screw (T) in a clockwise direction until it is in
a position at which the engine rotates smoothly. At that
time, ensure that the cutting attachment is not spinning.
(2) If the cutting attachment rotates during idling
Slowly turn the idle speed adjustment screw (T) in a
counter-clockwise direction until it is in a position at
which the cutting attachment does not rotate. At that
time, ensure that the rotation of the engine is smooth.
English
13
WARNING
If the cutting attachment still rotates after adjustment of
the idle speed adjustment screw (T), immediately stop
the engine and cease use, then contact the nearest
Hitachi Authorized Service Center.
Air lter (Fig. 29)
The air lter (27) 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 lter daily or more often if working in
exceptionally dusty areas.
Open the air lter cover and remove the air lter (27). Clean
it.
Check that the lter is dry before reassembly.
An air lter that has been used for some time cannot be
cleaned completely. Therefore, it must regularly be replaced
with a new one. A damaged lter must always be replaced.
NOTE
To put the air lter cover back into place, hook it on the
upper tabs and then attach it.
Fuel lter (Fig. 30)
Remove the fuel lter (28) from the fuel tank, and replace it if
it is dirty.
NOTE
A blocked fuel lter (28) can prevent the supply of fuel and
cause a rotation malfunction of the engine.
Spark plug (Fig. 31)
The spark plug condition is in uenced by:
An incorrect carburetor setting.
Wrong fuel mixture (too much oil in the gasoline)
A dirty air lter.
Hard running conditions (such as cold weather).
These factors cause deposits on the spark plug electrodes,
which may result in malfunction and starting di culties. If
the engine is low on power, di cult to start or runs poorly at
idling speed, always check the spark plug rst.
If the spark plug is dirty, clean it and check the electrode
gap. Re-adjust if necessary. The correct gap is 0.6 mm. The
spark plug should be replaced after about 100 operation
hours or earlier if the electrodes are badly eroded.
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. 32)
(CG23EC (SLB))
Flexible drive shaft should be removed and lubricated with
good quality lithium grease every 20 hours. To remove the
exible shaft, rst remove screw (29), loosen bolt (30) and
remove the cutter case then pull the shaft out of the drive
shaft tube. Clean the shaft o and apply a generous coat of
lithium grease to it and insert if back into the drive shaft tube,
turn it unit it drops into place then install the cutter case,
install & tighten screw (29) and bolt (30).
Gear case (Fig. 33)
Check gear case or angle gear for grease level about every
50 hours of operation by removing the grease ller plug on
the side of gear case.
If no grease can be seen on the anks of the gears, ll the
gear case with quality lithium based multipurpose grease up
to 3/4. Do not completely ll the gear case.
CAUTION
Make sure to remove any dirt or grit when attaching the
plug to its original position.
Before attempting inspection or maintenance of the gear
case, make sure the case has cooled.
Semi-auto cutting head
Nylon line replacement
1. Remove the case (15) by rmly pushing inward the
locking tabs with your thumbs as shown in Fig. 34.
2. After removing the case, take out the reel and discard
the remaining line.
3. Fold the new nylon line unevenly (approx. 10 cm) in half
as shown in picture.
Hook the U-shaped end of the nylon line into the groove
(31) on the center partition of the reel.
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. 35)
4. Push each line into the stopper holes (32), leaving the
loose ends approx. 10 cm in length. (Fig. 36)
5. Insert both loose ends of the line through the cord guide
(33) when placing the reel in the case. (Fig. 37)
NOTE
When placing a reel in the case, try to line up the stopper
holes (32) with the cord guide (33) for easier line release
later.
6. Place the cover over the case so that the cap locking
tabs (35) on the cover meet the long holes (34) on the
case. Then push the case securely until it clicks into
place. (Fig. 38)
7. The initial cutting line length should be approx. 11–14 cm
and should be equal on both sides. (Fig. 39)
Blade (Fig. 40)
WARNING
Wear protective gloves when handling or performing
maintenance on the blade.
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.
When replacing blade, purchase one recommended by
Hitachi, with a 25.4 mm (one inch) tting hole.
In the case of a 3 tooth blade (36), 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 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.
For long-term storage
Drain all fuel from the fuel tank. Start and let engine run until
it stops. Repair any damage which has resulted from use.
Clean the unit with a clean rag, or the use of high pressure
air hose. Put a few drops of two-cycle engine oil into the
cylinder through the spark plug hole, and spin the engine
over several times to distribute oil.
Cover the unit and store it in a dry area.
Maintenance schedule
Below you will nd some general maintenance instructions.
For further information please contact Hitachi Authorized
Service Centers.
English
14
Daily maintenance
Clean the exterior of the unit.
Check that the harness is undamaged.
Check the cutting attachment guard for damage or
cracks. Change the guard in case of impacts or cracks.
Check that the cutting attachment is properly centered,
sharp, and without cracks. An o -center cutting
attachment induces heavy vibrations that may damage
the unit.
Check that the cutting attachment nut is su ciently
tightened.
Make sure that the blade cover is undamaged and that it
can be securely tted.
Check that nuts and screws are su ciently tightened.
Check that the unit is undamaged and free of defects.
Weekly maintenance
Check the starter, especially the cord.
Clean the exterior of the spark plug.
Remove the spark plug and check the electrode gap.
Adjust it to 0.6 mm, or change the spark plug.
Check that the angle gear is lled with grease up to 3/4.
Clean the air 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.
SELECTING ACCESSORIES
The accessories of this machine are listed on page 75.
English
15
SELECTING CUTTING ATTACHMENTS
Recommended accessories for each model are presented in the table below.
For purchases, contact Hitachi Authorized Service Centers.
Please check carefully as those accessories not marked with “
” cannot be attached.
List of recommended accessories
Type Name
Speci cation LOOP HANDLE
Diameter
Feed System Adapter
or
No. of Teeth (Blade)
Blade Thickness (mm)
or
Trimmer line Diameter
(mm)
CG23EC (SLB)
CG23EC (SL)
ALUMINUM HEADS
NYLON HEAD
CH-100
(W/NYLON LINE)
4” Pre-Cut Line 2.2 – 3.0
NYLON HEAD
CH-100
TAP & GO NYLON
HEADS
NYLON HEAD
BF-4
4” R M8 x 1.25 Nut 2.2 – 3.0
NYLON HEAD
BF-5
5”
L M10 x 1.25 Nut
L M8 x 1.25 Nut
2.2 – 3.0
BLADES
BLADE
B4/9/1.6
9” 4 1.6
BLADE
B4/10/1.6
10” 4 1.6
English
16
TROUBLESHOOTING
Use the inspections in the table below if the tool does not operate normally. If this does not remedy the problem, consult your
dealer or the Hitachi Authorized Service Center.
Condition Cause Remedy
Engine does not
start
Fuel
system
Fuel tank is empty or fuel level is low
Fill the fuel tank with the correct fuel mix
(25:1-50:1)
Fuel tank contains old fuel (o ensive odor)
Replace with new fuel
Too much fuel is absorbed and spark
plug is wet
1.
Disconnect the spark plug and allow to dry
2. Pull the starter handle 5 or 6 times to
remove the surplus fuel
3. Attach the spark plug
4. Set the choke lever to RUN position and
pull the starter handle
Fuel lter is clogged with dirt Clean the fuel lter
Fuel pipe is bent or disconnected Ensure that the fuel ows smoothly
Carburetor malfunction Contact Hitachi Authorized Service Centers
Electrical
system
Stop switch lead has short-circuited Contact Hitachi Authorized Service Centers
Spark plug is dirty Replace or clean the spark plug
Electrode gap is too big Adjust the gap to 0.6mm
Poor connection between high tension
cable and spark plug
Reconnect
Electrical system malfunction Contact Hitachi Authorized Service Centers
Other
Mu er exhaust port is clogged with
carbon
Contact Hitachi Authorized Service Centers
for repair
Engine starts
but cuts out
straightaway
Engine is apt to
cut out
Fuel
system
Fuel tank is empty or fuel level is low
Fill the fuel tank with the correct fuel mix
(25:1-50:1)
Fuel tank contains old fuel (o ensive odor)
Replace with new fuel
Two-cycle oil has not been added Contact Hitachi Authorized Service Centers
Choke lever is in START position Set the choke lever to RUN position
Air has got into fuel system Reconnect the fuel pipe or joint
Carburetor malfunction Contact Hitachi Authorized Service Centers
Electrical
system
Ignition failure
Spark plug failure Replace with new spark plug
Electrical system failure Contact Hitachi Authorized Service Centers
Other
Engine overheating
Wrong spark plug model
Replace with designated part
See “SPECIFICATIONS”
Dirty air cleaner Clean
Carbon clogging (mu er exhaust port) Clean
Insu cient compression (piston, piston
ring, cylinder)
Contact Hitachi Authorized Service Centers
Abnormal vibration
Cutting attachment is not properly
installed
See “Installation of cutting attachment”
Handle, handle bracket or other
fastening part is loose
Check and tighten
Blade is bent or damaged Replace with new blade
Grass is wrapped round gear case/
cutter case
Remove grass
Engine is running but blade
does not move
Movement is poor
Grass is wrapped round gear case/
cutter case
Remove grass and dirt
English
17
Condition Cause Remedy
Engine does not stop Stop switch failure
Set the choke lever to START position to
stop the engine
Cease use immediately and contact Hitachi
Authorized Service Centers
Engine stops when throttle is
closed
Idle speed is too low
Contact Hitachi Authorized Service Centers
Blade continues rotating when
throttle is closed
Idle speed is too high
Throttle wire is too taut
Contact Hitachi Authorized Service Centers
18
min
-1
Idle
START
P
STOP
19
L
WA, Ra(G)
2000/14/EC
a
hv, eq(F)
L
pA, eq
ISO22868
a
hv, eq(R)
L
WA, Ra(M)
2000/14/EC
K
20
  • Page 1 1
  • Page 2 2
  • Page 3 3
  • Page 4 4
  • Page 5 5
  • Page 6 6
  • Page 7 7
  • Page 8 8
  • Page 9 9
  • Page 10 10
  • Page 11 11
  • Page 12 12
  • Page 13 13
  • Page 14 14
  • Page 15 15
  • Page 16 16
  • Page 17 17
  • Page 18 18
  • Page 19 19
  • Page 20 20
  • Page 21 21
  • Page 22 22
  • Page 23 23
  • Page 24 24
  • Page 25 25
  • Page 26 26
  • Page 27 27
  • Page 28 28
  • Page 29 29
  • Page 30 30
  • Page 31 31
  • Page 32 32
  • Page 33 33
  • Page 34 34
  • Page 35 35
  • Page 36 36
  • Page 37 37
  • Page 38 38
  • Page 39 39
  • Page 40 40
  • Page 41 41
  • Page 42 42
  • Page 43 43
  • Page 44 44
  • Page 45 45
  • Page 46 46
  • Page 47 47
  • Page 48 48
  • Page 49 49
  • Page 50 50
  • Page 51 51
  • Page 52 52
  • Page 53 53
  • Page 54 54
  • Page 55 55
  • Page 56 56
  • Page 57 57
  • Page 58 58
  • Page 59 59
  • Page 60 60
  • Page 61 61
  • Page 62 62
  • Page 63 63
  • Page 64 64
  • Page 65 65
  • Page 66 66
  • Page 67 67
  • Page 68 68
  • Page 69 69
  • Page 70 70
  • Page 71 71
  • Page 72 72
  • Page 73 73
  • Page 74 74
  • Page 75 75
  • Page 76 76

Hitachi CG 23EC (LB) Handling Instructions Manual

カテゴリー
草刈り機
タイプ
Handling Instructions Manual
このマニュアルも適しています