Zenoah GZ400 User Manual
X372340053(801)
OWNER’S MANUAL
GZ400
G
G
B
B
CHAIN SAW
GZ400
GB-1
GZ400
Important!
It is essential that read the instructions in this manual before mounting
and operating this machine.
EXPLANATION OF SYMBOLS AND SAFETY WARNINGS
Read, understand and
follow all warnings.
Wear head, eye and ear
protection.
Warning! Danger of
kickback.
Avoid bar nose contact.
WARNING!!!
RISK OF DAMAGING HEARING
Wear head, eye and ear protection.
Read operator's instruction
book before operating this
machine.
Wear non-slip, heavy-duty
protective gloves when handling
the chain saw.
Do not operate the saw
using only one hand.
Hold and operate the saw
properly with both hands.
GB-2
MODEL SOUND LEVEL VIBRATION LEVEL
2000/14/EC
L
wA
Rear handle
2
7.0 m/s
GZ400
ISO 22868 ISO 22867
L
pA Front handle
L
wA
103 dB(A) 112 dB(A) 113 dB(A) 6.4 m/s
2
DECLARATION OF CONFORMITY TO MACHINES DIRECTIVE
(Directive 98/37/EC, 2002/83/EC, 89/336/EEC) ,2000/14/EC
and to the regulations governing transposition
Internal contorol production
MANUFACTURER :
DECLARES THAT THE DESIGN OF THE MACHINE DESCRIBED BELOW:
Model : GZ400
Serial no. : 0801000001 and up
Make :
CONFORMS TO REQUIREMENTS OF THE MODIFIED MACHINES DIRECTIVE
(Directive 98/37/EC), EN ISO 11681-1:2004; EN ISO 22868:2005; EN ISO
22867:2004; EN 55012:2002; EN ISO 14982:1998 AND TO THE NATIONAL
REGULATIONS GOVERNING ITS TRANSPOSITION ABROAD: AND
THAT IT HAS BEEN ISSUED WITH A, CE CERTIFICATE, BY INTERTEK
DENTSCHLAND GmbH.
The engineering type licence no. (issued by Intertek Deutschland GmbH is
07SHW0982-01.
Measured sound power level:112bB(A)
Guaranteed sound power level; 113bB(A)
Maintenance of technical documentation:
Signed in Saitama, Japan
Husqvarna Zenoah Co., Ltd.
No. 9, 1-Chome
MINAMIDAI, KAWAGOE City
SAITAMA, JAPAN
Husqvarna Zenoah Co., Ltd.
Jan. 1st 2008
GZ400
G
B
Masahiko GOUDA
General Manager, Quality Assurance Department
Contents
1. For Safe Operation ................................................................... 4
2. Explanation of Symbols on the Machine .................................. 6
3. Installing Guide Bar and Saw Chain ......................................... 7
4. Fuel and Chain Oil .................................................................... 8
5. Operating the Engine ............................................................... 9
6. Sawing .................................................................................... 11
7. Maintenance ........................................................................... 12
8. Maintenance of Saw Chain and Guide Bar ............................ 13
9. Storage ................................................................................... 14
10. Troubleshooting Guide ........................................................... 14
11. Specifications ......................................................................... 15
GB-3
GZ400
1. For safe operation
1. Never operate a chain saw when
you are fatigued, ill, or upset, or
under the influence of medication that may make you drowsy,
or if you are under the influence
of alcohol or drugs.
2. Use safety footwear, snug fitting
clothing and eye, hearing and
head protection devices.
Use the vibration-proof glove.
3. Keep the saw chain sharp and
the saw, including the AV system,
well maintained. A dull chain will
increase cutting time, and pressing a dull chain through wood will
increase the vibrations transmitted to your hands. A saw with
loose components or with damaged or worn AV buffers will also
tend to have higher vibration levels.
4. All the above mentioned precautions do not guarantee that you
will not sustain whitefinger disease or carpal tunnel syndrome.
Therefore, continual and regular
users should monitor closely the
condition of their hands and fingers.
If any of the above symptoms appear, seek medical advice immediately.
9. Never start cutting until you have
a clear work area, secure footing, and a planned retreat path
from the falling tree.
10. Always hold the chain saw firmly
with both hands when the engine
is running. Use a firm grip with
thumb and fingers encircling the
chain saw handles.
11. Keep all parts of your body away
from the saw chain when the engine is running.
12. Before you start the engine,
make sure the saw chain is not
contacting anything.
GB-4
5. Always use caution when handling fuel. Wipe up all spills and
then move the chain saw at least
3 m from the fueling point before
starting the engine.
6. Eliminate all sources of sparks or
flame (i.e. smoking, open flames,
or work that can cause sparks)
in the areas where fuel is mixed,
poured, or stored.
7. Do not smoke while handling fuel
or while operating the chain saw.
8. Do not allow other persons to be
near the chain saw when starting or cutting. Keep bystanders
and animals out of the work area.
Children, pets and bystanders
should be a minimum of 10 m
away when you start or operate
the chain saw.
13. Always carry the chain saw with
the engine stopped, the guide
bar and saw chain to the rear,
and the muffler away from your
body.
14. Always inspect the chain saw before each use for worn, Ioose, or
damaged parts. Never operate
a chain saw that is damaged, improperly adjusted, or is not completely and securely assembled.
Be sure that the saw chain stops
moving when the throttle control
trigger is released.
15. All chain saw service, other than
the items listed in the Owner’s
Manual, should be performed by
competent chain saw service
personnel. (E.g., if improper tools
are used to remove the flywheel,
or if an improper tool is used to
hold the flywheel in order to remove the clutch, structural damage to the flywheel could occur
GZ400
which could subsequently cause
the flywheel to disintegrate.)
16. Always shut off the engine before setting it down.
17. Use extreme caution when cutting small size brush and saplings because slender material
may catch the saw chain and be
whipped toward you or pull you
off balance.
18. When cutting a limb that is under tension, be alert for springback so that you will not be
struck when the tension in the
wood fibers is released.
19. Never cut in high wind, bad
weather, when visibility is poor or
in very high or low temperatures.
Always check the tree for dead
branches which could fall during
the felling operation.
20. Keep the handles dry, clean and
free of oil or fuel mixture.
21.Operate the chain saw only in
well ventilated areas. Never start
or run the engine inside a closed
room or building. Exhaust fumes
contain dangerous carbon monoxide.
22. Do not operate the chain saw in
a tree unless specially trained to
do so.
23. Guard against kickback. Kickback is the upward motion of the
guide bar which occurs when the
saw chain at the nose of the
guide bar contacts an object.
Kickback can lead to dangerous
loss of control of the chain saw.
saw chain in the cut. Tip contact
in some cases may cause a lightning fast reverse reaction,kicking
the guide bar up and back towards the operator. Pinching the
saw chain along the top of the
guide bar may push the guide
bar rapidly back towards the operator. Either of these reactions
may cause you to Iose control of
the saw, which could result in
serious personal injury.
• Do not rely exclusively on the
safety devices built into your saw.
As a chain saw user you should
take several steps to keep cutting jobs free from accident or
injury.
(1) With a basic understanding of
kickback you can reduce or
eliminate the element of surprise.
Sudden surprise contributes to
accidents.
(2) Keep a good grip on the saw with
both hands, the right hand on the
rear handle, and the left hand on
the front handle, when the engine
is running. Use a firm grip with
thumbs and fingers encircling
the chain saw handles. A firm
grip will help you reduce kickback and maintain control of the
saw.
(3) Make certain that the area in
which you are cutting is free from
obstructions. Do not let the nose
of the guide bar contact a log,
branch, or any other obstruction
which could be hit while you are
operating the saw.
(4) Cut at high engine speeds.
G
B
24.When transporting your chain
saw, make sure the appropriate
guide bar scabbard is in place.
KICKBACK SAFETY PRECAUTIONS FOR CHAIN SAW USERS
WARNING
• Kickback may occur when the
nose or tip of the guide bar
touches an object, or when the
wood closes in and pinches the
(5) Do not overreach or cut above
shoulder height.
(6) Follow the manufacturer’s sharp-
ening and maintenance instructions for the saw chain.
(7) Only use replacement bars and
chains specified by the manufacturer or the equivalent.
GB-5
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