Zenoah G2500, G2500 OPS User Manual
G2500 / G2500 OPS
848C1B93A1 (704)
OWNER’S MANUAL
G
G
B
B
CHAIN SAWS
G2500
G2500
(One-Push-Start)
OPS
GB-1
G2500 / G2500 OPS
EXPLANATION OF SYMBOLS AND SAFETY WARNINGS
Read operator's instruction
book before operating this
machine.
Use the chain saw
with two hands.
Read, understand and
follow all warnings.
Never touch hot surface.
G2500
WARNING!!!
RISK OF DAMAGING HEARING
Wear head, eye and ear protection.
Wear head, eye and ear
protection.
Warning! Danger of
kickback.
Use appropriate protections
for foot-leg and hand-arm.
This saw is for trained tree
service operators only.
GB-2
G2500 OPS
WARNING!!!
RISK OF DAMAGING HEARING
Wear head, eye and ear protection.
MODEL
EN 608-ISO 7182
G2500 25.4 cm
G2500 OPS 25.4 cm
3
3
APPROVAL NUMBER OF CE EXHAUST EMISSION REGULATION (2002/88/EC)
SOUND LEVEL
LpA
2000/14/EC
LwA
guaranteed
VIBRATION LEVEL
EN608-ISO 7505
Front handle
97.4 dB(A) 110 dB(A) 4.3 m/s
96.5 dB(A) 112 dB(A) 6.2 m/s
e13*97/68SH2G3*2002/88*0085*03
2
2
Rear handle
2
7.0 m/s
2
5.1 m/s
DECLARATION OF CONFORMITY TO MACHINES DIRECTIVE
MANUFACTURER :ZENOAH CO.,LTD
DECLARES THAT THE DESIGN OF THE MACHINE DESCRIBED BELOW :
Model : G2500
Serial no. : 110001 and up
Make : ZENOAH
CONFORMS TO THE REQUIRMENTS OF THE MODIFIED MACHINES
DIRECTIVE (Directive 98/37/EC) AND TO THE NATIONAL REGULATIONS
GOVERNING ITS TRANSPOSITION ABROAD : AND
THAT IT HAS BEEN ISSUED WITH A “CE” CERTIFICATE,
NO. M. 0303. 02. 2737
BY THE ISTITUTO CERTIFICAZIONE EUROPEA PALAZZO DEL VESCOVO - V.
GARIBALDI, 20 40011 ANZOLA DELL’ EMILIA - ITALY
Signed in Saitama, Japan
(Directive 98/37/EC, 89/336/EEC)
and to the regulations governing transposition
Internal control production
No. 9, 1-Chome
MINAMIDAI, KAWAGOE City
SAITAMA, JAPAN
1st April 2007
G2500 / G2500 OPS
DECLARATION OF CONFORMITY TO MACHINES DIRECTIVE
MANUFACTURER :ZENOAH CO.,LTD
DECLARES THAT THE DESIGN OF THE MACHINE DESCRIBED BELOW :
Model : G2500 OPS
Serial no. : 510001 and up
Make : ZENOAH
CONFORMS TO THE REQUIRMENTS OF THE MODIFIED MACHINES
DIRECTIVE (Directive 98/37/EC) AND TO THE NATIONAL REGULATIONS
GOVERNING ITS TRANSPOSITION ABROAD : AND
THAT IT HAS BEEN ISSUED WITH A “CE” CERTIFICATE, NO. U3 2592658 01
BY TÜV Rheinland Group - TÜV Rheinland InterCert kft. Product Certification H-1061 Budapest Paulay Ede u. 52 - HUNGARY
Signed in Saitama, Japan
(Directive 98/37/EC, 89/336/EEC)
and to the regulations governing transposition
Internal control production
No. 9, 1-Chome
MINAMIDAI, KAWAGOE City
SAITAMA, JAPAN
1st April 2007
G
B
Masahiko GOUDA
General Manager, Quality Assurance Department
Contents
1. For Safe Operation ................................................................... 4
2. Explanation of Symbols on the Machine .................................. 8
3. Installing Guide Bar and Saw Chain......................................... 9
4. Fuel and Chain Oil .................................................................. 10
5. Operating the Engine ............................................................. 11
6. Sawing .................................................................................... 13
7. Maintenance ........................................................................... 15
8. Maintenance of Saw Chain and Guide Bar ............................ 16
9. Troubleshooting Guide ........................................................... 17
10.
Disposal .............................................................................................. 17
11. Specifications ......................................................................... 18
12. Limited Warranty..................................................................... 19
Masahiko GOUDA
General Manager, Quality Assurance Department
GB-3
G2500 / G2500 OPS
1. For safe operation
WARNING
This chainsaw has been especially designed for
tree maintenance and should therefore only be
used by trained operators when working on trees.
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.
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.
9. Never start cutting until you have
a clear work area, secure footing, and a planned retreat path
from the falling tree.
GB-4
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.
13. This product is provided with a
centrifugal clutch. Accordingly,
the saw chain starts to rotate the
moment the choke knob is set to
the “START” position (first step)
to start the engine. At the start,
put the machine body on the flat
ground and pull the starter rope
while holding the machine body
securely so that the saw chain
cannot touch the ground and surrounding obstacles.
14. Don’t pull the starter rope while
pulling the throttle lever (“Start
while pulling”) in the status where
the chain saw is hung with one
hand.
Doing this operation is strictly
prohibited.
15. If the saw chain continues to rotate, stop the engine, and then
readjust the idle adjustment
screw after confirming that there
is no hitch on the throttle lever
motion.
16. 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.
17. 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.
G2500 / G2500 OPS
(1)
(1) muffler guard
(2) guide bar
(3) saw chain
18. 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
which could subsequently cause
the flywheel to disintegrate.)
19.Always shut off the engine before setting it down.
20. 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.
21. 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.
22. 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.
23. Keep the handles dry, clean and
free of oil or fuel mixture.
24. 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.
25. Do not operate the chain saw in
a tree unless specially trained to
do so.
26. 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.
27. When transporting your chain
saw, make sure the appropriate
guide bar scabbard is in place.
28. Never touch the muffler guard,
(3)
guide bar or saw chain with bare
hands while the engine is in op-
(2)
eration or immediately after shutting down the engine. Doing so
could result in serious burns because of high temperature.
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
saw chain in the cut. Tip contact
in some cases may cause a lightning fast reverse reaction,kicking
the guide bar up and back to
wards 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.
(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
G
B
G2500 / G2500 OPS
WORKING WITH TREE SERVICE CHAIN-SAWS
FROM A ROPE AND HARNESS
This chapter sets out working practices to reduce the
risk of injury from tree service chainsaws when working
at height from a rope and harness. While it may form
the basis of guidance and training literature, it should
not be regarded as a substitute for formal training.
General requirements working at height
Operators of tree service chainsaws working at height
from a rope and harness should never work alone. A
competent ground worker trained in appropriate emergency procedures should assist them.
Operators of tree service chainsaws for this work should
be trained in general safe climbing and work positioning techniques and shall properly equipped with harnesses, ropes, strops, karabiners and other equipment
for maintaining secure and safe working positions for
both themselves and the saw.
Preparing to use the saw in the tree
The chainsaw should checked, fuelled, started and
warmed up by the ground worker before it is sent up to
the operator in the tree. The chainsaw should be fitted
with a suitable strop for attaching to the operator’s harness:
a) choke the strop around the attachment point on the
rear of the saw (A);
The saw should only be attached to the recommended
attachment points on the harness. These may be at
mid-point (front or rear) or at the sides. Where possible
attaching the saw to centre rear mid-point will keep it
clear of climbing lines and support its weight centrally
down the operator’s spine.
When moving the saw from any attachment point to another, operators should ensure it is secured in the new
position before releasing it from the previous attachment
point.
Using the chainsaw in the tree
An analysis of accidents with these saws during tree
service operations shows the primary cause as being
inappropriate one-handed use of the saw. In the vast
majority of accidents, operators fail to adopt a secure
work position witch allows them to hold both handles of
the saw. This results in an increased risk of injury due
to:
• not having a firm grip on the saw if it kicks back;
•a lack of control of the saw such that it is more liable
to contact climbing lines and operators body (particularly the left hand and arm)
• losing control from insecure work position resulting
in contact with the saw (unexpected movement during operation of the saw)
Securing the work position for two-handed use
To allow the operator to hold the saw with both hands,
they should as general rule, aim for secure work position where they are operating the saw at:
• hip level when cutting horizontal sections;
• solar plexus level when cutting vertical sections.
b) provide suitable karabiners to allow indirect (i.e. via
the strop) and direct attachment (i.e. at the attachment point on the saw) of saw to the operators harness;
c) ensure the saw is securely attached when it is being
sent up to the operator;
d) ensure the saw it secured to the harness before it is
disconnected from the means of ascent.
GB-6
Where the operator is working close into vertical stems
with a low lateral forces on their work position, then a
good footing may be all that is needed to maintain a
secure work position. However as operators move away
from the stem, they will need to take steps to remove or
counteract the increasing lateral forces by, for example,
a re-direct of the main line via a supplementary anchor
point or using an adjustable strop direct from the harness to a supplementary anchor point.
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