Ryobi CS-1840 Operation manual

CS-1840, CS-2040

- 1 -
1 2
CS-1840
CS-1840
1
1
2
4
7
2
7
8
5
9
10
11
11
12
12
6
3
3
CS-2040

- 2 -
3 4
CS-2040
1
1
2
2
4
4
3
13 6
14
9
15
11
11
12
12
8
73
5

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5 6
7 8
Chain oil
9 10
CS-1840 CS-2040
Break engaged

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11 12
135°
135°
45°
45°
90°
13 14
50mm or 1/10
50mm Felling back cut
Notch Felling back cut
Hinge
15 16
Break released

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1
2
17 18
19 20
2
3
1
1/3
12
3
4
21 22

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23 24
25 26
27
27
28

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THANK YOU FOR BUYING A RYOBI PRODUCT.
To ensure your safety and satisfaction, carefully read
through this OWNER’S MANUAL before using the
product.
GENERAL SAFETY RULES
WARNING! Read all instructions. Failure to follow all
instructions listed below may result in electric shock, fire and/
or serious injury. The term “power tool” in all of the warnings
listed below refers to your mains operated (corded) power
tool or battery-operated (cordless) power tool.
Work Area Safety
●Keep work area clean and well lit. Cluttered and dark
areas invite accidents.
●Do not operate power tools in explosive atmospheres,
such as in the presence of ammable liquids, gases or
dust. Power tools create sparks which may ignite the
dust or fumes.
●Keep children and bystanders away while operating a
power tool. Distractions can cause you to lose control.
Electrical Safety
●Power tool plugs must match the outlet. Never modify
the plug in any way. Do not use any adapter plugs with
earthed (grounded) power tools. Unmodified plugs and
matching outlets will reduce risk of electric shock.
●Avoid body contact with earthed or grounded surfaces
such as pipes, radiators, ranges and refrigerators. There
is an increased risk of electric shock if your body is
earthed or grounded.
●Do not expose power tools to rain or wet conditions.
Water entering a power tool will increase the risk of
electric shock.
●Do not abuse the cord. Never use the cord for carrying,
pulling or unplugging the power tool. Keep cord away
from heat, oil, sharp edges or moving parts. Damaged or
entangled cords increase the risk of electric shock.
●When operating a power tool outdoors, use an extension
cord suitable for outdoor use. Use of a cord suitable for
outdoor use reduces the risk of electric shock.
●If operating a power tools in a damp location is
unavoidable, use a residual current device (RCD)
protected supply. Use of an RCD reduces the risk of
electric shock.
Personal Safety
●Stay alert, watch what you are doing and use common
sense when operating a power tool. Do not use a power
tool while you are tired or under the inuence of drugs,
alcohol or medication. A moment of inattention while
operating power tools may result in serious personal
injury.
● Use safety equipment. Always wear eye protection.
Safety equipment such as dust mask, non-skid
safety shoes, hard hat, or hearing protection used for
appropriate conditions will reduce personal injuries.
●Avoid accidental starting. Ensure the switch is in the off
position before plugging in. Carrying power tools with
your finger on the switch or plugging in power tools that
have the switch on invites accidents.
●Remove any adjusting key or wrench before turning
the power tool on. A wrench or a key left attached to a
rotating part of the power tool may result in personal
injury.
●Do not overreach. Keep proper footing and balance at
all times. This enables better control of the power tool in
unexpected situations.
●Dress properly. Do not wear loose clothing or jewellery.
Keep your hair, clothing and gloves away from moving
parts. Loose clothes, jewellery or long hair can be caught
in moving parts.
●If devices are provided for the connection of dust
extraction and collection facilities, ensure these are
connected and properly used. Use of these devices can
reduce dust related hazards.
Power Tool Use and Care
●Do not force the power tool. Use the correct power tool
for your application. The correct power tool will do the job
better and safer at the rate for which it was designed.
●Do not (use the power tool if the switch does not turn it
on and off. Any power tool that cannot be controlled with
the switch is dangerous and must be repaired.
●Disconnect the plug from the power source before
making any adjustments, changing accessories, or
storing power tools. Such preventive safety measures
reduce the risk of starting the power tool accidentally.
●Store idle power tools out of the reach of children and do
not allow persons unfamiliar with the power tool or these
instructions to operate the power tool. Power tools are
dangerous in the hands of untrained users.
●Maintain power tools. Check for misalignment or binding
of moving parts, breakage of parts and any other
condition that may affect the power tools operation. If
damaged, have the power tool repaired before use.
Many accidents are caused by poorly maintained power
tools.
●Keep cutting tools sharp and clean. Properly maintained
cutting tools with sharp cutting edges are less likely to
bind and are easier to control.
●Use the power tool, accessories and tool bits etc., in
accordance with these instructions and in the manner
intended for the particular type of power tool, taking
into account the working conditions and the work to be
performed. Use of the power tool for operations different
from intended could result in a hazardous situation.
Service
● Have your power tool serviced by a qualified repair
person using only identical replacement parts. This will
ensure that the safety of the power tool is maintained.
SPECIFIC RULES FOR CHAIN SAWS
●CLEAR THE WORK AREA. Before starting cutting
operations, ensure that you have a clear work area,
secure footing and a carefully planned path of retreat
from the falling tree.
●STAY ALERT. Keep all parts of the body away from the
chain saw while the motor is running. Ensure that the
chain saw is not contacting anything before starting it.
●DAMAGED PARTS. Do not operate a chain saw that is
damaged, incorrectly adjusted, or that is not completely
and securely assembled. Check to ensure that the chain
saw stops moving when the trigger is released.
●CONSIDER THE WORK ENVIRONMENT. Be extremely
cautious when cutting small saplings and branches
because the slender material may catch on the saw
chain and can be whipped towards you or pull you off
balance. Do not operate a chain saw in a tree unless you
have received specific training in how to do so. When
cutting a limb that is under tension, watch out for spring

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back so that you will not be struck when the tension
in the wood fibers is released. DO NOT stand on the
section of the tree limb which is being cut off.
●MAINTAIN THE CHAIN SAW WITH CARE. Keep the
cord clear of the chain at all times. Never carry the saw
by the cord or pull on the cord to disconnect it from the
socket. Keep the handles dry, clean and free from oil.
When storing the saw, use a scabbard or carrying case.
●PROTECT YOURSELF. Always wear goggles and
protective gloves when working with the chain saw or
while loading or adjusting the saw blade. To prevent
damage to your hearing, wear ear protectors; helmets
with a visor are particularly advantageous. Tight fitting
clothing and safety boots should also be worn to prevent
injury.Wear a dust mask if operation is dusty.
●CHAIN TENSION. Make sure that the chain tension
is correct, as specified in these instructions. Incorrect
tension may cause the chain to disengage from the
guide bar, which is extremely dangerous.
●THE CHAIN SAW MUST NOT BE OPERATED BY
ANYONE YOUNGER THAN 18 YAERS OF AGE. Always
pass on the operating instructions together with the chain
saw when lending it to someone else.
●CARRYING THE SAW. Before picking up the saw,
ensure that it has come to a complete stop and that your
finger is off the switch. Carry the saw by the front handle,
with the guide bar and the saw chain to the rear.
●GRIP SAW FIRMLY. Hold the saw securely with both
hands while the motor is running. Use a firm grip with
your thumbs and fingers encircling the chain saw
handles.
●THE SAW MUST NOT BE TOUCHING ANYTHING
WHEN IT STARTS UP.
●BEFORE MAKING A CUT, ALWAYS PLACE THE CLAW
STOP NEXT TO THE WOOD BEING CUT.
●ALWAYS HAVE FIRM FOOTING. NEVER use the chain
saw when standing on a ladder, in a tree or in any other
unstable places. DO NOT saw with one hand.
●USE A STRONG SUPPORT WHEN SAWING
CONVERTED TIMBER AND THIN BRANCHES. DO
NOT stack the timber and do not have it held by a
second person or with your foot.
●LOGS MUST BE SECURED IN POSITION.
●ON SLOPING GROUND, ALWAYS WORK FACING
UPWARDS.
●PULL THE SAW OUT OF WOOD ONLY WHEN THE
CHAIN SAW IS RUNNING.
●IF YOU ARE CARRYING OUT SEVERAL CUTS,
SWITCH OFF THE CHAINSAW IN-BETWEEN.
●SWITCH THE CHAIN SAW OFF BEFORE RELEASING
THE CHAIN BRAKE.
●PLUNGE CUTS AND HORIZONTAL CUTS MAY ONLY
BE CARRIED OUT BY PROFESSIONALS. There is a
high risk of kickback.
●HOW TO PREVENT KICKBACK. Kickback is the recoil
motion of the guide bar that occurs when the saw chain
at the tip (especially the top quarter) of the guide bar
contacts wood or any other solid object. In this case,
the saw will be uncontrolled and will be hurled towards
the operator at full power. Kickback can lead to loss of
control of the chain saw which is extremely dangerous.
●To avoid kickback:
a) Hold the chain saw firmly with both hands.
b) Do not over reach.
c) Do not let the nose of the guide bar contact a log,
branch, the ground, or any other obstruction.
d) Do not cut above shoulder level.
e) Make sure the chain is always properly sharpened.
Follow the details regarding sharpening and
maintenance contained in these instructions for a
better and safer performance. Follow the instructions
for lubricating and changing the guide bar.
f) Use devices such as a low kickback chain and chain
brake.
g) Never start cutting or cut with the tip of the guide
bar. Be careful when continuing cuts you are already
working on.
h) Always start cuts with the chain saw already running.
i) Never cut through more than one branch at a time.
When lopping off branches, be careful not to touch
any other branches.
j) When cross-cutting, pay attention to trunks standing
very close to each other. If possible use a saw-horse.
●IF THE CHAIN GETS STUCK WHEN SAWING WITH
THE UPPER SIDE OF THE GUIDE BAR IT MAY BE
THRUST TOWARDS THE OPERATOR. For this reason
you should saw wherever possible with the bottom side
of the guide bar, as the chain saw will then be thrust
away from the body towards the wood.
●PAY EXTRA ATTENTION WHEN CUTTING
SPLINTERED WOOD. Sawed off pieces of wood may be
catapulted in any direction causing a high risk of injury.
●WHEN LOPPING OFF BRANCHES, THE CHAIN SAW
SHOULD BE SUPPORTED WHEREVER POSSIBLE
AGAINST THE TRUNK. Branch lopping should be
carried out by trained personnel as there is a high risk
of injury.
●NEVER STAND ON THE TRUNK WHEN LOPPING OFF
BRANCHES.
●PAY SPECIAL ATTENTION TO BRANCHES UNDER
TENSION. DO NOT cut through freely suspended
branches from underneath.
●THIS CHAIN SAW SHOULD NOT BE USED FOR
FOREST WORK, ie. for felling and lopping off branches
in a forest. Because of the cable connection the saw
operator does not have the necessary mobility and his
safety is not guaranteed.
●ALWAYS STAND TO THE SIDE OF THE TREE BEING
FELLED.
●WHEN THE TREE IS BEING FELLED, WATCH OUT
FOR FALLING BRANCHES WHEN YOU STEP BACK.
●WATCH OUT FOR TRUNKS ROLLING TOWARDS
YOU.
DESCRIPTION
1. Front guard
2. Front handle
3. Rear handle
4. Chain oil tank cap
5. Sightglass for oil level
6. Cable hook
7. Trigger switch
8. Safety switch
9. Sprocket cover
10.Guide bar fixing knob
11.Guide bar
12.Saw chain
13.Extension cable strain relief gap
14.Chain tension adjust knob
15.Chain tension locking knob

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SPECIFICATIONS
Model
Voltage
Power input
Cutting length
Chain speed
Oil tank capacity
Net weight
INTENDED USE
This chainsaw is designed for cutting branches, trunks,
logs and beams of a diameter determined by the cutting
length of the guide bar. It is only designed to cut wood. It is
only to be used outdoors, by adults.
Do not use the chain saw for any purpose not listed above.
This chain saw is not to be used for professional tree
services. It is not to be used by children or by persons
not wearing adequate personal protective equipment and
clothing.
RESIDUAL RISKS
Even when using the chain saw as intended, there remains
a residual risk of harm which cannot be fully prevented.
The following list of potential hazards should be read and
understood. You should pay extra attention and care to
these items to reduce the risk of occurrence or injury.
• Contact with exposed cutting teeth and saw chain.
• Access to rotating parts (the saw chain)
• Unexpected, abrupt movement (kick back) of the guide
bar.
• Flying chain parts (thrown off or broken)
• Flying material (cut from the work piece)
• Inhalation of saw dust
• Loss of hearing if no hearing protective equipment worn
during use.
PREPARATION
WARNING! If any parts are damaged or missing do not
operate this product until the parts are replaced. Failure to
heed this warning could result in serious personal injury.
WARNING! Do not attempt to modify this product or create
accessories not recommended for use with this product.
Any such alteration or modification is misuse and could
result in a hazardous condition leading to possible serious
personal injury.
ASSEMBLY
Mounting the guide bar and saw chain
The guide bar and chain are supplied separately.
WARNING! Ensure the saw is unplugged from the power
supply before starting assembly operations.
• CS-1840: Unscrew the guide bar fixing knob and
remove the sprocket cover. (Fig. 1)
• CS-2040: Unscrew the chain tension locking knob and
remove the sprocket cover. (Fig. 2)
• Gear the saw chain to the sprocket while fitting the saw
chain around the guide bar, mount the guide bar to the
unit. (Fig.3)
Note: Pay attention to the correct direction of the saw
chain. The running direction is marked on the chain bar.
(Fig.4)
• CS-1840: Re-place the sprocket cover and tighten
gently with the guide bar fixing knob.
CS-1840
230V ~ 50Hz
1,800W
400mm
15m/sec
90ml
4.5kg
CS-2040
230V ~ 50Hz
2,000W
400mm
15m/sec
250ml
5.6kg
• CS-2040: Re-place the sprocket cover and tighten
gently with chain tension locking knob.
Tightening The Saw Chain
CS-1840:
1. While holding up the tip of the bar, adjust the chain
tension by turning the chain tension adjust screw. Turn
clockwise to tension the chain, or turn counterclockwise
to loosen. (Fig. 5)
2. Tighten the guide bar fixing knob securely with the
bar tip held up. Then check the chain for smooth
rotation and proper tension while moving it by hand. If
necessary, readjust with the sprocket cover loose.
CS-2040:
1. While holding up the tip of the bar, adjust the chain
tension by turning the chain tension adjust knob. Turn
clockwise to tension the chain, or turn counterclockwise
to loosen. (Fig. 6)
2. Tighten the chain tension locking knob securely with
the bar tip held up. Then check the chain for smooth
rotation and proper tension while moving it by hand. If
necessary, readjust with the sprocket cover loose.
Tips: A new chain will expand in length in the beginning of
use. Check and readjust the tension frequently as a loose
chain can easily derail or cause rapid wear of chain itself
and the guide bar.
OPERATION
Switching ON and OFF
1. Connect the tool to a mains power supply.
2. Depress the safety switch while squeezing the trigger
switch. (Fig.7)
3. Once the chain saw is running, the safety switch can be
released but the trigger switch must be held in.
4. If the chain saw does not run, the chain brake must
be released via the front guard (read the sections
“RELEASING THE CHAIN BRAKE”).
5. Release the trigger switch to stop the tool.
Chain Lubrication
To prevent excessive wear, the saw chain and guide bar
must be evenly lubricated during operation. This unit
is equipped with an in-built auto lubrication system which
automatically supplies oil to the saw chain and guide
bar. NEVER work without chain lubrication.
WARNING! If the chain runs dry, the entire cutting
apparatus will quickly become severely damaged. It is
therefore important to check both chain lubrication and the
oil gauge before every use.
1. Before commencing work, check the oil gauge to
ensure there is sufficient oil. (Fig.8)
2. Never use the saw when the oil level is below the “Min”
mark.
Chain Lubrication Test (Fig.9)
1. Hold the chain saw above the ground. Be careful not
to allow the chain saw to touch the ground. For safety
reasons it is best to keep a clearance of at least 20cm.
2. Switch on the chain saw. If you now see growing traces
of oil, the chain lubrication system is working correctly.
3. If there are no traces of oil at all, try cleaning the oil
outlet, the upper chain tensioning borehole and the oil
duct, or contact your customer service centre.

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Chain Brake (Fig.10)
In the event of kick-back, the chain brake will be actuated
via the front finger guard. The front finger guard is pushed
forwards by the back of the hand and this causes the chain
brake to stop the chain saw, or rather the motor, within
0.15 seconds.
Releasing The Chain Brake (Fig.11)
To be able to use your chain saw again, you must release
the saw chain. First switch off the chain saw. Then push
the front finger guard back into the vertical position until
it locks in place. The chain brake is now fully functional
again.
Proper Grip On Handles (Fig.12)
Always grip both handles with the thumbs and fingers
encircling the handles. Ensure that your left hand is holding
the handle so that the thumb is underneath.
WARNING! Always start a cut next to the claw stop at the
base of the guide bar.
Using The Chain Saw (Fig.13)
1. Switch on the chain saw. Place the lowest claw on the
wood.
2. Lower the chain saw by raising the rear grip and saw
into the wood.
3. Move the chain saw back a little and place the claw
further down.
4. Be careful when sawing splintered wood as pieces of
wood may be ripped off.
Tips On Chain Saw Use
To saw up wood, please observe the safety regulations
and proceed as follows:
• The chain saw must be running before it comes into
contact with the wood.
• Make sure the wood to be sawed cannot slip. Clamp
short pieces of wood in place before sawing.
• Saw only wood or wooden objects.
• When sawing, make sure that no stones or nails are
touched as these could be thrown out and damage the
chain saw or cause serious injury.
• Avoid touching the running saw on wire fences or the
ground.
• When lopping off branches, support the chain saw as far
as possible and do not saw with the tip of the guide bar.
• Ensure you have a firm footing at all times. Watch out
for obstacles such as tree stumps; roots; ditches; and
hillocks as these could cause you to fall.
• You can avoid accidents by not sawing with the tip of the
guide bar as this may cause the saw to rear up suddenly.
This is known as kickback. Kickback is an upward and/
or backward movement of the guide bar which can occur
if the saw chain at the tip of the guide bar encounters
an obstruction. Kickback causes the saw to behave
uncontrollably. A poorly sharpened or loosely tensioned
chain increases the risk of kickback.
• Make sure your workpiece is firmly secured to stop the
workpiece slipping. Wherever possible, clamp the wood
in place before sawing. This makes it easier to operate
the chainsaw with both hands.
Top side of wood under tension: Wood will spring up
Bottom side of wood under tension: Wood will spring
downwards
Thick trunks and high tension: Tree will move suddenly
with immense force.
Both sides of trunk under tension: Tree will move
sideways.
Felling Trees (Fig. 14)
WARNING! Felling trees is dangerous and requires
practice. If you are a beginner or inexperienced, do not try
to teach yourself but seek professional training.
• Falling trees can bring down other trees with them. The
DANGER ZONE is therefore twice the height of the tree
being felled. Therefore when logging felled trees and
felling operations are being performed simultaneously
by two or more operators, the felling operation should be
separated from the logging operation by a distance of at
least twice the height of the tree being felled.
• Trees should not be felled in a manner that would
endanger any person, strike any utility line or cause any
property damage. If the tree does make contact with
any utility line, the utility company should be notified
immediately.
• The chain saw operator should keep on the uphill side
of the terrain as the tree is likely to roll or side downhill
after it is felled.
• If the saw chain gets jammed, release it using a wooded
wedge.
WARNING! The chain saw may only be used to fell trees
which are smaller in diameter than the length of the guide
bar.
• Before felling is started consider the natural lean of
the tree, the location of larger branches and the wind
direction to judge which way the tree will fall.
• Remove dirt, stones, loose bark, nails, staples and wire
from the tree before felling cuts are to be made.
• A retreat path should be planned and cleared as
necessary before cuts are started. The retreat path
should extend back and diagonally to rear of the
expected line of fall as illustrated.
Notching Undercut (Fig. 15)
A notching undercut is a notch cut in a tree to direct the fall
of the tree.
First estimate the direction of fall, taking into account the
center of gravity of the crown and the wind direction. Saw
an under cut in the tree in the direction of fall. Make the
notch 1/3 the diameter of the tree, perpendicular to the
direction of fall.
Make the lower horizontal notching cut first, this will help
to avoid pinching of either the saw chain or the guide bar
when the second cut is being made.
Felling Back Cut (Fig. 16)
A felling back cut is the final cut in a tree felling operation,
made on the opposite side of the tree from the notching
undercut.
Make the felling back cut at least 50mm higher than the
Wood Under Tension
One must be very careful when sawing wood/trees which
are under tension as there are much dangerous involved.

- 11 -
horizontal notching cut.
1. Pick your escape route (or routes in case the intended
route is blocked). Clear the immediate area around the
tree and make sure there are no obstructions in your
planned path of retreat. Clear the path of safe retreat
approximately 135 ° from the planned line of fall.
2. Consider the force and direction of the wind, the lean
and balance of the tree, and the location of large limbs.
These things inuence the direction in which the tree
will fall. Do not try to fell a tree along a line different
from its natural line of fall.
3. Cut a notch about 1/3 the diameter of the trunk in the
side of the tree. Make the notch cuts so they intersect
at a right angle to the line of fall. This notch should be
cleaned out to leave a straight line. To keep the weight
of the wood off the saw, always make the lower cut of
the notch before the upper cut.
4. Make the back cut level and horizontal, and at a
minimum of 50mm above the horizontal cut of the
notch.
Note: Never cut through to the notch. Always leave a band
of wood between the notch and back cut (approximately
50mm or 1/10 the diameter of the tree). This is called a
“hinge” or “hinge wood.” It controls the fall of the tree and
prevents slipping or twisting or shooting back of the tree
off the stump.
5. On large diameter trees, stop the back cut before it is
deep enough for the tree to either fall or settle back on
the stump. Then insert soft wooden or plastic wedges
into the cut so they do not touch the chain. Drive
wedges in, little by little, to help jack the tree over.
6. As the tree starts to fall, stop the chain saw and put it
down immediately. Retreat along the cleared path, but
watch the action in case something falls your way.
WARNING! Never cut through to the notch when making a
back cut. The hinge controls the fall of the tree, this is the
section of wood between the notch and back cut.
Warning! Do Not Fell Trees
• If you can no longer distinguish details within the danger
zone, e.g., owing to fog, rain or twilight.
• If the direction of fall cannot be estimated owing to wind
or gusts of wind.
• If you are unable to get a firm foothold while working on
slooping ground, black ice, frozen or dewy ground.
Removing Buttress Roots (Fig. 17)
A buttress root is a large root extending from the trunk of
the tree above the ground. Remove large buttress roots
prior to felling. Make the horizontal cut into the buttress
first, followed by the vertical cut. Remove the resulting
loose section from the work area. Follow the correct tree
felling procedure as stated in FELLING TREES after you
have removed the large buttress roots.
Bucking (Fig. 18)
Bucking is the term used for cutting a fallen tree to the
desired
log length.
• Cut only one log at a time.
• Support small logs on a saw horse or another log while
bucking.
• Keep a clear cutting area. Make sure that no objects can
contact the guide bar nose and chain during cutting, this
can cause Kickback. Refer to Kickback in the Specific
Safety Rules section of this manual for more information.
• During bucking operations, stand on the uphill side so
that the cut-off section of the log cannot roll over you.
• Sometimes it is impossible to avoid pinching (with just
standard cutting techniques) or difficult to predict which
way a log will settle when cut.
Note: If the wood diameter is large enough for you to
insert a soft bucking wedge without touching the chain,
you should use the wedge to hold the cut open to prevent
pinching.
Overbucking (Fig. 19)
Begin from the top side of the log with the bottom of the
saw against the log; exert light pressure downward. Note
that the saw will tend to pull away from you.
Underbucking (Fig. 20)
Begin from the underside of the log with the top of the saw
against the log; exert light pressure upward. During
underbucking, the saw will tend to push back at you.
Be prepared for this reaction and hold the saw firmly to
maintain control.
Branch Trimmind And Pruning (Fig. 21, 22)
• Work slowly, keeping both hands on the saw with a firm
grip. Maintain secure footing and balance.
• Keep the tree between you and the chain while limbing.
• Do not cut from a ladder. This is extremely dangerous.
Leave this operation for professionals.
• Do not cut above chest height. A saw held higher than
chest height is difficult to control against kickback.
WARNING! Never climb into a tree to limb or prune. Do not
stand on ladders, platforms, a log, or in any position which
can cause you to lose your balance or control of the saw.
• When pruning trees it is important not to make the ush
cut next to the main limb or trunk until you have cut off
the limb further out to reduce the weight. This prevents
stripping the bark from the main member.
• Underbuck the branch 1/3 through for your first cut.
• Overbuck the branch to drop it.
• Finish by cutting smoothly and neatly against the main
member so the bark will grow back to seal the wound.
WARNING! If the limbs to be pruned are above chest
height, hire a professional to perform the pruning.
MAINTENANCE
• Do not make any adjustments while the motor is in
motion.
• Always disconnect the electrical cord from the power
source before carrying out any assembly, adjustment or
maintenance work.
• Only the maintenance work described in these operating
instructions may be carried out. Any other maintenance
work must be carried out by an authorised service
centre.
• Do not modify the chain saw as this could jeopardize
your safety and will make the warranty null and void.
• Check the chain saw for damage. Any damaged
safety devices and parts must be repaired or replaced
immediately.
• After use, check your tool to keep it in top condition.
• Keep the cooling vents on the motor housing clean and
unobstructed at all times. Clean out accumulated
dust.

- 12 -
Sprocket
The sprocket is subjected to especially high wear and tear.
If you notice deep wear marks on the teeth, the sprocket
must be replaced. A worn sprocket curtails the service
life of the saw chain. Have the sprocket replaced by an
authorised service centre.
Sharpening the saw chain
WARNING: We advise you to have the deep or important
sharpening carried out by a service agent who is equipped
with an electric sharpener.
When the chain penetrates into wood with difficulty, it
needs sharpening as follows:
1. Put the chain under tension
2. Fasten the bar in a vice so that the chain can slide (Fig.
23).
3. Fasten the file to the file holder and place it on cutter at
35˚ angle (Fig. 24).
4. File with forward strokes only until all the worn out parts
of the cutting edge is removed.
5. Count the number of strokes given to the cutter as
a reference basis and file away the same number of
strokes on all other cutters.
6. If after sharpening a few times, the depth gauge
protrudes from the template, you must reset its level
using a at file (Fig. 25).
7. Finally, round off the depth gauge (Fig. 26).
Guide bar
The guide bar is subjected to especially severe wear and
tear at the nose and the bottom. To avoid one-sided wear
and tear, turn the guide bar over every time you sharpen
the chain.
1. When you have finished working, clean out the groove
and the oil passages, with a special scraping hook (Fig.
27).
2. Periodically trim the sides of the rails using a at file. If
not done in the long run, the “feathered edges” might
break away and damage the bar. (Fig. 28).
3. If one rail is higher than the other one, it is necessary to
make it even with a at file and then smooth them with a
file or fine grain abrasive paper (Fig. 29).

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NOTE

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NOTE

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