GK1935 | Black&Decker GK1935 CHAINSAW instruction manual

New Zealand
Intended use
Your Black & Decker chainsaw has been designed for
pruning and felling trees and cutting logs. This tool is
intended for consumer use only.
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.
1. Work area
a. Keep work area clean and well lit. Cluttered and dark areas
invite accidents.
b. Do not operate power tools in explosive atmospheres, such
as in the presence of flammable liquids, gases or dust.
Power tools create sparks which may ignite the dust or
c. Keep children and bystanders away while operating a
power tool. Distractions can cause you to lose control.
2. Electrical safety
a. 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.
b. 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
c. Do not expose power tools to rain or wet conditions. Water
entering a power tool will increase the risk of electric shock.
d. 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.
e. 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.
3. Personal safety
a. 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 influence of drugs,
alcohol or medication. A moment of inattention while
operating power tools may result in serious personal injury.
b. 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.
d. 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.
e. Do not overreach. Keep proper footing and balance at all
times. This enables better control of the power tool in
unexpected situations.
f. 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.
g. 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
4. Power tool use and care
a. 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.
b. 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.
c. 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.
d. 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.
e. 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.
f. Keep cutting tools sharp and clean. Properly maintained
cutting tools with sharp cutting edges are less likely to bind
and are easier to control.
g. 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 those intended could result in a hazardous situation.
5. Service
a. 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.
Causes and operator prevention of kickback:
Additional safety instructions for the chainsaw
Keep all parts of the body away from the saw chain when
the chainsaw is operating. Before you start the chainsaw,
make sure the saw chain is not contacting anything. A
moment of inattention while operating the chainsaw may
cause entanglement of your clothing or body with the
Always hold the chainsaw with your right hand on the
rear handle and your left hand on the front handle.
Holding the chainsaw with the reversed hand configuration
increases the risk of personal injury and should never be
Wear safety glasses and hearing protection. Further
protective equipment for head, hands, legs and feet is
recommended. Adequate protective clothing will reduce
personal injury by flying debris or accidental contact with
the saw chain.
Do not operate a chainsaw in a tree. Operation of a
chainsaw while up in a tree may result in personal injury.
Always keep proper footing and operate the chainsaw
only when standing on fixed, secure and level surface.
Slippery or unstable surfaces such as ladders may cause a
loss of balance or control of the chainsaw.
When cutting a limb that is under tension be alert for
spring back. When the tension in the wood fibres is
released the spring loaded limb may strike the operator
and/or throw the chainsaw out of control.
Use extreme caution when cutting brush and saplings.
The slender material may catch the saw chain and be
whipped toward you or pull you off balance.
Carry the chainsaw by the front handle with the
chainsaw switched off and away from your body. When
transporting or storing the chainsaw always fit the guide
bar cover. Proper handling of the chainsaw will reduce the
likelihood of accidental contact with the moving saw chain.
Follow instructions for lubricating, chain tensioning and
changing accessories. Improperly tensioned or lubricated
chain may either break or increase the chance for kickback.
Keep handles dry, clean, and free from oil and grease.
Greasy, oily handles are slippery causing loss of control.
Cut wood only. Do not use chainsaw for purposes not
intended. For example: do not use the chainsaw for
cutting plastic, masonry or non-wood building materials.
Use of the chainsaw for operations different than intended
could result in a hazardous situation.
Tip contact in some cases may cause a sudden reverse
reaction, kicking the guide bar up and back towards the
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.
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 lose control of the
chainsaw which could result in serious personal injury. Do
not rely exclusively upon the safety devices built into your
chainsaw. As a chainsaw user, you should take several steps
to keep your cutting jobs free from accident or injury.
Kickback is the result of tool misuse and / or incorrect
operating procedures or conditions and can be avoided by
taking proper precautions as given below:
Maintain a firm grip, with thumbs and fingers encircling
the chainsaw handles. With both hands on the chainsaw,
position your body and arm to allow you to resist
kickback forces. Kickback forces can be controlled by the
operator, if proper precautions are taken. Do not let go of
the chainsaw.
Do not overreach and do not cut above shoulder height.
This helps prevent unintended tip contact and enables
better control of the chainsaw in unexpected situations.
Only use replacement guide bars and chains specified by
the manufacturer. Incorrect replacement guide bars and
chains may cause chain breakage and/or kickback.
Follow the manufacturer's sharpening and maintenance
instructions for the saw chain. Decreasing the depth
gauge height can lead to increased kickback.
Safety recommendations for the chainsaw
We strongly recommend that first time users obtain
practical instruction in the use of the chainsaw and
protective equipment from an experienced user. Initial
practice should be completed sawing logs on a saw horse
or cradle.
We recommend that when carrying the chainsaw that you
make sure that the brake is engaged
Maintain your chainsaw when not in use. Do not store your
chainsaw for any length of time without first removing the
saw chain and guide bar which should be kept immersed in
oil. Store all parts of your chainsaw in a dry, secure place
out of reach of children.
We recommend you drain the oil reservoir prior to storage.
Be sure of your footing and pre-plan a safe exit from a
falling tree or branches.
Use wedges to help control felling and prevent binding the
guide bar and saw chain in the cut.
Saw chain care. Keep the saw chain sharp and snug on the
guide bar. Ensure the saw chain and guide bar are clean
and well oiled. Keep handles dry, clean and free from oil
and grease.
Kickback can be caused by:
Striking branches or other objects accidentally with a tip of
the saw while the saw chain is moving.
Striking metal, cement or any other hard material near the
wood, or buried in the wood.
A dull or loose chain.
Cutting above shoulder height.
Lack of attention when holding or guiding the chainsaw
while cutting.
Over-reaching. Keep proper footing and balance at all times
and do not overreach.
Do not try to insert into a previous cut. As this could cause
kickback. Make a fresh cut every time.
We strongly recommend you do not attempt to operate
your chainsaw while in a tree, on a ladder or on any other
unstable surface. If you decide to do so, be advised that
these positions are extremely dangerous.
When cutting a branch that is under tension, be alert for
spring back so that you will not be struck when the tension
is released.
Avoid cutting:
Prepared timber.
Into the ground.
Into wire fences, nails. etc.
Into small sized brush and saplings because slender
material may catch the saw chain and be whipped towards
you, or pull you off balance.
Do not use your chainsaw above shoulder height.
Ensure someone is nearby (but at a safe distance) in case
of an accident.
If for any reason you have to touch the saw chain, make
sure your chainsaw is disconnected from the mains.
The noise from this product can exceed 85 dB(A).
We therefore recommend you take appropriate measures
for the protection of hearing.
The following warning symbols are found on your tool:
Read all of this manual carefully.
Do not use your saw in wet conditions or
expose it to rain.
Always wear ear and eye protection.
Check the chain tension after every 10
minutes of use. Adjust back to a clearance of
3 mm.
Always remove the plug from the socket before
inspecting a damaged cable. Be careful not to
use your chainsaw if the cable is damaged.
The noise from this product can exceed 85 dB(A).
Electrical safety
This tool is double insulated; therefore no earth
wire is required. Always check that the power
supply corresponds to the voltage on the rating
Additional safety instructions
This appliance is not intended for use by young or infirm
persons without supervision. Children must be supervised
to ensure they do not play with the appliance.
If the supply cord is damaged, it must be replaced by the
manufacturer or an authorised Black & Decker Service
Centre in order to avoid a hazard.
Guard against electric shock.
Prevent body contact with earthed or grounded surfaces
(e.g. metal railings, lamp-posts etc.). Electric safety can be
further improved by using a high-sensitivity (30 mA/30mS)
Residual Current Device (RCD).
Warning! The use of an RCD or other circuit breaker unit does
not release the operator of your chainsaw from the safety
instructions and safe working practices given in this user
1. On/off switch
2. Lock-off button
3. Oil cap
4. Front guard/chain brake assembly
5. Chain tension adjustment screw
6. Chain
7. Guide bar
8. Chain sheath
9. Chain cover knob
10. Chain cover assembly
11. Oil level indicator
Oiling the chain (fig. A)
You must do this whenever you use a new chain (6) for the
first time. Take the new chain (6) out of its plastic bag and
soak it in chain oil for at least an hour before using it. Use
Black & Decker chain oil
We recommend that you use only one brand of oil during the
lifetime of your chainsaw because mixtures of different oils
could lead to the oil becoming degraded, which can
drastically shorten the lifetime of the saw chain.
Never use waste oil, thick oil or very thin sewing machine oil.
These may damage your chainsaw.
Fitting the guide bar and chain (fig. A - F)
Always wear protective gloves when working on
your chainsaw.
Place the chainsaw onto a stable surface.
Loosen and remove the chain cover knob (9) (fig. A).
Set the front guard to position (fig. C).
Remove the chain cover assembly (10).
Place the chain (6) over the guide bar (7) making sure that
the saw chain cutters on the upper part of the guide bar (7)
face towards the front (fig. B).
Guide the chain (6) around the guide bar (7) and pull it to
create a loop to one side at the rear end of the guide bar (7).
Place the chain (6) and guide bar (7) onto the chainsaw.
Guide the chain (6) around the drive sprocket (12). Place the
guide bar (7) onto the studs (13). Make sure that the sliding
nut peg (14) locates into the tensioning hole (15) (fig. E).
Make sure that the chain brake assembly (4) is in the set
position before refitting (fig. C).
Place the chain cover assembly (10) onto the chainsaw.
Fit the chain cover knob (9) and tighten it finger tight.
Turn the chain tension adjustment screw (5) (fig. E)
clockwise until the chain is tight. Make sure that the chain
is snug around the guide bar. Do not overtighten.
Tighten the chain cover knob (9).
Checking and adjusting the chain tension (fig. E & G)
Before use and after every 10 minutes of use, you must
check the chain tension.
Lightly pull on the chain (6) as shown (inset fig. G). The
tension is correct when the chain (6) snaps back after being
pulled 3 mm away from the guide bar (7). There should be
no "sag" between the guide bar (7) and chain (6) on the
Note: Do not over-tension the chain (6) as this will lead to
excessive wear and will reduce the life of the guide bar (7)
and the chain (6).
Note: When the chain (6) is new, check the tension
frequently (after disconnecting from the mains) during the
first 2 hours of use as a new chain (6) stretches slightly.
To increase the tension:
Turn the chain tension adjustment screw (5) clockwise.
Filling the oil reservoir (fig. F)
Remove the oil cap (3) and fill the reservoir with the
recommended chain oil. You can see the oil level in the oil
level indicator (11). Refit the oil cap (3).
Periodically switch off and check the oil level indicator (11);
if it is less than a quarter full, disconnect your chainsaw
from the mains and refill with the correct oil.
Auto-stop chain brake (fig. C)
This tool is fitted with an auto-stop chain brake assembly
(4) which will stop the chain (6) within 150 ms each time
you release the rear trigger, or if kickback should occur. The
chain brake assembly (4) should be tested before every use.
How to set the chain brake (fig. C)
Make sure that the tool is disconnected from the mains
Pull the front guard/chain brake assembly (4) back into the
"set" position marked (fig. C).
The tool is now ready to use.
How the anti-kickback chain brake works
In the event of kickback, your left hand comes in contact with
the front guard, pushing it forwards, toward the workpiece,
and stops the tool within 150 ms.
How the inertia activated chain brake works
The front guard/chain brake assembly (4) is activated when
the front hand guard is pushed forward, either manually, by
the back of the users hand or by its own weight. The
advantage of the inertia brake is that it is activated by a
severe kickback, e.g. When the chain (6) hits metal, even if
the users hand does not contact the front guard, i.e. when
the chainsaw is in the felling position.
How to test the anti-kickback chain brake (fig. C)
Grip the tool firmly in both hands on a firm surface make
sure the saw chain (6) is clear of the ground and switch on
(see" How to switch the chainsaw on").
Rotate your left hand forward around the front handle so
that the back of your hand comes in contact with the front
guard/chain brake assembly (4) and pushes it forwards,
toward the workpiece (fig. C). The saw chain (6) should
stop within a few fractions of a second
To reset after the operation of the front guard/chain brake
assembly (4):
Follow the instructions for "How to set the chain brake".
Note: It will not be possible to switch the tool on if the front
guard/chain brake assembly (4) is not in the "set"
position .
Note: Avoid re-starting the tool until you hear the motor
come to a complete rest.
Note: If the saw chain (6) does not come to rest immediately
then this indicates that it needs tensioning (see "Fitting the
guide bar and chain").
fall at the base of the tree (fig. H). The second cut is made
from above to intersect with the first and make a notch of
about 45°.
How to switch the tool on (fig. F)
Grip your chainsaw firmly with both hands. Push the lockoff button (2) forward and then push the on/off switch (1) to
When the motor starts, remove your thumb from the lock
button (2) and grip the handle firmly.
Make a single horizontal felling cut from the other side 1-2
inches above the centre of the direction notch. (fig. I). Do not
cut through to the direction notch, you could lose control of
the direction of fall.
Do not force the tool - allow it to do the work.
Pruning trees
It will do a better and safer job at the speed for which it is
designed. Excessive force will stretch the saw chain (6).
Make sure that there are no local by-laws or regulations that
would prohibit or control the pruning of the tree limbs.
Pruning should only be undertaken by experienced users
there is an increased risk of the saw chain pinching and kick
If the saw chain (6) or guide bar (7) becomes jammed:
Switch the tool off.
Disconnect the tool from the mains supply.
Open the cut with wedges to relieve the strain on the guide
bar (7). Do not try to wrench the chainsaw free. Start a fresh
Felling (fig. H - J)
Inexperienced users should not attempt to fell trees. The
user may suffer injury or damage to property as a result of
failure to control the direction of fall, the tree may splinter or
damaged / dead branches may fall during cutting.
The safe distance between a tree to be felled and
bystanders, buildings and other objects is at least 2 1/2
times the height of the tree. Any bystander, building or
object within this distance is at risk from being struck by the
tree when felled.
Before attempting to fell a tree:
Make sure that there are no local by-laws or regulations
that would prohibit or control the felling of the tree.
Consider all conditions that may affect the direction of fall,
The intended direction of fall.
The natural lean of the tree.
Any unusual heavy limb structure or decay.
Surrounding trees and obstacles including overhead lines
and underground drains.
The wind speed and direction.
Drive a wedge or wedges into the felling cut to open it and
drop the tree (fig. J).
Before pruning consideration should be given to conditions
affecting the direction of fall including:
The length and weight of the branch to be cut.
Any unusual heavy limb structure or decay.
Surrounding trees and obstacles including overhead.
The wind speed and direction.
The branch being intertwined with other branches.
The operator should consider access to the tree limb and the
direction of fall. The tree branch is liable to swing towards
the tree trunk. In addition to the user bystanders, objects and
property below the branch will be at risk.
To avoid splintering, the first cut is made in an upward
direction to a maximum depth of one third the diameter of
the branch. The second cut is made downwards to meet the
Pre-plan a safe exit from falling trees or branches. Make
sure that the exit route is clear of obstacles that would
prevent or hinder movement. Remember wet grass and
freshly cut bark is slippery.
Do not attempt to fell trees where the tree diameter is
greater than the cutting length of the chainsaw.
A direction notch is cut to determine the direction of fall.
A horizontal cut is made to a depth of between 1/5th and 1/
3rd of the diameter of the tree, perpendicular to the line of
Logging (fig. K, L & M)
How you should cut depends on how the log is supported.
Use a saw horse whenever possible. Always start a cut with
the saw chain (6) running and the spiked bumper (17) in
contact with the wood (fig. K). To complete the cut use a
pivoting action of the spiked bumper against the wood.
When supported along its whole length:
Make a downward cut, but avoid cutting the earth as this
will blunt your saw chain quickly.
When supported at both ends:
First, cut one third down to avoid splintering and second,
cut again to meet the first cut,
When supported at one end:
First cut one third up to avoid splintering and second, cut
down to prevent splintering.
When on a slope (fig. L):
Always stand on the uphill side.
When using a saw horse (fig. M):
This is strongly recommended whenever possible.
Position the log in a stable position. Always cut on the
outside of the saw horse arms. Use clamps or straps to
secure the workpiece.
Mains plug replacement (U.K. & Ireland only)
When attempting to cut a log on the ground secure the
workpiece using chocks or wedges. The user or a bystander
should not steady the log by sitting or standing on it. Ensure
the saw chain does not contact the ground.
If a new mains plug needs to be fitted:
Safely dispose of the old plug.
Connect the brown lead to the live terminal in the new plug.
Connect the blue lead to the neutral terminal.
Warning! No connection is to be made to the earth terminal.
Follow the fitting instructions supplied with good quality plugs.
Recommended fuse: 10 A.
Protecting the environment
Regular maintenance ensures a long effective life for the
tool. We recommend you make the following checks on a
regular basis.
Oil level
The level in the reservoir should not be allowed to fall below
a quarter full.
Saw chain and guide bar (fig. G)
After every few hours of use, remove the guide bar (7) and
the saw chain (6) and clean them thoroughly.
On reassembling, the guide bar (7) should be turned
through 180° and the sprocket nose greased via the
sprocket lubrication hole (16). This ensures an even
distribution of wear around the guide bar rails.
Saw chain sharpening
If you are to get the best possible performance from the tool
it is important to keep the teeth of the saw chain sharp.
Guidance for this procedure is found on the sharpener
package. For this purpose we recommend the purchase of
the Black & Decker saw chain sharpening kit (available from
Black & Decker service agents and selected dealers).
Replacing worn out saw chains
Replacement saw chains are available through retailers or
Black & Decker service agents. Always use genuine spare
Saw chain sharpness
The saw chain cutters will blunt immediately if they touch
the ground or a nail whilst cutting.
Saw chain tension
Regularly check the saw chain tension.
What to do if your chainsaw needs repair.
Your chainsaw is in accordance with the relevant safety
requirements. Repairs should only be carried out by a
qualified person using original spare parts otherwise this
may result in considerable danger to the user. We
recommend you keep this user manual in a safe place.
Should you find one day that your tool needs
replacement, or if it is of no further use to you,
think of the protection of the environment. Black
& Decker repair agents will accept old Black &
Decker tools and ensure that they are disposed of
in an environmentally safe way.
Separate collection of used products and
packaging allows materials to be recycled and
used again. Re-use of recycled materials helps
prevent environmental pollution and reduces the
demand for raw materials.
Local regulations may provide for separate collection of
electrical products from the household, at municipal waste
sites or by the retailer when you purchase a new product.
Black & Decker provides a facility for the collection and
recycling of Black & Decker products once they have reached
the end of their working life. To take advantage of this
service please return your product to any authorised repair
agent who will collect them on our behalf.
You can check the location of your nearest authorised repair
agent by contacting your local Black & Decker office at the
address indicated in this manual. Alternatively, a list of
authorised Black & Decker repair agents and full details of
our after-sales service and contacts are available on the
Internet at: www.2helpU.com.
Technical data
GK1730 GK1735 GK1740 GK1930 GK1935 GK1940
Voltage 230
input (W)
No load 5500
length (cm)
Weight 5.55
European Community design registration no.
EC declaration of conformity
GK1730; GK1735; GK1740; GK1930; GK1935;GK1940
Black & Decker declares that these products conform to:
98/37/EC. 89/336/EEC. 73/23/EEC. 2002/96/EC. 2002/95/EC.
EN 50144. EN 55014. EN61000. EN60745
2000/14/EC. Chainsaw _ 1600 w. Annex V
Level of sound pressure measured according to 2000/14/EC:
LpA (sound pressure) 94.2 dB(A)
LWA (acoustic power) 105.2 dB(A)
LWA (guaranteed) 104 dB(A)
Always wear ear protection if the sound pressure exceeds
85 dB (A).
Hand/arm weighted vibration value according to EN 60745:
3.5 m/sec2
Black & Decker is confident of the quality of its products and
offers an outstanding guarantee. This guarantee statement
is in addition to and in no way prejudices your statutory
rights. The guarantee is valid within the territories of the
Member States of the European Union and the European
Free Trade Area.
If a Black & Decker product becomes defective due to faulty
materials, workmanship or lack of conformity, within 24
months from the date of purchase, Black & Decker
guarantees to replace defective parts, repair products
subjected to fair wear and tear or replace such products to
ensure minimum inconvenience to the customer unless:
The product has been used for trade, professional or hire
The product has been subjected to misuse or neglect.
The product has sustained damage through foreign objects,
substances or accidents.
Repairs have been attempted by persons other than
authorised repair agents or Black & Decker service staff.
To claim on the guarantee, you will need to submit proof of
purchase to the seller or an authorised repair agent. You can
check the location of your nearest authorised repair agent by
contacting your local Black & Decker office at the address
indicated in this manual. Alternatively, a list of authorised
Black & Decker repair agents and full details of our aftersales service and contacts are available on the Internet at:
Please visit our website www.blackanddecker.co.uk to
register your new Black & Decker product and to be kept up
to date on new products and special offers. Further
information on the Black & Decker brand and our range of
products is available at www.blackanddecker.co.uk.
Kevin Hewitt
Director of Consumer Engineering
Spennymoor, County Durham
DL16 6JG,
United Kingdom
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