Bosch AKE 40-19 PRO manual

View a manual of the Bosch AKE 40-19 PRO below. All manuals on can be viewed completely free of charge. By using the 'Select a language' button, you can choose the language of the manual you want to view.

  • Brand: Bosch
  • Product: Chain saw
  • Model/name: AKE 40-19 PRO
  • Filetype: PDF
  • Available languages: Dutch, English, German, French, Spanish, Italian, Swedish, Portuguese, Danish, Polish, Russian, Romanian, Slovak, Hungarian, Slovene, Croatian, Ukrainian, Norwegian, Finnish, Turkish

Table of Contents

Page: 17
English - 1
WARNING! Read all safety warnings and all in-
structions. Failure to follow the warnings and instruc-
tions may result in electric shock, fire and/or serious
Save all warnings and instructions for future refer-
The term “power tool” in the warnings refers to your
mains operated (corded) power tool.
It is recommended that the first time user should have
practical instruction in the use of the chainsaw and the
protective equipment from an experienced operator
and that the initial practice should be cutting logs on a
saw horse or cradle.
Explanation of symbols:
Read instruction manual.
Do not expose to rain.
Remove the plug from the socket or mains im-
mediately before carrying out any adjust-
ments, servicing or maintenance or if the ca-
ble is damaged or cut.
Obtain and wear eye and ear protection at all
times while operating the power tool.
The kick back brake and the run down
brake stop the chain saw within short
Work area
■ Keep work area clean and well lit. Cluttered and
dark areas invite accidents.
■ Do not operate power tools in explosive atmos-
pheres, such as in the presence of flammable
liquids, gases or dust. Power tools create sparks
which may ignite the dust or fumes.
■ Keep children and bystanders away while oper-
ating a power tool. Distractions can cause you to
lose control.
■ Children and juveniles, except above age 16,
under supervision and for educational pur-
poses, must not operate the chain saw, nor
should persons unfamiliar with the saw or its
handling (when borrowing). Ensure operation
manual is with the saw. Persons unfit or tired must
not operate the chain saw.
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 condi-
tions. 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 in-
crease 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.
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 influence of drugs, alcohol or medi-
cation. A moment of inattention while operating
power tools may result in serious personal injury.
■ Use safety equipment. Always wear eye protec-
tion. Safety equipment such as dust masks, non-
skid safety shoes, hard hat, or hearing protection
used for appropriate conditions will reduce per-
sonal 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 plug-
ging in power tools that have the switch on invites
■ 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 re-
sult in personal injury.
■ Do not overreach. Keep proper footing and bal-
ance 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
■ Disconnect the plug from the power source be-
fore making any adjustments, changing acces-
sories, or storing power tools. Such preventive
safety measures reduce the risk of starting the
power tool accidentally.
Safety Notes
F016 L70 532 - Buch Seite 1 Freitag, 18. April 2008 9:07 09
18 • F016 L70 532 • 08.04
Page: 18
English - 2
■ Store idle power tools out of the reach of chil-
dren 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 tool’s 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 those
intended could result in a hazardous situation.
■ Have your power tool serviced by a qualified re-
pair person using only identical replacement
parts. This will ensure that the safety of the power
tool is maintained.
Chain Saw Safety Warnings:
■ Keep all parts of the body away from the saw
chain when the motor is operating. Before you
start the saw, make sure the saw chain is not
contacting anything. A moment of inattention
while operating chain saws may cause entangle-
ment of your clothing or body with the saw chain.
■ Always hold the chain saw with your right hand
on the rear handle and your left hand on the
front handle. Holding the chain saw with a re-
served hand configuration increases the risk of per-
sonal injury and should never be done.
■ Wear safety glasses and hearing protection.
Further protective equipment for head, hand,
legs and feet is recommend. Adequate protective
clothing will reduce personal injury by flying debris
or accidental contact with saw chain.
■ Do not operate a chain saw in a tree. Operation
of a chain saw in a tree, may result in personal in-
■ Always keep proper footing and operate the
chain saw 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 chain saw.
■ 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 chain saw 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
■ Carry the chain saw by the front handle with the
saw chain stopped and the guide bar pointing
to the rear. When transporting or storing the
chain saw always fit the guide bar cover. Proper
handling of the chain saw will reduce the likelihood
of accidental contact with the moving saw chain.
■ Follow instructions for lubricating, chain ten-
sioning 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. Don’t use chain saw for pur-
poses not intended – for example – Don’t use
chain saw for cutting plastic, masonry or non-
wood building materials. Use of the chain saw for
operations different then intended could result in a
hazardous situation.
Causes and Operator Prevention of Kickback:
– 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 sudden re-
verse 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 lose
control of the saw which could result in serious per-
sonal injury. Do not rely exclusively upon the safety
devices built into your saw. As a chain saw 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 chain saw handles, with both
hands on the saw and position your body and
arm to allow you to resist kickback forces. Kick-
back forces can be controlled by the operator, if
proper precautions are taken. Do not let go of the
chain saw.
■ Do not over reach and do not cut above shoul-
der height. This helps prevent unintended tip con-
tact and enables better control of the chain saw in
unexpected situations.
■ Only use replacement bars and chains speci-
fied by the manufacturer. Incorrect replacement
bars and chains may cause chain breakage and/or
■ Follow the manufacturer’s sharpening and
maintenance instructions for the saw chain. De-
creasing the depth gauge height can lead to in-
creased kickback.
F016 L70 532 - Buch Seite 2 Freitag, 18. April 2008 9:07 09
19 • F016 L70 532 • 08.04
Page: 19
English - 3
The chain saw is intended for sawing of trees, tree
trunks, branches, wooden beams, planks, etc. Cuts
can be sawed with or across the grain. This product
is not suitable for sawing mineral materials.
This manual gives instructions on the correct as-
sembly and safe use of your chain saw. It is impor-
tant that you read these instructions carefully.
Carefully remove the machine from its packaging
and check for complete contents:
– Chain saw
– Cover plate
– Chain
– Chain bar
– Chain guard
– Chain oil (80 ml)
– Operating instructions
When parts are missing or damaged, please contact your
1 Rear handle
2 On/Off switch
3 Lock-off button
4 Oil filler cap
5 Activation lever for kickback brake
(hand guard)
6 Deactivation mark for kickback brake
7 Front handle
8 Nose sprocket
9 Chain guard
10 Chain
11 Chain bar
12 Gripping teeth
13 Tensioning ring (red)
14 Locking knob
15 Cover plate
16 Chain tensioning catch
17 Fastening bolt
18 Guide fins for chain bar
19 Oil outlet
20 Symbol for rotation and cutting direction
21 Drive sprocket
22 Chain catch bolt
23 Mains plug**
24 Serial Number
**Country specific
Not all of the accessories illustrated or described are
included as standard delivery.
Product Specification
Chain saw AKE 35-19 PRO AKE 40-19 PRO
Part number (typ) 0 600 836 7.. 0 600 836 8..
Tool-less chain tensioning (SDS) ● ●
Rated power [W] 1900 1900
Chain speed (no load) [m/s] 13 13
Chain bar length [cm] 35 40
Nose sprocket ● ●
Kickback Brake ● ●
Run down brake ● ●
Chain type 3/8" - 91 3/8" - 91
Drive link thickness [mm] 1.3 (0.05") 1.3 (0.05")
Amount of drive links 52 57
Oil reservoir capacity [ml] 200 200
Automatic oiler ● ●
Metal gripping teeth ● ●
Weight without mains cable. approx. ** [kg] 4.6 4.7
Protection class / II / II
**measured with chain bar and chain
Note: Please observe the order number of your machine. The trade names of individual machines can vary.
Inrush currents cause short-time voltage drops. Under unfavourable power supply conditions, other equipment may
be affected. If the system impedance of the power supply is lower than 0.25 Ohm, disturbances are unlikely to occur.
Intended Use
Delivered Items
Operating Controls
F016 L70 532 - Buch Seite 3 Freitag, 18. April 2008 9:07 09
20 • F016 L70 532 • 08.04
Page: 20
English - 4
Electrical Safety
Your machine is double insulated for safety and re-
quires no earth connection. The operating voltage is
230 V AC, 50 Hz (for non-EU countries 220 V,
240 V as applicable). Only use approved extension
cables. Extension cords/leads should only be used
if they comply with H07-F types or IEC
(60227 IEC 53).
If you want to use an extension cable when operat-
ing your product, only the following cable dimen-
sions should be used:
– 1.0 mm2: max length 40 m
– 1.5 mm2: max length 60 m
– 2.5 mm2: max length 100 m
It is recommended for increased electrical safety to
use a Residual Current Device (RCD) with a tripping
current of not more than 30 mA. Always check your
RCD every time you use it.
For products not sold in GB: WARNING: For
safety, it is essential that the mains plug 23 attached
to the machine is fitted to the power supply cable 25
as shown.
The couplings of connection leads must be pro-
tected against splashes and the coupling sockets on
the leads must be made of rubber or coated with
Fixing means for the connection leads must be
The connection lead must be inspected for signs of
damage at regular intervals and may only be used if
in perfect condition.
If the supply cord is damaged, it must be replaced by
a Bosch Service Centre.
Products sold in GB only: Your chain saw is fitted
with an approved 13 A (BS 1363/A) electric plug and
is protected by a 13 A fuse (ASTA Approved to
BS 1362).
If the fitted plug is not suitable for your socket out-
lets, it should be cut off and an appropriate plug fit-
ted in its place by an authorized customer service
The severed plug must be disposed of to avoid a
possible shock hazard and should never be inserted
into a 13 A socket elsewhere.
Do not connect the chain saw to mains be-
fore it is completely assembled.
■ Always use gloves when handling the chain.
Chain and chain bar Assembly
1. Unpack all parts carefully.
2. Align the two assembly arrows on the ten-
sioning ring 13 and cover plate 15.
3. Place the chain saw on any suitable flat surface.
Use only genuine Bosch chains designed
for chainbars with 1.3 mm groove (gauge).
4. Slide the chain 10 in the slot around the chain
bar 11. Ensure chain is in correct running direc-
tion by comparing with chain symbol 20. Ensure
the chain tensioning catch 16 is facing outwards.
5. Fit the chain onto the drive sprocket 21 and guide
the chain bar 11, so that the fastening bolt 17 and
the two guide fins 18 fit into the keyway of the
chain bar 11.
For Your Safety
Warning! Switch off, remove plug from mains
before adjusting cleaning or if the cable is cut,
damaged or entangled.
Caution! Do not touch rotating chain.
Do not operate chain saw near other people,
children or animals. Do not operate chain saw
after drinking alcohol or under the influence of
intoxicating drugs or medication.
F016 L70 532 - Buch Seite 4 Freitag, 18. April 2008 9:07 09
21 • F016 L70 532 • 08.04
Page: 21
English - 5
6. Check if all parts are seated properly and hold
chain and chain bar in a level position.
7. Fit cover plate, check that arrows are still aligned
and ensure that the chain catch bolt 22 fits into
the groove of the cover plate 15.
8. Screw on the cover plate 15 with the locking
knob 14.
The chain is not yet tensioned. Tensioning the chain
applies as described under “Tensioning chain”, item
1 – 7.
Tensioning chain
Always check the chain tension before use, after the
first cuts and regularly during use, approx. every
10 minutes. Upon initial operation, new chains can
lengthen considerably.
The chain life of the saw chain mainly depends upon
sufficient lubrication and correct tensioning.
Avoid tensioning the chain if it is hot, as this will
cause the chain to become overtensioned when it
cools down.
1. Place the chain saw on any suitable flat surface.
2. Turn locking knob 14 approx. 1 – 3 turns anti-
clockwise to loosen the chain bar.
3. Check if the chain links are correctly located in
the slot around the chain bar 11 and drive
sprocket 21.
4. Turn the red tensioning ring 13 clockwise ratchet-
ing until the correct chain tension is reached. The
ratchet mechanism prevents the chain tension
from loosening. The locking knob 14 may also
turn, when turning the tension ring 13. If the ten-
sioning ring 13 is hard to turn, loosen the locking
knob 14 once more anticlockwise.
5. The correct chain tension is reached when the
chain 10 can be raised approx. 3 – 4 mm from the
chain bar in the centre. This should be done by
using one hand to raise the chain against the
weight of the machine.
6. If the chain 10 is overtensioned, turn tensioning
ring 13 anticlockwise to loosen the chain.
7. If the chain 10 is tensioned optimal, lock the chain
bar 11 by tightening the locking knob 14 in clock-
wise direction. Do not use tools.
15 22
3-4 mm
F016 L70 532 - Buch Seite 5 Freitag, 18. April 2008 9:07 09
22 • F016 L70 532 • 08.04
Page: 22
English - 6
Important: The chain saw is not supplied
filled with oil. It is essential to fill with oil
before use. Never operate the chain saw
without chain oil or at an empty oil tank
level, as this will result in extensive dam-
age to the product.
Chain life and cutting capacity depend on optimum
lubrication. Therefore, the chain is automatically
oiled during operation via the oil outlet 19.
Filling oil tank:
– Set chain saw on any suitable surface with oil
filler cap 4 facing upward.
– Clean area around the oil filler cap 4 with cloth,
unscrew cap.
– Do not remove filter insert during filling.
– Add Bosch biodegradable chain saw oil until tank
is full.
– Avoid dirt or debris entering oil tank, refit oil filler
cap 4 and tighten.
Important: To allow venting of the oil res-
ervoir,small breather channels are pro-
vided between the oil filler cap and the
strainer, to prevent leakage ensure ma-
chine is left in a horizontal position (oil
filler cap 4 uppermost) when not in use.
It is important to use only the recommended bi-
odegradable oil to avoid damage to the chain
saw. Never use recycled/old oil. Use of non ap-
proved oil will invalidate the warranty.
Observe the correct mains voltage! The voltage
of the power source must agree with the value given
on the nameplate of the machine. Machines desig-
nated for 230 V can also be operated with 220 V.
Switching On and Off
Hold chain saw as described in “Cutting”.
For switching on the machine, press the lock-off
button 3, then fully press the On/Off switch 2 and
hold in this position. The lock-off button 3 can now
be released.
For switching off, release the On/Off switch 2.
Do not stop chain saw after sawing by activating
the front hand guard (kickback brake).
The chain saw is equipped with two chain brake sys-
tems for user safety:
The run down brake automatically stops the chain
and motor after the switch lever (On/Off) 2 is re-
The kickback brake is a safety mechanism acti-
vated through the front hand guard 5, when kickback
occurs. Chain stops immediately.
The following function check should be carried out at
regular intervals. Push front hand guard 5 forward
(position ➋) that the red marker 28 under indicator 6
is visible and start the chain saw. The chain must not
start. To deactivate the kickback brake, pull hand
guard 5 backwards (position ➊) that the red
marker 28 under the indicator 6 is covered.
Before Cutting
Before and periodically during cutting check as fol-
– Is the chain saw in a fail-safe condition?
– Is the oil tank filled? Check oil level gauge 26
prior to starting and regularly during operation.
Refill oil when oil level is low. The oil tank filling
will last approx. 15 minutes, depending on saw-
ing intensity and stops.
– Is the chain tension in order and is the chain
sharp? Check chain tension every 10 minutes
during operation. Upon initial operation, new
chains can lengthen considerably. The condition
of the chain influences the the cutting perform-
ance. Only a sharp chain protects from overload.
– Is the kickback brake deactivated and its function
– Are you wearing the necessary protective equip-
ment? Wear safety glasses and hearing protec-
tion. Further protective equipment for head, hand,
legs and feet is recommend. Adequate protective
clothing will reduce personal injury by flying de-
bris or accidental contact with saw chain.
Kickback is the sudden backward/upward motion of
the chain saw, occuring when the chain (at the tip of
the chain bar) comes in contact with a log or wood,
or when the chain becomes jammed.
When kickback occurs the chainsaw reacts unpred-
icably and can cause severe injuries to the operator
or bystanders.
Particular attention must be given when sawing
sidewards, slanted or during length cuts, as the grip-
ping teeth 12 usually can not be applied.
Starting and Stopping
Kickback Brake/
Run Down Brake
F016 L70 532 - Buch Seite 6 Freitag, 18. April 2008 9:07 09
23 • F016 L70 532 • 08.04
Page: 23
English - 7
To avoid kickback:
– Saw with the chain bar at a flat angle.
– Never work with a loose, widely stretched or
heavily worn out chain.
– Ensure chain is sharpened correctly.
– Never saw above shoulder height.
– Never work with the tip of the chainbar.
– Always hold chain saw firmly with both hands.
– Always use a Bosch low-kickback chain.
– Apply the metal gripping teeth 12 for leverage.
– Ensure correct chain tension.
General Behaviour
Always hold the chain saw firmly with both
hands. Front grip with the left hand and rear grip with
the right hand. Fully grip both handles at all times
during operation. Never operate chain saw using
only one hand. Ensure power cord is located to the
rear, away from the chain and wood and so pos-
tioned that it will not be caught on branches or the
like during cutting.
Use the chain saw only with secure footing. Hold
the chain saw at the right-hand side of your body.
The chain must be running at full speed before it
makes contact with the wood. Use the metal grip-
ping teeth 12 to secure the saw onto the wood be-
fore starting to cut. Use the gripping teeth as a lev-
erage point “X” while cutting.
Reset the gripping teeth at a lower point when saw-
ing thicker logs by pulling the chain saw slightly
backwards until the gripping teeth release, and repo-
sition at lower level to continue sawing. Do not re-
move the saw completely from the wood.
Do not force the chain while cutting, let the chain do
the work, using the gripping teeth 12 to apply mini-
mal leverage pressure.
Do not operate the chain saw with arms fully ex-
tended or attempt to saw areas which are difficult to
reach, or on a ladder. Never use the chain saw
above shoulder height.
Sawing is optimized when the chain speed remains
steady during cutting.
Beware when reaching the end of the cut. The
weight of the saw may change unexpectedly as it
cuts free from the wood. Accidents can occur to the
legs and feet.
Always remove the saw from a wood cut while the
saw is running.
Cutting Logs
Observe the following safety instructions:
Support logs so that the face sides at the cut
do not close in against each other, which would re-
sult in the chain being jammed or pinched.
Position and set short logs safely prior to sawing.
Saw only wood or wooden objects. When sawing, al-
ways take care to avoid hitting stones, nails, etc., as
these could be thrown up or cause damage to the
chain or serious injury to the operator or bystanders.
Keep a running saw clear of wire fencing or the
Use of the saw to thin out branches or bushes is not
Length cuts must be carried out with care, as lever-
age with the gripping teeth 12 is not possible. Saw at
a flat angle to avoid kickback.
When working on a slope, operate above or to the
side of the trunk or laying tree.
Be careful not to trip over tree stumps, branches,
roots, etc.
Cutting Wood under Tension
There is a high risk of accidents when sawing wood,
branch or trees under tension. Be extremely careful.
Leave saw jobs like these to professionals.
When sawing logs supported on both ends, start the
cut from above (Y) about 1/3 of the diameter into the
log and then finish the cut (Z) from below, in order to
avoid splitting of the log or jamming of the saw.
Avoid contact of the chain saw with the ground.
When sawing logs supported on only one end, start
the cut from below (Y) about 1/3 of the diameter into
the log and finish the cut from above (Z), in order to
avoid log splitting or jamming of the chain saw.
Felling Trees
Always wear hard hat to protect head
against falling branches.
The chain saw can only be used to fell trees
smaller in diameter than the length of the chain
➊ Secure work area. Ensure no persons or ani-
mals are in the vicinity of the falling tree.
Never attempt to free a jammed saw with the mo-
tor running. Use wooden wedges to free chain
and chain bar.
When cutting and felling operations are being per-
formed by two or more persons, at the same time,
the felling operations should be separated from the
cutting 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
company should be notified immediately.
F016 L70 532 - Buch Seite 7 Freitag, 18. April 2008 9:07 09
24 • F016 L70 532 • 08.04
Page: 24
English - 8
The chain saw operator should keep on the uphill
side of the terrain as the tree is likely to roll or slide
downhill after it is felled.
➋ An escape path should be planned and cleared
as necessary before cuts are started. The escape
path should extend back and diagonally to the rear
of the expected line of fall.
➌ 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.
Notching undercut: Make the notch (X – W)
1/3 the diameter of the tree, perpendicular to the di-
rection of falls as Make the lower horizontal notching
cut first. This will help to avoid pinching either the
saw chain or the guide bar when the second notch is
being made.
Felling back cut: Make the felling back cut (Y) at
least 50 mm higher than the horizontal notching cut.
Keep the felling back cut parallel to the horizontal
notching cut. Make the felling back cut so enough
wood is left to act as a hinge. The hinge wood keeps
the tree from twisting and falling in the wrong direc-
tion. Do not cut through the hinge.
As the felling gets close to the hinge the tree should
begin to fall. If there is any chance that the tree may
not fall in desired direction or it may rock back and
bind the saw chain, stop cutting before the felling
back cut is complete and use wedges of wood, plas-
tic or aluminium to open the cut and drop the tree
along the desired line of fall.
When the tree begins to fall remove the chain saw
from the cut, stop the motor, put the chain saw
down, then use the retreat path planned. Be alert for
overhead limbs falling and watch your footing.
To complete the felling operation, drive a wedge (Z)
into the horizontal cut.
Beware of falling branches when the tree starts to
Limbing a Tree
Limbing is removing the branches from a fallen
tree. When limbing leave larger lower limbs to sup-
port the log off the ground. Remove the small limbs
in one cut as illustrated. Branches under tension
should be cut from the bottom up to avoid binding
the chain saw.
Bucking a Log
Bucking is cutting a log into lengths. It is impor-
tant to make sure your footing is firm and your weight
is evenly distributed on both feet. When possible,
the log should be raised and supported by the use of
limbs, logs or chocks. Follow the simple directions
for easy cutting.
When the log is supported along its entire length as
illustrated, it is cut from the top (overbuck).
When the log is supported on one end, as illus-
trated, cut 1/3 the diameter from the underside (un-
derbuck). Then make the finished cut by overbuck-
ing to meet the first cut.
When the log is supported on both ends, as illus-
trated, cut 1/3 the diameter from the top overbuck.
Then make the finished cut by underbucking the
lower 2/3 to meet the first cut.
When bucking on a slope always stand on the
uphill side of the log, as illustrated. When "cutting
through”, to maintain complete control release the
cutting pressure near the end of the cut without re-
laxing your grip on the chain saw handles. Don’t let
the chain contact the ground. After completing the
cut, wait for the saw chain to stop before you move
the chain saw. Always stop the motor before moving
from tree to tree.
Before any work on the machine itself, pull
the mains plug from the socket.
Note: To ensure long and reliable service, carry out
the following maintenance regularly.
Regularly check for obvious defects such as loose,
dislodged or damaged chain and chain bar, loose
fixings and worn or damaged components.
Care has to be taken that the chain is loosened with
the chain tensioning ring 13 before disassembly of
the chain. Forgetting to loosen can damage the
SDS mechanism.
Check that covers and guards are undamaged and
correctly fitted. Carry out necessary maintenance or
repairs before using the chain saw.
If the chain saw should happen to fail despite the
care taken in manufacturing and testing, repair
should be carried out by an authorized customer
service agent.
Before returning, ensure all oil in the oil tank has
been emptied by removing the sieve during emp-
tying. Replace sieve.
For all correspondence and spare parts orders, al-
ways include the 10-digit part number (TYP) from
the nameplate of the machine!
F016 L70 532 - Buch Seite 8 Freitag, 18. April 2008 9:07 09
25 • F016 L70 532 • 08.04
Page: 25
English - 9
Fit the chain and chain bar as described in “Assem-
bly and Tensioning Chain”.
The circular groove of the chain bar will wear partic-
ularly on the lower edge with time. When replacing
the chain turn the chain bar 180° to allow even wear,
thus extending chain bar life.
Reverse the chain tensioning catch 16 by removing
the screws and refitting it on the opposited side.
Check drive sprocket 21. If it is worn out or damaged
due to strain, have it exchanged by an authorized
Bosch service agent.
Have your chain sharpened professionally at your
Bosch approved service agent or sharpen the chain
yourself using the Bosch sharpening kit or a Dremel
power tool with the appropriate grinder (1453), both
available at your Bosch approved service agent. Fol-
low the sharpening instructions supplied with the
sharpening kit.
Proper functioning of the automatic oiler can be
checked by running the chain saw and pointing the
tip of the chain bar towards a piece of cardboard or
paper on the ground. Caution: Do not touch the
ground with the chain. Ensure safety clearance of
20 cm. If an increasing oil pattern developes, the au-
tomatic oiler is operating fine. If there is no oil pat-
tern, despite a full oil reservoir, see “Fault Finding” or
contact your Bosch approved service agent.
AKE 35-19 PRO ......................................... F 016 800 239
AKE 40-19 PRO ......................................... F 016 800 240
Chain bar
AKE 35-19 PRO ......................................... F 016 800 241
AKE 40-19 PRO ......................................... F 016 800 242
Chain sharpening/cleaning kit............. F 016 800 263
Chain oil 1 litre.............................................. 2 607 000 181
Chain oil 5 litre............................................. F 016 800 111
Additional accessories
Gloves .............................................................. 2 607 000 134
Protective goggles..................................... F 016 800 178
SNR 19 ear protectors
(sounding proofing level 19 dB (A)) ... 2 607 990 042
SNR 24 ear protectors
(sounding proofing level 24 dB (A)) ... 2 607 990 043
Clean the moulded plastic housing of the chain saw
using a soft brush and clean cloth. Do not use water,
solvents or polishes. Remove all debris, especially
from the motor cooling vents 27.
Remove and brush clean the cover plate 15, chain
and chain bar after 1 to 3 hours of use.
Clean the area under the cover plate 15, the drive
sprocket 21 and chain bar assembly using a soft
brush. Clean oil outlet 19 with a clean cloth.
If the chain tensioning mechanism becomes dif-
ficult to operate, dismantle the protective lid 29 from
inside the cover plate 15. Turn locking knob 14 and
red tensioning ring 13 against each other, so that
debris is loosened from the mechanism and can be
discarded. Carefully knock out debris. If mechanism
is heavily clogged, use a soft brush or compressed
air for cleaning. Do not use tools of any kind.
If the chain saw is to be stored for a longer period of
time, clean chain and chain bar.
Store in a secure, dry place out of the reach of chil-
dren. Do not place other objects on the chain saw.
To prevent leakage ensure machine is left in a hori-
zontal position (oil filler cap 4 uppermost).
When storing machine in original packaging the oil
tank must be completely emptied.
Replacing/Changing Chain
and Chain Bar
Sharpening Chain
Checking the Automatic Oiler
A Accessories
F016 L70 532 - Buch Seite 9 Freitag, 18. April 2008 9:07 09
26 • F016 L70 532 • 08.04
Page: 26
English - 10
The following table gives checks and actions that you can perform if your machine does not operate correctly.
If these do not identify/remedy the problem, contact your service agent.
Warning: Switch off and remove plug from mains before investigating fault.
Fault Finding
Symptom Possible Cause Remedy
Chain saw fails to
Kickback brake is activated
No power
Mains socket faulty
Extension cord damaged
Fuse faulty
Pull hand guard 5 back in position ➊
so that the red dot is covered
Check power
Use another socket
Check cord, replace
Replace fuse
Chain saw operates
Extension cord damaged
Loose connection
Internal wiring defective
On/Off switch defective
Check cord, replace
Contact service agent
Contact service agent
Contact service agent
Dry chain No oil in reservoir
Vent in oil filler cap clogged
Oil passage clogged
Refill oil
Clean cap
Clean oil passage outlet
Kickback Brake/Run
Down Brake
Brake does not stop chain Contact service agent
Chain/chain bar over-
No oil in reservoir
Vent in oil filler cap clogged
Oil passage clogged
Chain is over tensioned
Dull chain
Refill oil
Clean cap
Clean oil passage outlet
Adjust chain tension
Sharpen chain or replace
Chain saw rips, vibrates,
does not saw properly
Chain tension too loose
Dull chain
Chain worn out
Chain teeth are facing in the wrong
Adjust chain tension
Sharpen chain or replace
Replace chain
Reassemble with chain in correct
F016 L70 532 - Buch Seite 10 Freitag, 18. April 2008 9:07 09
27 • F016 L70 532 • 08.04
Page: 27
English - 11
Power tools, accessories and packaging should be
sorted for environmentally-friendly recycling.
Only for EC countries:
Do not dispose of power tools into
household waste!
According to the European Directive
2002/96/EC on waste electrical and
electronic equipment and its incorpo-
ration into national law, power tools
that are no longer suitable for use must be sepa-
rately collected and sent for recovery in an environ-
mentally-friendly manner.
Exploded views and information on spare parts
can be found under:
Great Britain
Robert Bosch Ltd. (B.S.C.)
P.O. Box 98
Broadwater Park
North Orbital Road
Middlesex UB 9 5HJ
✆ Service................................ +44 (0) 18 95 / 83 87 82
Fax Service ............................... +44 (0) 18 95 / 83 87 89
✆ Advice line......................... +44 (0) 18 95 / 83 87 91
Fax Advice................................. +44 (0) 18 95 / 83 87 93
Beaver Distribution Ltd.
Greenhills Road
Tallaght-Dublin 24
✆ Service..................................... +353 (0)1 / 45 15 211
Fax ..................................................... +353 (0)1 / 45 17 127
Robert Bosch (SEA.) Pte. Ltd.
No. 8a, Jalan 13/6
Selangor Darul Ehsan
Petaling Jaya 46200
✆ ............................................................. +60 3 79 58 30 00
Fax (EW Dept.) ................................... +60 3 79 58 38 38
Robert Bosch Australia Ltd.
1555 Centre Road
P.O. Box 66 Clayton
3168 Clayton/Victoria
✆ .................................................. +61 (0)1 / 800 804 777
Fax .................................................. +61 (0)1 / 800 819 520
New Zealand
Robert Bosch Limited
14-16 Constellation Drive
Mairangi Bay
New Zealand
✆ ........................................................ +64 (0)9 / 47 86 158
Fax ........................................................ +64 (0)9 / 47 82 914
Measured values determined according to
2000/14/EC (1 m distance away) and DIN 45 635.
Typically the A-weighted noise levels of the product
are: sound pressure level: 93 dB (A); sound power
level: 104 dB (A).
Wear hearing protection!
The typical hand-arm vibration is 8 m/s2.
We declare under our sole responsibility that this
product is in conformity with the following standards
or standardization documents: EN 50 144 according
to the provisions of the directives 89/336/EEC,
98/37/EC, 2000/14/EC.
EC Type Certification No. 2079325.01 CE by noti-
fied testing agency No. 0344.
2000/14/EC: The guaranteed sound power level
LWA is lower than 105 dB (A). Conformity assess-
ment procedure according to Annex V.
Leinfelden, 01.09.2005.
Dr. Egbert Schneider Dr. Eckerhard Strötgen
Senior Vice President Head of Product
Engineering Certification
Robert Bosch GmbH, Power Tools Division
Subject to change without notice
Declaration of Conformity
F016 L70 532 - Buch Seite 11 Freitag, 18. April 2008 9:07 09
28 • F016 L70 532 • 08.04

Question & answers

There are no questions about the Bosch AKE 40-19 PRO yet.

Ask a question about the Bosch AKE 40-19 PRO

Have a question about the Bosch AKE 40-19 PRO but cannot find the answer in the user manual? Perhaps the users of can help you answer your question. By filling in the form below, your question will appear below the manual of the Bosch AKE 40-19 PRO. Please make sure that you describe your difficulty with the Bosch AKE 40-19 PRO as precisely as you can. The more precies your question is, the higher the chances of quickly receiving an answer from another user. You will automatically be sent an e-mail to inform you when someone has reacted to your question.