Dolmar PS-34 User manual

1
Instruction Manual
Important:
Read this instruction manual carefully before putting the chain saw into operation and strictly observe
the safety regulations!
Keep this Instruction Manual!
http://www.dolmar.com
PS-34
PS-45

2
Table of contents Page
Packing ................................................................................2
Delivery inventory ..............................................................3
Symbols ..............................................................................3
SAFETY PRECAUTIONS
General precautions ....................................................... 4
Protective equipment ......................................................4
Fuels / Refuelling ............................................................5
Putting into operation ......................................................5
Kickback .........................................................................6
Working behavior/Method of working ...........................6-7
Transport and storage .....................................................8
Maintenance ...................................................................8
First aid ..........................................................................8
Technical data .....................................................................9
Denomination of components ...........................................9
PUTTING INTO OPERATION
Mounting the guide bar and saw chain .................... 10-11
Tightening the saw chain .............................................. 11
Chain brake .................................................................. 12
Fuels ........................................................................13-14
Refuelling ......................................................................14
Adjusting the chain lubrication ......................................15
Starting the engine ........................................................ 16
Cold start .....................................................................16
Warm start ....................................................................16
Stopping the engine....................................................... 16
Checking the chain brake .............................................17
Set idle speed .................................................................17
MAINTENANCE
Sharpening the saw chain .......................................18-19
Cleaning the brake band and sprocket interior .............20
Cleaning the guide bar, lubricating the sprocket nose ..20
Replacing the saw chain ...............................................21
Replacing the suction head .......................................... 21
Cleaning the air Þlter .....................................................21
Replacing the spark plug ..............................................22
Checking the ignition spark ........................................... 22
Instructions for periodic maintenance ...........................23
Service, spare parts and guarantee ..........................23-24
Troubleshooting ...............................................................24
Extract from spare parts list ...........................................25
Accessories ..................................................................25
Conformity Declaration ....................................................27
Thank you for purchasing a DOLMAR product!
Congratulations on choosing a DOLMAR chain saw! We are
conÞdent that you will be satisÞed with this modern piece of
equipment. As the world’s oldest manufacturer of chain saws
- we got our start in 1927 - we have the longest experience in
the industry. This experience shows in every detail of every
DOLMAR chain saw.
The PS-34, PS-45 are very handy and robust chain saws with
a new Design.
Theautomaticchainlubricationandmaintenance-freeelectronic
ignition ensure trouble-free operation, while the hand-saving
anti-vibration system and ergonomic grips and controls make
work easier, safer, and less tiring for the user.
The PS-34, chain saws are equipped with the latest safety
features and meet all international standards. These features
include: Hand guards on both handles, grip throttle lever lock,
chain catch, safety saw chain, and chain brake. The chain
brake can be actuated manually, and is also inertia-actuated
automatically in case of kickback.
The following industrial property rights apply: DE 19722629.
In order to ensure the proper functioning and performance
of your new chain saw, and to safeguard your own personal
safety, it is imperative that you read this instruction manual
thoroughly before operation. Be especially careful to ob-
serve all safety precautions! Failure to do so can result in
serious injury to the operator and/or bystanders!
Packing
The DOLMAR chain saw will be delivered in a protective card-
board box to prevent transport damage.
Cardboardisabasicrawmaterialandisconsequentlyreuseable
or suitable for recycling (waste paper recycling).
Benzin-Motorsäge
Chain Saw
Tronçonneuse à essence
Motosierra a gasolina

3
Delivery inventory
1. Chain saw
2. Guide bar
3. Saw chain
4. Chain protection cover
5. Assembly tool
6. Instruction manual (not shown) In case one of the parts listed should not be included in the
delivery inventory, please consult your sales agent.
Symbols
You will note the following symbols on the chain saw and when studying this instruction manual:
Read the instruction manual and
follow all warnings and safety
instructions!
Particular care and caution!
Forbidden!
Wear protective helmet,
eye and ear protection!
Wear protective gloves!
No smoking!
No open Þre!
Combination Start/Stop (I/O)
switch, choke
Direction of chain travel
Stop engine!
Start the engine
Caution, kickback!
Chain brake
Fuel and oil mixture
Chain oil Þll/oil pump
First aid
Recycling
Sign CE
1
4
5
32

4
1
4
3
2
1
2
3
4
56
7
SAFETY PRECAUTIONS
Intended use
Power chain saws
Thispowerchainsawmaybeused only for sawing woodoutofdoors.
It is intended for the followung uses depending on its class:
- Professional and mid-class: Use on small, medium and large
trees: felling, limb removal, cutting to length, thinning.
- Hobbyklasse: Occasional use on small trees, fruit-tree care,
felling, limb removal, cutting to length.
Unauthorised users:
Persons who are not familiar with the Instruction Manual, children,
young people, and persons under the inßuence of drugs, alcohol
or medication must not use this saw.
General precautions
- Toensurecorrectoperation the user has to readthisinstruc-
tion manual to make himself familiar with the characteristics
of the chain saw. Users insufÞciently informed will endanger
themselves as well as others due to improper handling.
- It is recommended to lend the chain saw only to people who
are experienced in working with chain saws. Always hand over
the instruction manual.
- Firstusersshouldaskthedealerforbasicinstructionstobecome
familiarized with the characteristics of engine powered sawing
or even attend a recognized course of instruction.
- Children and young persons aged under 18 years must not be
allowed to operate the chain saw. Persons over the age of 16
years may, however, use the chain saw for the purpose of being
trained as long as they are under the supervision of a qualiÞed
trainer.
- Use chain saws always with the utmost care and attention.
- Operate the chain saw only if you are in good physical condition.
If you are tired, your attention will be reduced. Be especially
careful at the end of a working day. Perform all work calmly and
carefully. The user has to accept liability for others.
- Never use the chain saw after having consumed alcohol, drugs
or medication.
- A Þre extinguisher must be available in the immediate vicinity
when working in easily inßammable vegetation or when it has
not rained for a long time (danger of Þre).
Protective equipment
- In order to avoid head, eye, hand or foot injuries as well as
to protect your hearing the following protective equipment
must be used during operation of the chain saw:
- The kind of clothing should be appropriate, i. e. it should be
tight-Þtting but not be a hindrance. Do not wear jewellery
or clothing which could become entangled with bushes or
shrubs. If you have long hair, always wear a hairnet!
- It is necessary to wear a protective helmet whenever working
with the chain saw. The protective helmet (1) is to be checked
in regular intervals for damage and is to be replaced after 5
years at the latest. Use only approved protective helmets.
- The face shield (2) of the protective helmet (or the goggles)
protects against sawdust and wood chips. During operation of
the chain saw always wear a goggle or a face shield to prevent
eye injuries.
- Wear adequate noise protection equipment (ear muffs (3),
ear plugs, etc.). Octave brand analysis upon request.
- The safety jacket (4) is provided with special signal-coloured
shoulder straps and is comfortable and easy to care for.
- The protective brace and bib overall (5) is made of a nylon
fabric with 22 layers and protects against cuts. We strongly
recommend its use.
- Protective gloves (6) made of thick leather are part of the
prescribed equipment and must always be worn during
operation of the chain saw.
- During operation of the chain saw safety shoes or safety
boots (7) Þtted with anti skid sole, steel toe caps and pro-
tection for the leg must always to be worn. Safety shoes
equipped with a protective layer provide protection against
cuts and ensure a secure footing.

5
6
5
7
9
8
Fuels / Refuelling
- Stop the engine before refuelling the chain saw.
- Do not smoke or work near open Þres (5).
- Let the engine cool down before refuelling.
- Fuels can contain substances similar to solvents. Eyes and skin
should not come in contact with mineral oil products.Always wear
protective gloves when refuelling. Frequently clean and change
protective clothes. Do not breathe in fuel vapors. Inhalation of fuel
vapours can be hazardous to your health.
- Do not spill fuel or chain oil. When you have spilt fuel or oil im-
mediately clean the chain saw. Fuel should not come in contact
with clothes. If your clothes have come in contact with fuel, change
them ot once.
- Ensure that no fuel or chain oil oozes into the soil (environmental
protection). Use an appropriate base.
- Refuelling is not allowed in closed rooms. Fuel vapors will ac-
cumulate near the ßoor (explosion hazard).
- Ensure to Þrmly tighten the screw caps of the fuel and oil tanks.
- Change the place before starting the engine (at least 3 m from
the place of refuelling) (6).
- Fuel cannot be stored for an unlimited period of time. Buy only as
much as will be consumed in the near future.
- Use only approved and marked containers for the transport and
storage of fuel and chain oil. Ensure children have no access to
fuel or chain oil.
Putting into operation
- Do not work on your own. There must be someone around
in case of an emergency (within shouting distance).
- Ensure that there are no children or other people within the work-
ing area. Pay attention to any animals in the working area, as well
(7).
- Before starting work the chain saw must be checked for
perfect function and operating safety according to the pre-
scriptions.
Checkespeciallythefunction of thechainbrake,thecorrect mount-
ing of the guide bar, the correct sharpening and tightening of the
chain, the Þrm mounting of the sprocket guard, the easy motion
of the throttle lever and the function of the throttle lever lock, the
cleanliness and dryness of the handles, and the function of the
ON/OFF switch.
- Start the chain saw only after complete assembly and inspection.
Operation of the device is only permitted after all the appropriate
accessories are attached!
- Before starting the chain saw ensure that you have a safe foot-
ing.
- Put the chain saw into operation only as described in this instruc-
tion manual (8). Other starting methods are not allowed.
- When starting the chain saw it must be well supported and se-
curely held. The guide bar and chain must not be in contact with
any object.
- When working with the chain saw always hold it with both
hands. Take the back handle with the right hand and the tubular
handle with the lefthand. Holdthe handlestightlywith yourthumbs
facing your Þngers.
- CAUTION: When releasing the throttle lever the chain will
keep on running for a short period of time (free-wheeling).
- Continuously ensure that you have a safe footing.
- Hold the chain saw such that you will not breathe in the exhaust
gas. Do not work in closed rooms (danger of poisoning).
- Switch off the chain saw immediately if you observe any
changes in its operating behavior.
- The engine must be switched off before checking the chain
tension,tighteningthechain,replacing it orclearingmalfunc-
tions (9).
- Whenthesawingdevice is hitbystones,nailsorother hard objects,
switch off the engine immediately and check the sawing device.
- When stopping work or leaving the working place switch off the
chain saw (9) and put it down such that nobody is endangered.
- Do not put the overheated power chain saw in dry grass or on any
inßammable objects. The mufßer is very hot (danger of Þre).
- CAUTION: Oil dropping from the chain or guide bar after having
stopped the saw chain will pollute the soil. Always use an appro-
priate base.
● Maintenance ● Stopping work
● Refuelling ● Transport
● Sharpening the chain ● Putting out of function
3 meters

6
Kickback
- When working with the chain saw dangerous kickbacks may
occur.
- Kickback occurs when the upper part of the end of the guide
bar inadvertently touches wood or other hard objects (10).
- This causes the saw to be thrown back toward the user with
great force and out of control. Risk of injury!
In order to prevent kickback, follow these rules:
- Only specially-trained persons should perform plunge cuts, i.e.,
piercing timber or wood with the tip of the saw!
- Always observe the end of the guide bar. Be careful when
continuing an already started cut.
- When starting to cut the chain must be running.
- Ensurethatthechainisalwayssharpenedcorrectly.Payspecial
attention to the height of the depth limiter.
- Never cut several branches at the same time. When cutting a
branch ensure that no other branch is touched.
- When crosscutting a trunk be aware of the trunks next to it.
Working behavior/Method of working
- Only use the chain saw during good light and visibility periods.
Be aware of slippery or wet areas, and of ice and snow (risk of
slipping). The risk of slipping is extremely high when working
on recently peeled wood (bark).
- Never work on unstable surfaces. Make sure that there are no
obstacles in the working area, risk of stumbling. Always ensure
that you have a safe footing.
- Never saw above your shoulder height (11).
- Never saw while standing on a ladder (11).
- Never climb up into trees to perform sawing with the chain
saw.
- Do not work leaning too far over.
- Guide the chain saw in such a way that no part of your body is
within the elongated swivelling range of the saw (12).
- Use the chain saw for sawing wood only.
- Avoid touching the ground with the chain saw while it is still
running.
- Never use the chain saw for lifting up or removing pieces of
wood or other objects.
- Remove foreign objects such as sand, stones and nails found
within the working area. Foreign objects may damage the saw-
ing device and can cause dangerous kickback.
- When sawing precut timber use a safe support (sawing jack,
13). Do not steady the workpiece with your foot, and do not
allow anyone else to hold or steady it.
- Secure round pieces against rotation.
-For cutting down trees or performing crosscuts the spike
bar (13, Z) must be applied to the wood to be cut.
- Before performing a crosscut Þrmly apply the spike bar to the
timber, only then can the timber be cut with the chain running.
For this the chain saw is lifted at the back handle and guided
with the tubular handle. The spike bar serves as a centre of
rotation. Continue by slightly pressing down the tubular handle
and simultaneously pulling back the chain saw. Apply the spike
bar a little bit deeper and once again lift the back handle.
- When the timber must be pierced for cutting or longitudi-
nal cuts are to be performed it is urgently recommended
to have this carried out by specially trained persons only
(high risk of kickback).
- Do longitudinal - lengthwise - cuts at the lowest possible
angle (14). Be very careful when doing this type of cut, as the
spike bar cannot grip.
- The saw must be running whenever you remove the chain saw
from the wood.
- Whenperformingseveralcutsthethrottlelevermust be released
in between.
10
12
13
14
11
Z

7
- Be careful when cutting splintery wood. Cut pieces of wood
may be pulled along (risk of injuries).
- When cutting with the upper edge of the guide bar, the chain
saw may be pushed in the direction of the user if the chain
gets clamped. For this reason use the lower edge of the bar
whenever possible. The chain saw will then be pushed away
from you (15).
- If the timber is under tension (16), Þrst cut the pressure side
(A). Then the crosscut can be performed on the tension side
(B). Thus clamping of the guide bar can be avoided.
CAUTION: People felling trees or cutting of branches must
be specially trained. High risk of injuries!
- When cutting of branches, the chain saw should be supported
on the trunk. Do not use the end of the bar for cutting (risk of
kickback).
- Be aware of branches under tension. Do not cut free branches
from below.
- Never perform detensioning cuts while standing on the trunk.
- Before cutting down a tree ensure that
a) only those people are within the working area which are
actually involved in cutting down the tree.
b) every worker involved can withdraw without stumbling (the
people should withdraw backwards in a diagonal line, i. e.
at a degree of 45°).
c) the bottom part of the trunk is free from foreign objects,
underbrush and branches. Make sure to have a safe footing
(risk of stumbling).
d) the next working place is at least 2 1/2 tree lengths away
(17). Before cutting down the tree check the direction of fall
and make sure that there are neither people nor objects
within a distance of 2 1/2 tree lengths.
-Judging the tree:
Direction of hanging - loose or dry branches - height of the tree
- natural overhang - is the tree rotten?
- Take into account the direction and speed of the wind. If strong
gusts are occurring, do not do any felling.
-Cutting the roots:
Start with the strongest root. First do the vertical and then the
horizontal cut.
-Notching the trunk (18, A):
The notch determines the direction of fall and guides the tree.
The trunk is notched perpendicular to the direction of fall and
penetrates 1/3 -1/5 of the trunk diameter. Perform the cut near
the ground.
- When correcting the cut, always do so over the whole width of
the notch.
- Cut down the tree (19, B) above the bottom edge of the notch
(D). The cut must be exactly horizontal. The distance between
both cuts must be approx. 1/10 of the trunk diameter.
- The material between both cuts (C) serves as a hinge. Never
cut it through, otherwise the tree will fall without any control.
Insert felling wedges in time.
- Secure the cut only with wedges made of plastic or aluminium.
Do not use iron wedges. If the saw hits an iron wedge the chain
can be seriously damaged or torn.
- When cutting down a tree always stay sidewards of the falling
tree.
- When withdrawing after having performed the cut, be alert for
falling branches.
- When working on sloping ground the user of the chain saw
must stay above or sidewards of the trunk to be cut or the tree
already cut down.
- Be alert for trunks which may roll towards you.
15
16
17
18
19
45o
2 1/2
= cutting down area
45o

8
SERVICE
Transport and storage
-When changing your location during work switch off the
chain saw and actuate the chain brake in order to prevent
an inadvertent start of the chain.
-Never carry or transport the chain saw with the chain run-
ning.
- When transporting the chain saw over long distances the guide
bar protection cover (delivered with the chain saw) must be
applied.
- Carry the chain saw with the tubular handle. The guide bar
points backwards (20).Avoid coming in contact with the mufßer
(danger of burns).
- Ensure safe positioning of the chain saw during car trans-
portation to avoid fuel or chain oil leakage.
- Store the chain saw safely in a dry place. It must not be stored
outdoors. Keep the chain saw out of reach of children.
- Before storing the chain saw over a long period of time or ship-
ping it the fuel and oil tanks must be completely emptied.
Maintenance
- Before performing maintenance work switch off the chain
saw (21) and pull out the plug cap.
- Before starting work always check the operating safety of the
chain saw, in particular the function of the chain brake. Make
sure that the chain is always sharpened and tightened cor-
rectly (22).
- Operate the chain saw only at a low noise and emission level.
For this ensure the carburetor is adjusted correctly.
- Regularly clean the chain saw.
- Regularly check the tank cap for tightness.
Observe the accident prevention instructions issued by
trade associations and insurance companies. Do not
perform any modiÞcations on the chain saw. You will put
your safety at risk.
Perform only the maintenance and repair works described in
the instruction manual. All other work must be carried out by
DOLMAR Service.
Use only original DOLMAR spare parts and accessories.
Using spare parts other than original DOLMAR parts or ac-
cesories and guide bar/chain combinations or lengths which
are not approved bring a high risk of accidents. We cannot
accept any responsibility for accidents and damage resulting
from using sawing devices or accesories which have not been
approved.
First aid
For the event of a possible accident, please make sure that a
Þrstaidkitisalways immediately available close by.Immediately
replace any items used from the Þrst aid box.
When calling for help, give the following information:
- Place of the accident
- What happened
- Number of injured people
- Kind of injuries
- Your name!
NOTE
Individuals with poor circulation who are exposed to excessive
vibration may experience injury to blood vessels or the nervous
system.
Vibration may cause the following symptoms to occur in the Þn-
gers, hands or wrists: ”Falling asleep” (numbness), tingling, pain,
stabbing sensation, alteration of skin colour or of the skin. If any
of these symptoms occur, see a physician!
20
21
22
23
24

9
Stroke volume cm3 33 45,1
Bore mm 37 43
Stroke mm 31
Max. power at speed kW / 1/min 1,3 / 9.000 1,7 / 9.000
Max. torque at speed Nm / 1/min 1,7 / 6.500 2,4 / 6.500
Idling speed / Max. engine speed with guide bar and chain 1/min 2.800 / 12.200 2.600 / 12.600
Coupling speed 1/min 3.900
Sound pressure level LpA av at the workplace per ISO 22868 1) dB (A) 98,5 99,9
Sound power level LwA av per ISO 22868 1) dB (A) 105 109,6
Vibration acceleration ah av per ISO 22867 1)
- Tubular handle m/s2 5 6,1
- Rear handle m/s2 7 9,1
Carburetor (diaphragm carburetor) Type ZAMA
Ignition system Type PHELON
Spark plug Type NGK BPMR 7A
Electrode gap mm 0,5
or spark plug Type
Fuel consumption at max. load per ISO 7293 kg/h 0,71 0,94
SpeciÞc consumption at max. load per ISO 7293 g/kWh 550 580
Fuel tank capacity l 0,37
Chain oil tank capacity I 0,25
Mixture ratio (fuel/two-stroke oil)
- when using DOLMAR oil 50 : 1
- when using Aspen Alkylat (two-stroke fuel) 50 : 1 (2%)
- when using other oils 40 : 1 (quality grade: JASO FC or ISO EGD)
Chain brake engages manually or in case of kickback
Chain speed 2) m/s 17,1
Sprocket pitch inch 3/8
Number of teeth Z 6
Chain type - see the Extract from the spare-parts list 092
Pitch / Driving element strength inch 3/8 / .050
Guide bar, length of a cut cm 35, 40
Guide-bar type - see the Extract from the spare-parts list
Weight (fuel tank empty, without chain and guide bar) kg 4,7 4,75
1) Figures derived in equal part from idle, full-load, and top-speed operation.
2) At max. power
21
23
22
24 25
3
4
1110 12
13 14 15
9
5
21
67
1617181920
8
Denomination of components
1Handle
2 Filter cover
3 Mufßer
4 Spike bar (Toothed stop)
5 Retaining nut
6 Chain catch
7Sprocket guard
8 Adjusting screws for carburetor
9Hand guard (release for chain brake)
10 Starter grip
11 Fuel pump (Primer)
12 Combination Start/Stop (I/O) switch, choke
13 Stop knob for halfway throttle
14 Throttle lever
15 Safety locking button
16 Rear hand guard
17 Fuel tank cap
18 Fuel tank Þll-level window
19 Fan housing with starting assembly
20 IdentiÞcation plate
21 Oil tank cap
22 Oil tank Þll-level window
23 Tubular handle
24 Guide bar
25 Chain
IdentiÞcation plate (20)
Indicate when ordering spare parts
DOLMAR GmbH, 22045 Hamburg, Germany
PS-34 2002 123456
036.100.000 Typ: 036
Serial number
Year of manufacture
Technical data PS-34 PS-45

10
1
2
3
45
Position the guide bar (6). Make sure that the pin (7) of the chain
tightener is in the hole on the guide bar.
Turn the chain adjusting screw (4) to the left (counterclockwise)
until the pin (5) is at the left stop.
Mounting the guide bar and saw chain
Use the universal wrench delivered with the chain saw for the
following work.
Put the chain saw on a stable surface and carry out the following
steps for mounting the guide bar and chain:
Release the chain brake by pulling the hand guard (1) in direc-
tion of arrow.
Unscrew retaining nuts (2).
Pull off the sprocket guard (3).
C
D
PUTTING INTO OPERATION
CAUTION:
Before doing any work on the guide bar or chain, always
switch off the engine and pull the plug cap off the spark
plug (see „Replacing the spark plug“). Always wear pro-
tective gloves!
CAUTION:
Start the chain saw only after having assembled it com-
pletely and inspected!
67
B
A

11
2
3 813
2
8 12
8 10
11
9
Pull the chain (8) around the sprocket nose (12) of the guide
bar in the direction of the arrow.
Lift the chain (8) over the sprocket (9). Using your right hand,
guide the chain into the top guide groove on the guide bar (10).
Note that the cutting edges along the top of the chain must point
in the direction of the arrow (11)!
G
H
Tightening the saw chain
Turn the chain tightener (C/4) to the right (clockwise)
until the chain engages the guide groove of the bottom side of
the bar (see circle).
Slightly lift the end of the guide bar and turn the chain adjusting
screw (C/4) to the right (clockwise) until the chain rests against
the bottom side of the guide bar.
While still holding up the guide bar, tighten the retaining nut s(2)
with the universal wrench.
Replace the sprocket guard (3), putting the chain (8) over the
chain catcher (13).
Manually tighten the retaining nuts (2).
F
E

12
2
Checking the chain tension
The tension of the chain is correct if the chain rests against
the bottom side of the guide bar and can still be easily turned
by hand.
While doing so the chain brake must be released.
Check the chain tension frequently - new chains tend to get
longer during use!
When checking the chain tension the engine must be switched
off.
NOTE:
It is recommended to use 2-3 chains alternatively.
In order to guarantee uniform wear of the guide bar the bar
should be turned over whenever replacing the chain.
Tightening the saw chain
Turn the retaining nuts (2) approximately one turn with
the universal wrench. Slightly lift the end of the guide bar
and turn the chain adjusting screw to the right (clockwise) until
the chain rests against the bottom side of the guide bar.
While still holding up the guide bar, tighten the retaining nuts
(2) with the universal wrench.
A
12
1
Engaging the chain brake (braking)
If the kickback is strong enough the sudden acceleration of
the guide bar combined with the inertia of the hand guard (1)
will automatically actuate the chain brake.
To engage the chain brake manually, simply push the hand
guard (1) forward (towards the tip of the saw) with your left
hand (arrow 1).
Releasing the chain brake
Pull the hand guard (1) towards you (arrow 2) until you feel it
catch. The brake is now released.
C
Chain brake
ThePS-34,PS-45 comeswithaninertiachainbrakeasstandard
equipment. If kickback occurs due to contact of the guide-bar
tip with wood (see SAFETY PRECAUTIONS, page 6), the
chain brake will stop the chain through inertia if the kickback
is sufÞciently strong.
The chain will stop within a fraction of a second.
The chain brake is installed to block the saw chain before
starting it and to stop it immediately in case of an emer-
gency.
IMPORTANT: NEVER run the saw with the chain brake
activated (except for testing, see “Checking the chain bra-
ke”)! Doing so can very quickly cause extensive engine
damage!
ALWAYS release the chain brake before starting the
work!
B

13
Fuel
CAUTION:
This saw is powered by mineral-oil products (gasoline
(petrol) and oil).
Be especially careful when handling gasoline (petrol).
Avoid all ßame or Þre. Do not smoke (explosion hazard).
Fuel mixture
Theengineofthe chain sawisahigh-efÞciencytwo-stroke engine.
It runs on a mixture of gasoline and two-stroke engine oil.
The engine is designed for unleaded regular gasoline with a
min. octane value of 91 ROZ. In case no such fuel is available,
you can use fuel with a higher octane value. This will not affect
the engine.
In order to obtain an optimum engine output and to protect
your health and the environment use unleaded fuel only.
For lubricating the engine use a two-stroke engine oil (quality
grade: JASO FC or ISO EGD), which is added to the fuel. The
engine has been designed for use of DOLMAR high-perform-
ance two-stroke engine oil and a mixture ratio of only 50:1 to
protect the environment. In addition, a long service life and
reliable operation with a minimum emission of exhaust gases
are ensured. DOLMAR high-performance two-stroke engine oil
is available in the following sizes to suit your individual require-
ments:
1 l order number 980 008 107
Measuring bottle 1 l order number 980 008 112
100 ml order number 980 008 106
If DOLMAR high-performance two-stroke engine oil is not avail-
able, we urgently recommended a mixture ratio of 40:1 with
other two-stroke engine oils, as otherwise optimum operation
of the engine cannot be guaranteed.
Caution: Do not use ready-mixed fuel from petrol
stations.
The correct mixture ratio:
50:1 when using DOLMAR high-performance two-stroke
engine oil, i. e. mix 50 parts gasoline with 1 part oil.
40:1 when using other two-stroke engine oils, i. e. mix 40
parts gasoline with 1 part oil.
NOTE:
For preparing the fuel-oil mixture Þrst mix the entire oil
quantity with half of the fuel required, then add the remain-
ing fuel. Thoroughly shake the mixture before Þlling it into
the chain saw tank.
Gasoline
+
It is not wise to add more engine oil than speciÞed
to ensure safe operation. This will only result in a
higher production of combustion residues which
will pollute the environment and clog the exhaust
channel in the cylinder as well as the mufßer. In
addition, fuel consumption will rise and perform-
ance will decrease.
The Storage of Fuel
Fuels have a limited storage life. Fuel and fuel mixtures
age through evaporation, especially at high tempera-
tures. Aged fuel and fuel mixtures can cause starting
problems and damage the engine.Purchase only that
amount of fuel, which will be consumed over the next
few months. At high temperatures, once fuel has been
mixed it should be used up in 6-8 weeks.
Store fuel only in proper containers, in dry, cool,
secure locations!
AVOID SKIN AND EYE CONTACT
Mineral oil products degrease your skin. If your skin
comes in contact with these substances repeatedly
and for an extended period of time, it will desiccate.
Various skin deseases may result. In addition, allergic
reactions are known to occur.
Eyes can be irritated by contact with oil. If oil comes into
your eyes, immediately wash them with clear water.
If your eyes are still irritated, see a doctor immedi-
ately!
1000 cm3 (1 litre) 20 cm325 cm3
5000 cm3 (5 litres) 100 cm3 125 cm3
10000 cm3 (10 litres) 200 cm3 250 cm3
Chain oil
Use an oil with adhesive additive for lubricating the chain and
guide bar. The adhesive additive prevents the oil from being
ßung off the chain too quickly.
We recommend the use of chain oil which is bio-degradable in
order to protect the environment. The use of bio-degradable oil
may even be required by local regulations.
The chain oil BIOTOP sold by DOLMAR is made of special
vegetable oils and is 100% bio-degradable. BIOTOP has been
granted the „blue angel“ (Blauer Umweltschutz-Engel) for being
particularly environment-friendly (RAL UZ 48).
E
BIOTOP chain oil is available in the following sizes:
1 l order number 980 008 210
5 l order number 980 008 211
20 l order number 980 008 213
Bio-degradable oil is stable only for a limited period of
time. It should be used within 2 years from the date of
manufacture (printed on the container).
50:1 40:1
D

14
A
B
fuel/oil mixturechain oil
Refuelling
FOLLOW THE SAFETY PRECAUTIONS!
Be careful and cautious when handling fuels.
The engine must be switched off!
Thoroughly clean the area around the caps, to prevent dirt
from getting into the fuel or oil tank.
Unscrew the cap and Þll the tank with fuel (fuel/oil mixture) or
chain oil as the case may be. Fill up to the bottom edge of the
Þller neck. Be careful not to spill fuel or chain oil!
Tightly screw on the cap.
Clean screw cap and tank after refuelling.
Lubricating the chain
During operation there must always be sufÞcient chain oil in
the chain-oil tank to provide good chain lubrication. One Þlling
is sufÞcient for about one half-hour of continuous operation.
While working make sure there is enough chain oil in the tank.
If necessary, add oil. The engine must be switched off!
Important note on bio-degradable chain oils:
If you are not planning to use the saw again for an ex-
tended period of time, empty the oil tank and put in a
small amount of regular engine oil (SAE 30), and then
run the saw for a time. This is necessary to ßush out all
remaining bio-degradable oil from the oil tank, oil-feed
system, chain and guide bar, as many such oils tend to
leave sticky residues over time, which can cause damage
to the oil pump or other parts.
The next time you use the saw, Þll the tank with BIOTOP
chain oil again. In case of damage caused by using waste
oil or unappropriate chain oil the product guarantee will be
null and void.
Your salesman will inform you about the use of chain oil.
waste oil
NEVER USE WASTE OIL
Waste oil is very dangerous for the environment.
Waste oil contains high amounts of carcinogenic substances.
Residues in waste oil result in a high degree of wear and tear
at the oil pump and the sawing device.
In case of damage caused by using waste oil or unappropriate
chain oil the product guarantee will be null and void.
Your salesman will inform you about the use of chain oil.
AVOID SKIN AND EYE CONTACT
Mineral oil products degrease your skin. If your skin comes in
contact with these substances repeatedly and for an extended
periodoftime,itwilldesiccate.Various skin deseases may result.
In addition, allergic reactions are known to occur.
Eyes can be irritated by contact with oil. If oil comes into your
eyes, immediately wash them with clear water.
If your eyes are still irritated, see a doctor immediately!

15
1 2
Checking the chain lubrication
Never work with the chain saw withoute sufÞcient chain lubrica-
tion. Otherwise the service life of the chain and guide bar will
be reduced.
Before starting work check the oil level in the tank and the oil
feed.
Check the oil feed rate as described below:
Start the chain saw (see „Starting the engine”).
Hold the running chain saw approx. 15 cm above a trunk
or the ground (use an appropriate base).
If the lubrication is sufÞcient, you will see a light oil trace be-
cause oil will be ßung off the sawing device. Pay attention to the
direction the wind is blowing and avoid unnecessary exposure
to the oil spray!
Note:
After the saw has been turned off it is normal for residual chain
oil to drip from the oil feed system, the guide bar and the chain
for a time. This does not constitute a defect!
Place the saw on a suitable surface.
C
To ensure troublefree operation of the oil pump the oil guide
groove at the crankcase (1) and the oil inlet bore in the guide
bar (2) must be cleaned regularly.
D

16
1
56
2
34
A
Starting the engine
Start the chain saw only after having assembled it com-
pletely and inspected!
Move at least 10 feet (3 m) away from the place where you
fuelled the saw.
Make sure you have a good footing, and place the saw on the
ground in such a way that the chain is not touching anything.
Engage the chain brake (lock).
Hold the tubular handle tightly with one hand and press the
chain saw to the ground.
Steady the rear handle by standing in the hand guard.
B
Cold start:
Prime the fuel pump (5) by pressing it several times until you
can see fuel in the pump.
Move the combination switch (1) up (choke position).
Grasp handle (hand pressure actuates the grip throttle lever
lock (4)).
Push the throttle (3) in all the way and hold it.
Press the throttle lock (2) and release the throttle (3) (the throttle
lock will hold the throttle at half-throttle position).
Slowly pull out the starter cable (6) until you notice resistance
(the piston is positioned before the top dead centre).
Now pull the starter cable with a fast and forceful move-ment
until you hear the Þrst ignition.
CAUTION: Do not pull out the starter cable more than approx.
50 cm, and lead it back by hand.
Whenyouhear the Þrst ignition, put the combination switch
(1) in position „I“ and pull the starter cable again.
As soon as the engine is running, press the throttle (3) to release
the half-throttle lock (2), allowing the engine to idle.
CAUTION: As soon as the engine is started it must be put
in idle to prevent the chain brake from being damaged.
Now release the chain brake.
Warm start:
As described above for cold starting, but without using
the choke position.
Stopping the engine (only for PS-34)
Push the combination switch (1) down to position .
Stopping the engine (only for PS-45)
Press the combination switch (1) down in direction .
NOTE:After being pressed down, the PS-45 combination switch
will revert to the „I“ position again. The engine is switched off,
but can be turned on again without moving the combination
switch.
IMPORTANT: To cut off the ignition current of the PS-45, push
the combination switch all the way down past the resistance
point ( ).

17
Checking the chain brake
Do not work with the chain saw without Þrst checking the
chain brake!
Start the engine as described (make sure you have a good
footing, and place the chain saw on the ground in such a way
that the guide bar is free of contact).
Grasp the tubular handle Þrmly with one hand and hold the grip
with the other.
With the engine running at moderate speed, press the hand
guard (7) in the direction of the arrow with the back of your
hand until the chain brake engages. The chain should stop
immediately.
Immediately release the throttle and release the chain brake.
IMPORTANT: If the chain does not stop immediately when
you test the chain brake, do NOT use the chain saw. Take
the chain saw to a DOLMAR service center.
C
7
D
Adjusting the carburetor
IMPORTANT: Carburetor adjustment may be done only by
a DOLMAR service centre!
Do not undertake adjustments to the adjusting screws (H)
and (L) without a tachometer! Improper adjustment can
lead to engine damage!
The adjusting screws (H) and (L) are factory set almost all the
way out (turned counterclockwise).
A tachometer is necessary to adjust the adjusting screws
(H) and (L), because exceeding the permissible maximum
speed leads to overheating and under-lubrication. This can
damage the engine!
The only user-adjustable setting is the idle adjusting screw
(9). If the blade rotates in idle (without the throttle pressed),
it is absolutely necessary to correct the idle speed before
using the tool!
Do not adjust the idle speed until the machine has been
completely assembled and checked!
Adjust the idle speed only with the engine warm, a clean
air Þlter, and properly installed cutting tool.
Use a screwdriver (blade width 4 mm, part No. 944 340 001)
to adjust the screw.
9
HL
S
SERVICE
Setting the idle speed
Turn out the idle adjusting screw (9) (counterclockwise):
Idle speed drops.
Turn in the idle adjusting screw (9) (clockwise): Idle
speed goes up.
Caution: If after this adjustment the cutting tool still
rotates during idle, do NOT work with the unit! Take it
to a DOLMAR service centre!
Note: Carburetor adjustment is necessary for optimum
engine performance, for safer and more economical
operation.
In order to comply with new emissions legislation, limits
have been placed on the carburetor adjusting screws (H)
and (L). This limitation (to about 180 degrees) prevents an
excessively rich mixture. On some models the (H) screw is
also sealed. This ensures compliance with emissions rules
as well as optimum engine performance and economical
fuel consumption.

18
MAINTENANCE
Sharpening the saw chain
CAUTION: Before doing any work on the guide bar or chain,
always switch off the engine and pull the plug cap off the
spark plug (see „Replacing the spark plug“). Always wear
protective gloves!
The chain needs sharpening when:
The sawdust produced when sawing damp wood looks like
wood ßour.
The chain penetrates the wood only under great pressure.
The cutting edge is visibly damaged.
The saw is pulled to the left or right when sawing. This is caused
by uneven sharpening of the chain.
Important: Sharpen frequently, but without removing too
much metal!
Generally, 2 or 3 strokes of the Þle will be enough.
Have the chain resharpened at a service centre when you have
already sharpened it yourself several times.
A
Proper sharpening:
CAUTION: Use only chains and guide bars designed for
this saw (see the Extract from the spare-parts list)!
All cutters must be of the same length (dimension a). Cutters
with different lengths result in rough running of the chain and
can cause cracks in the chain.
Minimum cutter length is 3 mm (0.11“). Do not resharpen the
chain when the minimum cutter length has been reached; at
this point, the chain must be replaced (see the Extract from the
spare-parts list and „Replacing the chain“).
The depth of the cut is determined by the difference in height
between the depth limiter (round nose) and the cutting edge.
The best results are obtained with a depth-limiter depth of
0.64 mm (.025“).
CAUTION: Excessive depth
increases the risk of kickback!
B
min.
3 mm (0.11”)
0.64 mm
(.025“)
0.64 mm
(.025“)
All cutters must be sharpened to the same angle, 30°. Different
angles result in a roughly, irregularly running chain, increase
wear and tear and cause chain beakage.
The 85° front rake of the cutter results from the cut depth of
the round Þle. If the proper Þle is used in the right manner, the
correct front rake will be obtained automatically.
C

19
D
Files and how to work with them
Sharpen using a special Þle holder with a saw chain round Þle
dia. 4.0 mm. Normal round Þles are not appropriate for this work.
See „Accessories“ for the order number.
The Þle should cut only when pushed forwards (arrow). Lift the
Þle when leading it backwards.
First sharpen the shortest cutter. The length of this cutter is then
the standerd for all other cutters of the chain.
Always guide the Þle horizontally (90°to the guide bar).
E
The Þle holder makes Þle guidance easier. It is marked for the
correct 30° sharpening angle (keep the marks parallel with the
chain when Þling, see illustration) and limits the cut depth to
the correct 4/5 of the Þle diameter. See „Accessories“ for the
order number.
4/5
30°
F
After having sharpened the chain, the height of the depth limiter
must be checked by means of a chain gauge. See „Accessories“
for the order number.
Correct even the smallest excess height (13) with a special
ßat Þle. See „Accessories“ for the order number.
Round off the front of the depth limiter (14).
13
14

20
SERVICE
Cleaning the brake band and sprocket interior
CAUTION: Before doing any work on the guide bar or chain,
always switch off the engine and pull the plug cap off the
spark plug (see „Replacing the spark plug“). Always wear
protective gloves!
CAUTION: Start the chain saw only after having assembled
it completely and inspected!
Remove the sprocket guard (4) (See „PUTTING INTO OP-
ERATION“ Þgs. A and B) and clean the sprocket interior with
a brush.
Turn the chain tightener screw (5) to the left (counterclockwise)
until you feel resistance.
Remove the chain (3) and guide bar (2).
NOTE:
Make sure that no residue or contaminants remain in the oil
guide groove (1) and the chain tightener (6).
For replacing the guide bar, chain, and sprocket see „PUTTING
INTO OPERATION“.
NOTE:
The chain brake is a very important safety device and
like any other component subject to normal wear and
tear.
Regular inspection and maintenance are important for
your own safety and must be done by a DOLMAR service
center.
A
1
2
5 46
3
Cleaning the guide bar, lubricating the sprocket
nose
CAUTION: Protective gloves must be worn.
Regularly inspect the bearing surfaces of the guide bar for
damage, and clean them with a suitable tool.
If the saw is used intensively it will be necessary to lubricate
the return sprocket bearings regularly (once a week). To do this,
Þrst thoroughly clean the 2 mm hole at the tip of the guide bar,
and then press in a small amount of multi-purpose grease.
Multi-purpose grease and grease guns are available as
accessories.
Multi-purpose grease (order no. 944 360 000)
Grease gun (order no. 944 350 000)
B