Dolmar PS-32, PS-32 TLC, PS-32 C, PS-32 C TLC Manual

Introduction

We are confident that you will be satisfied with this modern piece of equipment. The PS-32 are very handy and robust chain saws with a new Design.
The automatic chain lubrication with variable-flow oil pump and maintenance-free electronic 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 Featherlight-Start system lets you start the saw effortlessly with a spring-loaded starting assist. For some countries the saw is also equipped with a catalytic converter. This reduces the amount of pollutants in the exhaust, and meets European Guideline 2002/88/EC.
DOLMAR chain saws PS-32 are equipped with the latest safety features and meet all national and 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 101 32 973, DE 20 2008 006 013, DE 20 2009 013 953, DE 203 19 902, DE 203 01 182, DE 197 22 629, DE 10 2007 039 028, DE 10 2007 038 199.
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 observe all safety precautions! Failure to observe these precautions can lead to severe injury or death!


The ignition system of this equipment produces an electromagnetic field. This field may interfere with some medical devices such as a pacemaker. To reduce the risk of serious or fatal injury, persons with a medical device should consult with their physician and the manufacturer of the device before operating this equipment.

Delivery inventory

1. Chain saw
2. Guide bar
3. Saw chain
4. Chain protection cover
5. Universal wrench
6. Screwdriver for carburetor adjustment
7. 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 notice the following symbols on the saw and in the Instruction Manual:

	Read instruction manual and follow the warning and safety precautions!		kickback!
	Particular care and caution!		Chain brake
	Forbidden!		Fuel and oil mixture
	Wear protective helmet, eye and ear protection!		Carburetor adjustment
	Wear protective gloves!
	No smoking!		Chain oil fill/oil pump
	No open fire!		Saw chain oil adjustment screw
	Stop engine!		First aid
	Start engine
	Combination switch, Choke ON/STOP
	Safety position

SAFETY PRECAUTIONS

Intended use
Power chain saws
This power chain saw may be used only for sawing wood out of doors. 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.
• Hobby class: Occasional use on small trees, fruit-tree care, felling, limb removal, cutting to length.

Unauthorized users:
Persons who are not familiar with the Instruction Manual, children, young people, and persons under the influence of drugs, alcohol or medication must not use this saw. National regulations may restrict the use of the unit!

General precautions

• To ensure correct operation the user has to read this instruction manual (Fig. 2) to make himself familiar with the charac teristics of the chain saw. Users insufficiently 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.
• First users should ask the dealer for basic instructions to become 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 qualified 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.(Fig. 3)
  
• A fire extinguisher must be available in the immediate vicinity when working in easily inflammable vegetation or when it has not rained for a long time (danger of fire).

Protective equipment (Fig. 4 & 5)

• 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-fitting 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 band analysis may be provided upon request.
• The safety jacket (4) is provided with special signalcoloured shoulder straps and is comfortable and easy to care for.
• The protective brace and bib overall (5) is made of a nylon fabric with multiple 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) fitted with anti skid sole, steel toe caps and protection for the leg must always to be worn. Safety shoes equipped with a protective layer provide protection against cuts and ensure a secure footing.
• Sawing dry wood can create dust. Use a suitable dust mask.

Fuels/Refuelling

• Stop the engine before refuelling the chain saw.
• Do not smoke or work near open fires(Fig. 6).
  
• 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 immediately clean the chain saw. Fuel should not come in contact with clothes. If your clothes have come in contact with fuel, change them at 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 accumulate near the floor (explosion hazard).
• Ensure to firmly tighten the screw plugs of the fuel and oil tanks.
• Change the place before starting the engine (at least 3 m from the place of refuelling)(Fig. 7).
  
• 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. Another person must be nearby in case of emergencies (within shouting distance).
• Ensure that there are no children or other people within the working area. Pay attention to any animals in the working area, as well(Fig. 8).
  
• Before starting work the chain saw must be checked for perfect function and operating safety according to the prescriptions.
  Check especially the function of the chain brake, the correct mounting of the guide bar, the correct sharpening and tightening of the chain, the firm 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.
• Put the chain saw only into operation if it is completely assembled. Never use the chain saw when it is not completely assembled.
• Before starting the chain saw ensure that you have a safe footing.
• Put the chain saw into operation only as described in this instruction manual(Fig. 9). Other starting methods are not allowed.
  
• When starting the chain saw it must be well supported and securely 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 left hand. Hold the handles tightly with your thumbs facing your fingers.
• 
  When releasing the throttle lever the chain will keep on running for a short period of time (freewheeling).
• 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, tightening the chain, replacing it or clearing malfunctions (Fig. 10).
  
• When the sawing device is hit by stones, nails or other hard objects, switch off the engine immediately and check the sawing device. If the chain saw is exposed to force, such as through impact or falling, inspect the entire chain saw for proper functioning.
• When stopping work or leaving the working place, switch off the chain saw (Fig. 10) and put it down such that nobody is endangered.
  • Maintenance
  • Stopping work
  • Refuelling
  • Transport
  • Sharpening the chain
  • Putting out of function
    
    Do not put the overheated power chain saw in dry grass or on any inflammable objects. The muffler is very hot (danger of fire).
• 
  Oil dropping from the chain or guide bar after having stopped the saw chain will pollute the soil. Always use an appropriate base.

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(Fig. 11).
  
• 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!
• Never apply the end of the bar when starting to make a cut.
• 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.
• Ensure that the chain is always sharpened correctly. Pay special 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(Fig. 12).
  
• Never saw while standing on a ladder(Fig. 12).
• 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(Fig. 13).
  
• 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 sawing device and can cause dangerous kickback.
• When sawing precut timber use a safe support (sawing jack,Fig. 14). 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 (Fig. 14, Z) must be applied to the wood to be cut.
• Before performing acrosscut firmly 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 longitudinal cuts are to be performed it is urgently recommended to have this carried out by specially trained persons only (high risk of kickback).
• When starting a cut, the blade can slip to the side or jump slightly. This depends on the wood and the condition of the chain.Therefore, always hold the chain saw with both hands.
• Dolongitudinal - lengthwise - cuts at the lowest possible angle (Fig. 15). 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.
• When performing several cuts the throttle lever must be released in between.
• 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(Fig. 16).
  
• If the timber is under tension(Fig. 17), first 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.
  
• At the end of the cut the weight of the chain saw will cause it to swing through, since it is no longer held by the cut. Hold it firmly to control this.
  
  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

1. only those people are within the working area which are actually involved in cutting down the tree.
2. every worker involved can withdraw without stumbling (the people should withdraw backwards in a diagonal line, i. e. at a degree of 45°).
3. the bottom part of the trunk is free from foreign objects, underbrush and branches. Make sure to have a safe footing (risk of stumbling).
4. the next working place is at least 2 1/2 tree lengths away (Fig. 18). 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.
   
   1. = cutting down area

• 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 (Fig. 19, 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 (Fig. 20, 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.

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 running.
• When the saw is hot, do not cover it (with a tarp, blanket, newspaper or the like).
  Let the saw cool down before putting it in a storage case or vehicle. Saws with catalytic converter take longer to cool down!
• When transporting the chain saw over long distances the chain protection cover (delivered with the chain saw) must be applied.
• Carry the chain saw with the tubular handle. The guide bar points backwards (Fig. 21). Avoid coming in contact with the muffler (danger of burns).
  
• Ensure safe positioning of the chain saw during car transportation 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 away from children.
  The chain protection cover should always be put on.
• Before storing the chain saw over a long period of time or shipping it the fuel and oil tanks must be completely emptied.

Maintenance

• Before performing maintenance work switch off the chain saw (Fig. 22) 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 correctly(Fig. 23).
  
• 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 modifications 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 accessories 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 accessories which have not been approved.

First aid
For the event of a possible accident, please make sure that a first aid kit is always immediately available close by.
Immediately replace any items used from the first 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 fingers, 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! To reduce the risk of vibration white finger, keep your hands warm, wear gloves, and make sure the saw chain is sharp.

1. Figures derived in equal part from idling, full-load and racing speed.
2. Figures derived in equal part from full-load and racing speed.
3. Uncertainty (K=).

Denomination of components

1. Handle
2. Cover
3. Hood lock (under the hood cap)
4. Tubular handle
5. Hand guard (release for chain brake)
6. Muffler
7. Spike bar
8. Chain tensioning screw
9. Retaining nuts
10. Chain catcher
11. Sprocket guard
12. Adjusting screw for oil pump (bottom side)
13. Fuel pump (Primer)
14. Identification plate
15. Starter grip
16. Combination switch (Choke / ON / Stop)
17. Throttle lever
18. Safety locking button
19. Rear hand guard
20. Fuel tank cap
21. Adjusting screws for carburetor
22. Fan housing with starting assembly
23. Oil tank cap
24. Chain (Blade)
25. Guide bar
26. Sprocket guard quick tensioner (TLC)

PUTTING INTO OPERATION

Only for models with fastening nuts on the sprocket guard

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!

Start the chain saw only after having assembled it completely and inspected.

Mounting the guide bar and saw chain
(Fig. 25)
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 saw chain: Release the chain brake by pulling the hand guard (1) in direction of arrow.
Unscrew retaining nuts (2).
Pull off the sprocket guard (3).

(Fig. 26)
Turn chain tensioning screw (4) to the left (counter-clockwise) until the pin (5) of the chain tensioner is underneath the threaded pin (6).

(Fig. 27)
Put on the guide bar (7). Make sure that the pin (5) of the chain tensioner engages in the hole in the guide bar.

(Fig. 28)
Lift the chain (9) over the sprocket (8).
Guide the chain from above about halfway into the groove (10) on the guide bar.

Note that the cutting edges along the top of the chain must point in the direction of the arrow!

(Fig. 29)
Pull the chain (9) around the sprocket nose (11) of the guide bar in the direction of the arrow.

(Fig. 30)
Replace the sprocket guard (3).

Lift the saw chain over the chain catcher (12).
Tighten the nuts (2) only hand-tight to begin with.

Tightening the saw chain
(Fig. 31)
Turn the chain tensioning screw (4) to the right (clockwise) until the saw chain catches in the groove on the lower side of the guide bar (see circle).
Slightly lift the end of the guide bar and turn the chain adjusting screw (4) to the right (clockwise) until the chain rests against the bottom side of the guide bar.
While still holding up the tip of the guide bar, tighten the retaining nuts (2) with the universal wrench.

Checking the chain tension

(Fig. 32)
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.

Retightening the saw chain
(Fig. 33)
Loosen the nuts (2) about one turn with the universal wrench.
Raise the tip of the guide bar a little and turn the chain tensioning screw (4) to the right (clockwise) until the saw chain is again up against the bottom edge of the guide bar (see circle).
While keeping the tip of the guide bar raised, tighten the nuts (2) again with the universal wrench.

Only for the QuickSet guide bar

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!

Start the chain saw only after having assembled it completely and inspected.
On QuickSet guide bars the chain is tensioned using a toothed rack in the bar. This simplifies retensioning of the chain. These models do not have a conventional chain tensioner. QuickSet guide bars are identified by this symbol:

Mounting the guide bar and saw chain
(Fig. 34)
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 saw chain: Release the chain brake by pulling the hand guard (1) in direction of arrow.
Unscrew retaining nuts (2).
Pull off the sprocket guard (3).

(Fig. 35)
Put the guide bar (4) on and push it against the sprocket (5).

(Fig. 36)
Lift the chain (6) over the sprocket (5).
Guide the chain from above about halfway into the groove (7) on the guide bar.

Note that the cutting edges along the top of the chain must point in the direction of the arrow!

(Fig. 37)
Pull the chain (6) around the sprocket nose (8) of the guide bar in the direction of the arrow.

(Fig. 38)
Replace the sprocket guard (3).

Lift the saw chain over the chain catcher (9).
Tighten the nuts (2) only hand-tight to begin with.

Tensioning the saw chain
(Fig. 39)
Turn the QuickSet chain tensioner (10) to the right (clockwise) using the combination tool, until the saw chain guide elements engage in the guide groove on the bottom of the guide bar (if necessary, pull the chain into position slightly). Raise the tip of the guide bar slightly and turn the chain tensioner (10) further until the saw chain is flush against the bottom of the guide bar (see circle).
While still holding up the tip of the guide bar, tighten the retaining nuts (2) with the universal wrench.
NOTE: If the guide bar has been turned over, turn the chain tensioner to left (i.e. counter-clockwise) to tighten the chain.

Checking the chain tension

(Fig. 40)
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.

Retensioning the saw chain
(Fig. 39)
Use the combination tool to loosen the fastening nuts (2) about one turn. Raise the tip of the guide bar slightly and turn the QuickSet chain tensioner (10) to the right (clockwise) until the saw chain is again flush against the bottom of the guide bar (see circle).
While still holding up the tip of the guide bar, tighten the retaining nuts (2) with the universal wrench.

Only for models with quick tensioner on sprocket guard (TLC)



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!

Start the chain saw only after having assembled it completely and inspected.

Mounting the guide bar and saw chain
(Fig. 41)
Place the saw on a stable surface and perform the following work steps in order to install the guide bar and saw chain: Release the chain brake by pulling the hand guard (1) in direction of arrow.
Fold up the sprocket guard quick tensioner (2) (see also the illustration on tensioning the saw chain).
Push the sprocket guard quick tensioner in forcefully against the spring tension and slowly turn counter-clockwise, until you feel it engage. Keep pushing, and turn as far as possible counter-clockwise.
Release the sprocket guard quick tensioner again and turn clockwise to bring it back to its original position. Repeat this procedure until the sprocket guard (4) is unscrewed. Remove the sprocket guard (4).

(Fig. 42)
Put the guide bar (5) on and push it against the sprocket (6).

(Fig. 43)
Lift the chain (8) over the sprocket (7).
Guide the chain from above about halfway into the groove (9) on the guide bar.

Note that the cutting edges along the top of the chain must point in the direction of the arrow!

(Fig. 44)
Pull the chain (8) around the sprocket nose (10) of the guide bar in the direction of the arrow.

(Fig. 45)
Align hole on sprocket guard (4) with the pin (11). Turn the chain tensioner (3, see "Tightening the saw chain") to bring the chain tensioner pin (12) into alignment with the hole in the guide bar.
Push the sprocket guard (4) onto the pin (11).

Tightening the saw chain
(Fig. 46)
Simultaneously push in hard on the sprocket guard quick tensioner (2) and turn it clockwise to screw the sprocket guard on, but do not yet tighten it.
Raise the tip of the guide bar slightly and turn the chain tensioner (3) clockwise until the saw chain is flush against the bottom of the guide bar (see circle).
Push the sprocket guard quick tensioner (2) in again and tighten by turning clockwise.

(Fig. 47)
Release the sprocket guard chain tensioner until it turns freely, then fold it in between protective ribs (15) as shown in the illustration.

Checking the chain tension

(Fig. 48)
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.

Retensioning the saw chain
(Fig. 49)
All that is necessary to retension the saw chain is to loosen the quick tensioner (2) slightly as described under "Mounting the guide bar and saw chain".
Tension the chain as already described.

For all models
Chain brake
The PS-32 comes with an inertia chain brake as standard equipment. If kickback occurs due to contact of the guide-bar tip with wood (see SAFETY PRECAUTIONS "Kickback" and Fig. 11), the chain brake will stop the chain through inertia if the kickback is sufficiently 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 emergency.

NEVER run the saw with the chain brake activated (except for testing, see "Checking the chain brake")! Doing so can very quickly cause extensive engine damage!
ALWAYS release the chain brake before starting the work!

(Fig. 50)
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.

Fuel


This saw is powered by mineral-oil products (gasoline and oil).
Be especially careful when handling gasoline. Do not smoke. Keep tool well away from open flames, spark, or fire (explosion hazard).

Fuel mixture
This tool is powered by a high-performance air-cooled two-stroke engine. It runs on a mixture of gasoline and twostroke 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.
To lubricate the engine, use a synthetic oil for two-stroke aircooled engines (quality grade JASO FC or ISO EGD), which has to be added to the fuel. The engine has been designed for use of DOLMAR EXTRA high-performance two-stroke engine oil and a mixture ratio of only 100:1 to protect the environment. In addition, a long service life and reliable operation with a minimum emission of exhaust gases are ensured. DOLMAR EXTRA high-performance two-stroke engine oil is available in the following sizes:

DOLMAR high-performance two-stroke engine oil (50:1) is available in the following sizes to suit your individual requirements:

In case DOLMAR high-performance two-stroke engine oil is not available, it is urgently recommended to use a mixture ratio of 50:1 with other two-stroke engine oils, as otherwise optimum operation of the engine cannot be guaranteed.

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.
100:1 when using DOLMAR EXTRA high-performance two-stroke engine oil, i. e. mix 100 parts gasoline with 1 part oil.
50:1 when using other synthetic two-stroke engine oils (quality grade JASO FC or ISO EGD), i. e. mix 50 parts gasoline with 1 part oil.

Gasoline	50:1	50:1	100:1
1,000 cm 3 (1 litre)	20 cm 3	20 cm 3	10 cm 3
5,000 cm 3 (5 litres)	100 cm 3	100 cm 3	50 cm 3
10,000 cm 3 (10 litres)	200 cm 3	200 cm 3	100 cm 3

NOTE:
For preparing the fuel-oil mixture first mix the entire oil quantity with half of the fuel required, then add the remaining fuel. Thoroughly shake the mixture before filling it into the chain saw tank.
It is not wise to add more engine oil than specified 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 muffler. In addition, fuel consumption will rise and performance will decrease.

The Storage of Fuel
Fuels have a limited storage life. Fuel and fuel mixtures age through evaporation, especially at high temperatures. 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 immediately!

Chain oil

Use an oil with adhesive additive for lubricating the chain and guide bar. The adhesive additive prevents the oil from being flung 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).

BIOTOP chain oil is available in the following sizes:

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).

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 inappropriate 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 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 immediately!

Filling fuel and chain oil

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.

(Fig. 51)
Unscrew the tank cap (use the universal wrench if necessary, see illustration) and fill tank with fuel mixture or saw chain oil up to the bottom edge of the filling neck. Be careful not to spill fuel or chain oil!

	Chain oil
	Fuel/oil mixture

Screw on the tank cap by hand all the way. Clean the tank cap and the area around the tank after refuelling.

Checking the chain lubrication
Never work with the chain saw without sufficient chain lubrication. 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").

(Fig. 52)
Hold the running chain saw approx. 15 cm above a trunk or the ground (use an appropriate base).
If the lubrication is sufficient, you will see a light oil trace because oil will be flung 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.

Adjusting the chain lubrication
The engine must be switched off!
(Fig. 53)
You can adjust the oil pump feed rate with the adjusting screw (1). The adjusting screw is on the bottom side of the housing. The oil pump comes factory-set to a minimum feed rate. You can set the chain oil feed rate to minimum and maximum feed rate. To adjust the supply rate, use a small screwdriver to turn the adjusting screw:

• to the right for a faster
• to the left for a slower

oil feed rate.
Pick one of the two settings depending on the length of the guide bar. While working make sure there is enough chain oil in the tank. If necessary, add oil.

(Fig. 54)
To ensure troublefree operation of the oil pump the oil guide groove at the crank case (2) and the oil inlet bore in the guide bar (3) must be cleaned regularly.
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.

Starting the engine

Do not start the chain saw until after it is completely assembled and checked!

(Fig. 55)
Move at least 3 meters / 10 feet away from the place where the chain saw was fuelled.
Make sure you have a secure footing, and place the saw on the ground in such a way that the guide bar and chain are not near anything.
Actuate the chain brake (block it).
Hold the front handle firmly with one hand and press the saw against the ground.
Hold the down rear handguard with your right foot as shown.
Note: The Featherlight-Start System lets you start the saw without effort. Go through the starting procedure smoothly and evenly.

(Fig. 56)

Combination switch

Cold starting:
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). This also actuates the half-throttle lock.
Pull the starter handle (2) smoothly and evenly.

Do not pull the starter cable more than about 50 cm/20" out, and let it back in slowly by hand.
Repeat the starting procedure twice.
Move the combination switch (1) to the central "ON" position. Pull the starter handle smoothly and evenly again. As soon as the engine is running, grasp the rear handle (the safety lock button (3) is actuated by the palm of the hand) and press the throttle trigger (4).

The engine must be put in idle immediately after starting. If this is not done, the clutch can be damaged.
Now disengage the chain brake.

Warm starting:
As described above for cold starting, but before starting push the combination switch (1) up (Choke position) and then right away back to the middle "ON" position. This is only to engage the half-throttle lock. If the engine doesn't start after 2 or 3 pulls, repeat the entire starting procedure as described for cold starting.
NOTE: If the engine was switched off only for a short time, the saw can be started without using the combination switch.

If the fuel tank has been completely emptied and the engine has stopped due to lack of fuel prime the fuel pump (5) by pressing it several times until you can see fuel in the pump.

Stopping the engine
Depress the combination switch (1).
NOTE: After being pressed down, the combination switch will revert to the ON position again. The engine is switched off, but can be turned on again without moving the combination switch.

To cut off the ignition current, push the combination switch all the way down past the resistance point to the safety position ( ).

Checking the chain brake

The chain brake must be checked before every use of the saw!
Start the engine as described above (have a secure footing, place the chain saw on the ground so that the chain and guide bar are not near anything).

(Fig. 57)
Hold the front handle firmly, with your other hand on the rear grip.
Let the engine run at medium speed and push the handguard (6) in the direction of the arrow using the back of your hand, until the chain brake engages. The chain should now stop immediately.
Bring the engine back to idle and release the chain brake.

If the chain does not stop immediately in this test, turn off the engine immediately. Do NOT use the chain saw in this condition! Contact a DOLMAR authorized service center.

Adjusting the carburetor
(Fig. 58)

Carburetor adjustment may only be done by a specialist DOLMAR service center!
Only adjusting screw (S) can be manipulated by the user. If the saw chain moves in idle (i.e. without the throttle being pressed), it is imperative to correct the idle speed! Do not adjust the idle speed until after complete assembly and testing of the saw!
Idle speed adjustment must only be undertaken when the engine is warm, with a clean air filter and properly installed guide bar and chain.
Use a screwdriver (4 mm blade) for idle adjustments.

Adjusting the idle speed
Turn adjusting screw (S) counter-clockwise (unscrew): Idle speed decreases.
Turn adjusting screw (S) clockwise (screw in): Idle speed increases.

If the saw chain still moves during idle even after you have adjusted the idle speed, do NOT use the saw. Take it to a DOLMAR service center!

MAINTENANCE

Sharpening the saw chain

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!

(Fig. 59)
The chain needs sharpening when:
The sawdust produced when sawing damp wood looks like wood flour.
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.

Sharpen frequently, but without removing too much metal!
Generally, 2 or 3 strokes of the file will be enough. Have the chain resharpened at a service center when you have already sharpened it yourself several times.

Proper sharpening:

Use only chains and guide bars designed for this saw (see "Extract from the spare parts list")!

(Fig. 60)
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.
The minimum cutter length: 3 mm. Do not resharpen the chain when the minimum cutter length has been reached; at this point, the chain must be replaced (see "Extract from the spare parts list" and "Replacing the saw 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").

Excessive depth increases the risk of kickback!

(Fig. 61)
The sharpening angle (α) must be identical for all cutters!
30° for chain type 092 (91VG), 492 (91PX), 290 (90SG), 291 (90PX)
The teeth will have the proper angle (b) automatically if the proper round file is used.
80° for chain type 092 (91VG), 492 (91PX)
75° for chain type 290 (90SG), 291 (90PX)
Different angles result in a roughly, irregularly running chain, increase wear and tear and cause chain beakage.

Files and how to work with them
Use a special saw chain round file for sharpening. Standard round files are unsuitable. See "Extract from the spare parts list".
Type 092 (91VG), 492 (91PX): Saw chain round file, dia. 4.0 mm Type 290 (90SG), 291 (90PX): Saw chain round file, dia. 4.5 mm.

(Fig. 62)
The file should cut only when pushed forwards (arrow). Lift the file when leading it backwards.
First sharpen the shortest cutter. The length of this cutter is then the standard for all other cutters of the chain. New saw teeth must be filed to the exact same shape as the used teeth, including on their running surfaces.
File depending on chain type (90° or 10° to the guide bar).

(Fig. 63)
A file holder makes file guidance easier. It is marked for the correct sharpening angle of: α = 30°
(keep the marks parallel with the chain when filing, see illustration) and limits the cut depth to the correct 4/5 of the file diameter.

(Fig. 64)
After having sharpened the chain, the height of the depth limiter must be checked by means of a chain gauge. See "Extract from the spare parts list".
Correct even the smallest excess height with a special flat file (1). See "Extract from the spare parts list". Round off the front of the depth limiter (2).

Cleaning the inside of the sprocket guard


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!

Start the chain saw only after having assembled it completely and inspected.

(Fig. 65)
Remove the sprocket guard (1) (see "PUTTING INTO OPERATION" for the correct model) and clean out the interior with a brush.
Remove the chain (2) and guide bar (3).
NOTE:
Make sure there are no residues or foreign matter remaining in the oil guide groove (4) or on the chain tensioner (5). To install the guide bar, saw chain, and sprocket guard, see "PUTTING INTO OPERATION" for the correct model.
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.

Cleaning the guide bar


Protective gloves must be worn.

(Fig. 66)
Regularly inspect the bearing surfaces of the guide bar (7) for damage, and clean them with a suitable tool. Keep the two oiling holes (6) and the entire guide bar clean and free of foreign matter!

Replacing the saw chain


Use only chains and guide bars designed for this saw!

(Fig. 67)
Check the sprocket before mounting a new chain. Worn out sprockets (8) may damage the new chain and must therefore be replaced.
Remove the sprocket guard (see "PUTTING INTO OPERATION").
Remove the chain and guide bar. Remove circlip (9).

The circlip will pop out of the groove. When removing it, hold your thumb against it to prevent it from popping off.
Remove shim washer (11).
If the sprocket (8) is worn out, the complete clutch drum (12) will need to be replaced.
Install a complete new clutch drum (12), shim washer (11) and new circlip (9).
For replacing the guide bar, chain, and sprocket see "PUTTING INTO OPERATION".
NOTE:
Don't use a new chain on a worn chain sprocket. By the time 2 chains have worn, the sprocket has become worn out, so it should be replaced at least at every second chain replacement. To distribute the chain oil evenly, run a new chain at half-throttle for a few minutes before use.
New chains stretch, so check the chain tension frequently (see "Checking the chain tension").

Cleaning the air filter


To prevent eye injury, always wear eye protection when cleaning the filter with compressed air! Do not use fuel to clean the air filter.

(Fig. 68)
Pull out the hood cap (1).
Loosen the scew (2) counter-clockwise and remove the hood (3).
Push up the combination switch (4) (Choke position) to prevent dirt particles from falling into the carburetor. Pull the air filter cover tab (5) slightly in the direction of the arrow, and remove the air filter cover.
Remove the air filter (6).

Cover the intake opening with a clean cloth to prevent dirt particles from getting into the carburetor.
If the filter is very dirty, clean it in lukewarm water with dishwashing detergent.
Let the air filter dry completely.
If the filter is very dirty, clean it frequently (several times a day), because only a clean air filter provides full engine power.

Replace damaged air filters immediately. Pieces of cloth or large dirt particles can destroy the engine!
Insert the air filter (6) in the illustrated direction.

Do not insert the air filter upside-down, even after cleaning it. Otherwise dirt particles on the outside surface of the air filter come into the carburetor and can cause an engine trouble.
Put on the air filter cover.
Note: The air filter cover tab (5) will engage automatically if the air filter cover is properly positioned.
Push down the combination switch (4) and press the throttle (7) all the way down one time in order to deactivate the throttle lock.
Put on the hood (3). When doing so make sure that the lower pins (8) on both sides of the hood engage properly (when correctly assembled, the pins should not be visible).
Tighten screw (2) clockwise. Return the hood cap (1).

Replacing the spark plug


Do not touch the spark plug or plug cap if the engine is running (high voltage).
Switch off the engine before starting any maintenance work. A hot engine can cause burns. Wear protective gloves!
The spark plug must be replaced in case of damage to the insulator, electrode erosion (burn) or if the electrodes are very dirty or oily.

(Fig. 69)
Remove the filter cover (see "Cleaning the air filter"). Pull the plug cap (9) off the spark plug. You can remove the plug cap by hand.

Electrode gap
The electrode gap must be 0.6 mm.

Use only the following spark plugs: NGK CMR6A.

Checking the ignition spark

(Fig. 70)
Press the loosened spark plug (10) with the ignition cable firmly connected against the cylinder using insulated pliers (not near the spark plug opening).
Put combination switch (11) in the "ON" position.
Pull the starter cable hard.
If the function is correct, an ignition spark must be visible near the electrodes.

Checking the muffler screws

(Fig. 71)
Unscrew 3 screws (12) and remove the upper half of the muffler (13).
Note: For saw models with catalytic converters (PS-32 C, PS-32 C TLC), remove the converter along with the upper muffler half.
The screws on the bottom muffler half (14) are now accessible, and it is possible to check them for tightness. If they are loose, tighten by hand

do not over-tighten

Replacing the starter cable/ Replacing the return spring pack/Replacing the starter spring

(Fig. 72)
Unscrew three screws (1).
Remove fan housing (2).
Remove the air guide (3) from the fan housing.
CAREFUL! Injury hazard! Do not unscrew screw (7) if the return spring is under tension.
If the starter cable is to be replaced although it is not broken, it will be necessary to first de-tension the cable drum return spring (13).
To do this, use the grip to pull the cable all the way out of the fan housing.
Hold the cable drum with one hand, and with the other push the cable into the space (14).
Carefully let the drum turn until the return spring is no longer under tension.
Unscrew screw (7) and remove the driver (8) and spring (6).
Carefully remove the cable drum.
Remove any cable pieces.
Thread a new cable (dia. 3.0 mm, length 900 mm) as shown in the illustration (don't forget the washer (10)) and knot both ends as shown.
Pull knot (11) into the cable drum (5).
Pull knot (12) into the starter grip (9).
Put the drum on its spindle and turn it slightly until the return spring engages.
Place the spring (6) in the driver (8) and place them together in the cable drum (5) while turning slightly counter-clockwise.
Insert screw (7) and tighten.
Guide the cable into the slot (14) on the cable drum and turn the drum with the cable clockwise three times. Hold the cable drum with your left hand and with your right hand untwist the cable, pull it tight and hold it. Carefully release the cable drum. The spring will wind the cable around the drum.
Repeat the procedure once. The starter grip should now stand straight up on the fan housing.
NOTE: With the cable pulled all the way out, it must still be possible to turn the pulley another 1/4 turn against the return spring.

Danger of injury! Secure the cable grip when pulled out! It will whip back if the cable pulley is released by accident.

Replacing the return spring pack
Disassemble the fan housing and cable drum (see above).
CAREFUL! Injury hazard! The return spring can pop out!
Always wear eye protection and protective gloves!
Lightly tap the fan housing on a wooden surface with the entire surface of the hollow side, and hold it down. Now lift the fan housing carefully and in small steps. This will allow the return spring pack (13), which should now have fallen out, to relax in a controlled manner if the return spring has popped out of the plastic pack.
Carefully insert a new return spring cassette and press down until it engages.
Place the cable drum on it and turn it slightly until the return spring engages.
Install the spring (6) and driver (8) and screw on tight with screw (7).
Tension the spring (see above).

Replacing the starter spring
NOTE: If the spring (6) in the Featherlight-Starting system is broken, more effort will be required to start the engine and you will notice some resistance when pulling the starter cable. If you notice this, check the spring (6) and replace if necessary.

Mounting the fan housing
(Fig. 72)
Insert the air guide (3) in the fan housing so that the three recesses (4) engage.
Position the fan housing against the housing, press against it lightly and pull the starter grip until the starter engages.
Tighten screws (1).

Cleaning the air filter compartment / fan compartment

(Fig. 73)
Remove cover.
Remove the fan housing.

To prevent eye injury, always wear eye protection when cleaning the filter with compressed air!
The entire area (15) can now be brushed clean or cleaned with compressed air.

Cleaning the cylinder fins
(Fig. 74)
A bottle brush can be used to clean the cylinder fins.

Replacing the suction head

(Fig. 75)
The felt filter (16) of the suction head can become clogged. It is recommended to replace the suction head once every three months in order to ensure unimpeded fuel flow to the carburetor.
To remove the suction head for replacement, pull it out through the tank filler neck using a piece of wire bent at one end to form a hook.

Instructions for periodic maintenance
To ensure long life, prevent damage and ensure the full functioning of the safety features the following maintenance must be performed regularly. Guarantee claims can be recognized only if this work is performed regularly and properly. Failure to perform the prescribed maintenance work can lead to accidents!
The user of the chain saw must not perform maintenance work which is not described in the instruction manual. All such work must be carried out by a DOLMAR service center.

Service, spare parts

Maintenance and repair
The maintenance and repair of modern engines as well as all safety devices require qualified technical training and a special workshop equipped with special tools and testing devices.
Any work not described in this Manual may be performed only by a DOLMAR service center.
The DOLMAR service centers have all the necessary equipment and skilled and experienced personnel, who can work out cost-effective solutions and advise you in all matters. To find your local distributor, please visit www.dolmar.com
Repair attempts by third parties or unauthorized persons will void all warranty claims.

Spare parts
Reliable long-term operation, as well as the safety of your chain saw, depend among other things on the quality of the spare parts used. Use only original DOLMAR parts.
Only original spare parts and accessories guarantee the highest quality in material, dimensions, function and safety.
Original spare parts and accessories can be obtained from your local dealer. He will also have the spare part lists to determine the required spare part numbers, and will be constantly informed about the latest improvements and spare part innovations.
Please bear in mind that if parts other than original DOLMAR spare parts are used, this will automatically invalidate the DOLMAR product guarantee.

Trouble shooting

Malfunction	System	Observation	Cause
Chain does not run	Chain brake	Engine runs	Chain brake actuated.
Engine does not start or only with difficulty	Ignition system	Ignition spark	Malfunction in fuel supply system, compression system, mechanical malfunction.
		No ignition spark	STOP switch in position, fault or shortcircuit in the wiring, Spark plug cap or spark plug defective
	Fuel supply	Fuel tank is filled	Combination switch in Choke position, carburetor defective, suction head dirty, fuel line bent or interrupted.
	Compression system	Inside	Cylinder base packing ring defective, radial shaft packings defective, cylinder or piston rings defective
		Outside	Spark plug does not seal.
	Mechanical malfunction	Starter does not engage	Spring in starter broken, broken parts inside the engine.
Warm start difficulties	Carburetor	Fuel tank is filled Ignition spark	Wrong carburetor adjustment.
Engine starts, but dies immediately	Fuel supply	Fuel tank is filled	Wrong idling adjustment, suction head or carburetor dirty. Tank venting defective, fuel line interrupted, cable defective, Combination switch defective
Insufficient power	Several systems may be involved simultaneously	Engine is idling	Air filter dirty, wrong carburetor adjustment, muffler clogged, exhaust channel in cylinder clogged, spark arrester screen clogged.
No chain lubrication	Oil tank/pump	No oil on the chain	Oil tank empty. Oil guide groove dirty. Oil-pump adjusting screw incorrectly adjusted.