Stihl HT 105, HT 134, HT 135 Instruction Manual

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STIHL HT 105, 134, 135

Instruction Manual

Page 2

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Contents

English

Guide to Using this Manual 2 Safety Precautions and Working

Techniques 2 Using the Unit 8 Assembling the Unit 10 Cutting Attachment 11 Mounting the Bar and Chain 11 Tensioning the Chain 12

Original Instruction ManualPrinted on chlorine-free paper

Checking Chain Tension 13 Adjusting the Throttle Cable 13 Fitting the Clip 13 Fuel 14 Fueling 15 Chain Lubricant 15 Filling Chain Oil Tank 16 Checking Chain Lubrication 17 Adjusting the Telescoping Shaft 18 Fitting the Harness 18 Backpack Carrying System 19 Starting / Stopping the Engine 20 Operating Instructions 22 Taking Care of the Guide Bar 23

Printing inks contain vegetable oils, paper can be recycled.

Replacing the Air Filter 24 Adjusting the Carburetor 24 Spark Plug 24 Storing the Machine 25 Checking and Replacing the Chain

Sprocket 26 Maintaining and Sharpening the

Saw Chain 26 Maintenance and Care 30 Minimize Wear and Avoid Damage 32

Main Parts 33 Specifications 34 Maintenance and Repairs 36 Disposal 36 EC Declaration of Conformity 37 UKCA Declaration of Conformity 37

Dear Customer,

Thank you for choosing a quality engineered STIHL product.

It has been built using modern production techniques and comprehensive quality assurance. Every effort has been made to ensure your satisfaction and trouble-free use of the product.

Please contact your dealer or our sales company if you have any queries concerning this product.

Your

Dr. Nikolas Stihl

0458-699-0121-B. VA0.B22.

0000009174_009_GB

HT 105, HT 134, HT 135

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English

Guide to Using this Manual

Pictograms

The meanings of the pictograms attached to the machine are explained in this manual.

Depending on the model concerned, the following pictograms may be attached to your machine.

Fuel tank; fuel mixture of gasoline and engine oil

Chain oil tank; chain oil

Direction of chain rotation

Operate manual fuel pump

Manual fuel pump

Symbols in text

WARNING

Warning where there is a risk of an accident or personal injury or serious damage to property.

NOTICE

Caution where there is a risk of damaging the machine or its individual components.

Engineering improvements

STIHL's philosophy is to continually improve all of its products. For this reason we may modify the design, engineering and appearance of our products periodically.

Therefore, some changes, modifications and improvements may not be covered in this manual.

Safety Precautions and Working Techniques

Special safety precautions must be observed when working with the pole pruner because it operates at a very high chain speed, has very sharp cutters and a long reach.

It is important you read and understand the User Manual before commissioning and keep it in a safe place for future reference. Non-compliance with the User Manual may cause serious or even fatal injury.

Observe all applicable local safety regulations, e.g. by trade organizations, social insurance institutions, labor safety authorities etc.

If you have never used a power tool before: Have your dealer or other experienced user show you how to operate your machine – or attend a special course to learn how to operate it.

Minors are not allowed to work with the power tool – except adolescents above 16 years of age who are instructed under supervision.

Children, animals and bystanders must remain at a distance.

When not using the machine, it must be laid down in such a way that it does not endanger anyone. Ensure that the machine cannot be used without authorization.

HT 105, HT 134, HT 135

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275BA009 KN

The user is responsible for accidents or risks involving third parties or their property.

Do not lend or rent your power tool without the User Manual. Be sure that anyone using it understands the information contained in this manual.

The use of machines that emit noise may be limited to certain hours of the day as specified by national and/or regional or local regulations.

Anyone operating the machine must be well rested, in good physical health and in good mental condition.

If you have any condition that might be aggravated by strenuous work, check with your doctor before operating a machine.

If you have a pacemaker: The ignition system of your machine produces an electromagnetic field of very low intensity. This field may interfere with some pacemakers. STIHL recommends that persons with pacemakers consult their physician and the pacemaker manufacturer to reduce any health risk.

Anyone who has consumed alcohol or drugs or medicines affecting their ability to react must not operate a power tool.

Use your pole pruner for limbing only (removing or pruning branches). Saw wood and wooden objects only.

The machine must not be used for any other purposes – risk of accidents!

Only use guide bars, saw chains, chain sprockets and accessories that are explicitly approved for this power tool model by STIHL or are technically identical. If you have any questions in this respect, consult your dealer. Use

only high quality parts and accessories. in order to avoid the risk of accidents and damage to the machine.

STIHL recommends the use of STIHL original tools, guide bars, saw chains, chain sprockets and accessories. They are specifically designed to match the product and meet your performance requirements.

Never attempt to modify your power tool in any way since this may increase the risk of personal injury. STIHL excludes all liability for personal injury and damage to property caused while using unauthorized attachments.

Do not use a high-pressure washer to clean the power tool. The solid jet of water may damage parts of the unit.

Clothing and equipment

Wear proper protective clothing and equipment.

Clothing must be sturdy but allow complete freedom of movement. Wear close-fitting clothes such as a boiler suit, not a loose jacket.

Do not wear clothing which could become trapped in wood, brush or moving parts of the machine. Do not wear a scarf, necktie or jewelry. Tie up and confine long hair above your shoulders.

Wear cut protection safety boots with non-slip soles and steel toe caps.

WARNING

To reduce the risk of eye injuries, wear close-fitting safety glasses in accordance with European Standard EN 166. Make sure the safety glasses are a snug fit.

Wear "personal" sound protection, e.g. ear defenders.

Wear a safety hard hat where there is a danger of head injuries from falling objects.

Wear sturdy protective gloves made of a resistant material (e. g. leather).

STIHL can supply a comprehensive range of personal protective equipment.

Transporting the machine

Always stop the engine.

Always fit the chain scabbard – even when you carry the power tool for short distances.

HT 105, HT 134, HT 135

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Ensure that the power tool is always well balanced and hold it by the shaft for carrying. Do not touch hot parts of the machine, especially the surface of the muffler – Risk of burns!

By vehicle: When transporting in a vehicle, properly secure your machine to prevent turnover, damage and fuel spillage.

Refueling

Gasoline is highly flammable – keep away from fire or flame – do not spill any fuel – no smoking.

Always shut off the engine before refueling.

Do not fuel a hot engine – fuel may spill and cause a fire.

Open the fuel cap carefully to allow any pressure build-up in the tank to release slowly and avoid fuel spillage.

Only refuel the machine in a well ventilated place. If fuel has been spilled, immediately clean the machine – do not allow your clothes to be splashed with fuel. If that happens, change your clothes at once.

After fueling, tighten down the screw-type fuel cap as securely as possible.

This helps reduce the risk of unit vibrations causing an incorrectly tightened fuel cap to loosen or come off and spill quantities of fuel.

Check for leaks. Do not start the engine if there is a fuel leak – serious or fatal burns could result!

Before starting

Check that your power tool is properly assembled and in good condition – refer to appropriate chapters in the User Manual.

– Check the fuel system for leaks,

especially the visible parts, e. g., fuel cap, hose connections, manual fuel pump (only in machines with a manual fuel pump). In case of leakage and damage, do not start the engine – risk of fire! Have the machine serviced by a dealer before using it

– Correctly mounted guide bar

– Correctly tensioned saw chain

– The stop switch must be easy to

push

– Check the choke lever, throttle

trigger and throttle trigger lockout for smooth action - throttle trigger must return automatically to idle position. The choke lever must spring back from the g and < positions to the run position F when the throttle trigger lockout and throttle trigger are squeezed

– Check that the spark plug boot is

secure – a loose boot may cause sparking that could ignite combustible fumes and cause a fire!

– Never attempt to modify the controls

or safety devices

– Keep the handles dry and clean –

free from oil and dirt – this is important for safe control of the machine

– Adjust the harness to suit your

height and reach. Observe the chapter "Fitting the Harness"

To reduce the risk of personal injury, do not operate your power tool if it is damaged or not properly assembled!

If you use a harness: Practice setting down the machine quickly by removing the harness or by unhooking the machine as you would in an emergency. To avoid damage, do not throw the machine to the ground when practicing.

Starting the engine

Start the engine at least 3 meters from the fueling spot, outdoors only.

Place the power tool on level ground in an open area. Make sure you have good balance and secure footing. Hold the power tool securely. The chain must be clear of the ground and all other obstructions because it may begin to run when the engine starts.

Your power tool is designed to be operated by one person only. Do not allow other persons within a radius of 15 m of your own position – even when starting the power tool – Risk of injury!

Start the engine as described in the user manual.

The saw chain continues running for a short period when you release the throttle trigger – flywheel effect!

HT 105, HT 134, HT 135

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390BA026 KN

15m (50ft)

Check engine idling speed: The saw chain must not move when the engine is idling – with the throttle trigger released.

Keep easily flammable materials (e.g. wood chips, bark, dry grass, fuel) away from the hot exhaust gas flow and the hot muffler surface – Risk of fire!

Holding and guiding the machine

Always hold the power tool firmly with both hands – right hand on the control handle, left hand on the drive tube – even if you are left-handed. Wrap your thumbs firmly around the control handle and shaft.

Machines with telescopic shaft: Extend the telescopic shaft only as far as the working height.

While working

Make sure you always have good balance and secure footing.

In the event of impending danger or in an emergency, switch off the engine immediately by pressing the stop switch.

This power tool is not insulated. Keep at least 15 m away from electric power lines – Danger of fatal electric shock!

Do not allow other persons within a radius of 15 m of your own position due to falling branches and ejected wood particles – Risk of injury!

This distance must also be maintained in relation to objects (vehicles, window panes) – risk of property damage!

Keep the bar nose at least 15 m away from electric power lines . Electric current may also arc over from highvoltage cables at greater distance. Have the power switched off before starting work in the immediate vicinity of power lines.

Switch off the engine before changing the saw chain – Risk of injury!

Ensure that the engine idling speed is correct. The saw chain must not move when the throttle trigger has been released.

It the saw chain continues moving, have the machine repaired by your specialist dealer. Check and correct the idle speed setting at regular intervals.

Never leave a running machine unattended.

Take special care in slippery, wet conditions, in snow and on slopes, uneven ground, etc. – Risk of slipping!

Watch out for obstacles: tree stumps, roots – risk of tripping or stumbling!

When working at heights:

– Always use a lift bucket

– Never use the machine while

standing on a ladder or in a tree

– Never work on an insecure support

– Never use the machine with just one

hand

Be particularly alert and cautious when wearing hearing protection because your ability to hear warnings (shouts, alarms, etc.) is restricted.

Take breaks when you start getting tired or feeling fatigue – risk of accidents!

Work calmly and carefully – in daylight conditions and only when visibility is good. Proceed with caution, do not put others in danger.

HT 105, HT 134, HT 135

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246BA030 KN

0000003462_002

As soon as the engine is running, the power machine generates toxic exhaust gas. These gases may be odorless and invisible and may contain unburned hydrocarbons and benzene. Never run the engine indoors or in poorly ventilated locations, even if your model is equipped with a catalytic converter.

To reduce the risk of serious or fatal injury from breathing toxic fumes, ensure proper ventilation when working in trenches, hollows or other confined locations.

Stop work immediately if you start suffering from nausea, headaches, impaired vision (e.g. your field of vision gets smaller), impaired hearing, dizziness, or impaired concentration – these symptoms may possibly be the result of too-high exhaust gas concentration – Risk of accidents!

Operate your power tool so that it produces a minimum of noise and emissions – do not run the engine unnecessarily, accelerate the engine only when working.

To reduce the risk of fire, do not smoke while operating or standing near your power tool. Combustible fuel vapor may escape from the fuel system.

Dust (e.g. sawdust), fumes and smoke, generated while using the machine, may be hazardous to health. Wear a dust mask in case of dust formation.

If your power tool is subjected to unusually high loads for which it was not designed (e.g. heavy impact or a fall), always check that it is in good condition before continuing work – see also "Before Starting". Check in particular that the fuel system has no leaks and the safety equipment is fully operative. Never use a power tool that is no longer safe to operate. In case of doubt, contact a dealer.

If you use a harness, ensure that the exhaust gas flow is diverted away from your body – Risk of fire!

Limbing

Hold the power tool at an angle. Do not stand directly underneath the limb being cut. Do not exceed an angle of 60° from the horizontal. Watch for falling wood.

Keep the work area clear – remove interfering limbs and brush.

Before sawing branches, establish an escape route and remove all obstacles.

When performing the separating cut, position the bar against the branch near the hook. This will prevent the power tool from making jolting movements when you start the separating cut.

Start the cut with the saw chain at full throttle.

Always cut with a correctly sharpened, properly tensioned saw chain – the depth gauge setting must not be too large.

Do not operate your power tool in the starting throttle position – engine speed cannot be controlled in this position.

Perform cross-cut from the top downward to avoid the chain pinching in the cut.

If branches are thick or heavy, make a relief cut – see "Using the Pole Pruner".

Exercise extreme caution when sawing branches under tension – Risk of injury! Always make a relieving cut on the compression side first and then perform the bucking cut at the tension side.

Be careful when cutting splintered wood – Risk of injury from ejected pieces of wood!

HT 105, HT 134, HT 135

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If working on a slope, always stand uphill or to the side of the branch which is to be sawn. Watch out for rolling branches.

Note when reaching the end of a cut that the power tool is no longer supported by the guide bar in the cut. The user must bear the weight of the machine – risk of loss of control!

Always pull the power tool out of the cut with the saw chain running.

Use the power tool for limbing and pruning only, not for felling – Risk of accidents!

Keep the saw chain away from any foreign objects: Stones, nails, etc. may be ejected and damage the saw chain.

If a rotating saw chain hits a stone or another hard object, sparks may be generated which may ignite easily flammable materials under certain conditions. Also dried-out plants and brushwood are combustible, above all in hot and dry weather. If there is a risk of fire, do not use your pole pruner near easily flammable materials, dry plants or scrub. It is mandatory that you ask the responsible forestry office about the current fire hazard.

Before you leave the machine: Shut the engine off.

Vibrations

Prolonged use of the power tool may result in vibration-induced circulation problems in the hands (whitefinger disease).

No general recommendation can be given for the length of usage because it depends on several factors.

The period of usage is prolonged by:

– Hand protection (wearing warm

gloves)

– Work breaks

The period of usage is shortened by:

– Any personal tendency to suffer

from poor circulation (symptoms: frequently cold fingers, tingling sensations).

– Low outside temperatures.

– The force with which the handles

are held (a tight grip restricts circulation).

Continual and regular users should monitor closely the condition of their hands and fingers. If any of the above symptoms appear (e.g. tingling sensation in fingers), seek medical advice.

Maintenance and Repairs

Service the machine regularly. Do not attempt any maintenance or repair work not described in the instruction manual. Have all other work performed by a servicing dealer.

STIHL recommends that you have servicing and repair work carried out exclusively by an authorized STIHL servicing dealer. STIHL dealers are regularly given the opportunity to attend training courses and are supplied with the necessary technical information.

Only use high-quality replacement parts in order to avoid the risk of accidents and damage to the machine. If you have any questions in this respect, consult a servicing dealer.

STIHL recommends the use of genuine STIHL replacement parts. They are specifically designed to match your model and meet your performance requirements.

To reduce the risk of injury from unintentional engine startup, always shut off the engine and disconnect the spark plug boot before performing any repairs, maintenance or cleaning work. – Exception: Carburetor and idle speed adjustments.

Do not turn the engine over on the starter with the spark plug boot or spark plug removed since there is otherwise a risk of fire from uncontained sparking.

To reduce the risk of fire, do not service or store your machine near open flames.

Check the fuel filler cap for leaks at regular intervals.

Use only a spark plug of the type approved by STIHL and make sure it is in good condition – see "Specifications".

Inspect the ignition lead (insulation in good condition, secure connection).

Check the condition of the muffler.

To reduce the risk of fire, do not operate your machine if the muffler is damaged or missing – there is also a risk of hearing damage.

Do not touch a hot muffler since burn injury will result.

Shut off the engine

– before checking chain tension.

– before retensioning the chain.

– before replacing the chain.

– before rectifying problems.

HT 105, HT 134, HT 135

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246BA030 KN

Observe sharpening instructions – keep the chain and guide bar in good condition at all times for safe and correct handling of the machine. The chain must be properly sharpened, tensioned and well lubricated.

Always change the chain, guide bar and sprocket in good time.

Store fuel and chain lubricant in properly labeled, safety-type canisters only. When handling gasoline, avoid direct contact with the skin and avoid inhaling fuel vapor – health risk.

Using the Unit

Preparation

N Wear suitable protective clothing,

observe safety precautions

N Adjust telescoping shaft to the

required length (HT 105, HT 135 only)

N Starting the engine N Fitting the harness

Cutting sequence

To allow branches to free fall, always cut the lower branches first. Prune heavy branches (large diameter) in several controllable pieces.

WARNING

Never stand directly underneath the branch you are cutting – be wary of falling branches. – Note that a branch may spring back at you after it hits the ground – risk of injury.

for HT 134

Always hold the shaft with your left hand in the area of the handle hose.

The shaft should always be held at an angle of 60° or less.

The least tiring working position is a tool angle of 60°.

Any lesser angle may be used to suit the situation.

Disposal

Do not throw cuttings into the garbage can – they can be composted.

Working technique

Hold the control handle with your right hand, and the shaft with your left hand. Your left arm should be extended to the most comfortable position.

HT 105, HT 134, HT 135

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390BA024 KN

0000-GXX-1568-A0

0000-GXX-1569-A0

Cross-cut

To avoid pinching the saw in the cut, position the bar in the area of the housing against the branch and then perform the cross-cut from the top downward. The saw chain can be positioned precisely using the gauge bar.

Relieving cut

N relieving cut (1) on the underside of

the branch. To do this, position the cutting attachment and guide it down to the bar nose in an arc.

N Perform the cross cut (2) – position

the slide with the housing against the branch.

Flush-cutting thick branches

0000003462_003

Cutting above obstacles

The machine's long reach makes it possible to prune branches that are overhanging obstacles, such as rivers or lakes. The tool angle in this case depends on the position of the branch.

Cutting from a lift bucket

To avoid tearing the bark on thick branches, always start by performing a

HT 105, HT 134, HT 135

If the branch diameter is more than 10 cm (4 in), first

N perform the undercut (3) and then

cross-cut at a distance of about 20 cm/8 in (A) from the final cut. Then carry out the flush-cut (4), starting with a relieving cut and finishing with a cross-cut.

0000003451_002

The machine's long reach enables cutting to be performed next to the trunk without the risk of the lift bucket damaging other branches. The tool angle in this case depends on the position of the branch.

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0000098170_001

Assembling the Unit

Assembling the Pole Pruner

N Remove the cap (1) N Adjust th e telescopic shaft to a = 10

cm (HT 105, HT 135)

N Mark b = 6 cm on the shaft (2) N Slide the transmission (3) onto the

shaft (2) up to mark b

90°

N Align the collet (4) (with the

clamping screws at the bottom of the shaft) and the transmission (3) (with the oil tank cap facing up) as shown

N Tighten down the screws (5) firmly

If you cannot push the transmission (3) onto the shaft (2) up to mark b:

N Unscrew the nut (7) and remove the

chain sprocket cover (6)

N Turn the chain sprocket (8) and

push the transmission (3) onto shaft (2) up to mark b

N Place the chain sprocket cover (6) N Fit the nut (7) and tighten it down

firmly

HT 105, HT 135

0000098528_001

N Remove the protective cap (9) N Turn the shaft (2) and press it in the

direction of the control handle (10) and the housing (11) until the distance c = 2 cm and d = 3 cm

11 10

90°

0000098622_001

N Align the housing (11) (with the

manual fuel pump facing up), the control handle (with the stop switch facing up) and the transmission (3) (with the oil tank cap facing up) as shown

N Tighten down the screws (12) firmly

The pole pruner does not need to dismantled again.

0000098171_002

90°

0000098529_001

0000098594_001

HT 105, HT 134, HT 135

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001BA248 KN

001BA244 KN

0000003452_002

0000097194_001

Cutting Attachment

A cutting attachment consists of the saw chain, guide bar and chain sprocket.

The cutting attachment that comes standard is designed to exactly match the pole pruner.

– The pitch (t) of the saw chain (1),

chain sprocket and the nose sprocket of the Rollomatic guide bar must match.

– The drive link gauge (2) of the saw

chain (1) must match the groove width of the guide bar (3).

If non-matching components are used, the cutting attachment may be damaged beyond repair after a short period of operation.

Chain Scabbard

The scope of supply includes a bar scabbard that matches the cutting attachment.

If guide bars of different lengths are mounted to the pole pruner, always use a chain scabbard of the correct length which covers the complete guide bar.

The length of the matching guide bars is marked on the side of the chain scabbard.

Mounting the Bar and Chain

Removing the chain sprocket cover

N Unscrew the nut and remove the

cover

N Turn the screw (1)

counterclockwise until the tensioner slide (2) butts against the left end of the housing slot, then back it off 5 full turns

HT 105, HT 134, HT 135

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390BA003 KN

390BA044 KN

390BA045 KN

Fitting the saw chain

WARNING

Wear work gloves to protect your hands from the sharp cutters.

N Fit the saw chain – start at the bar

nose

N Fit the guide bar over the screw (3)

and engage peg of tensioner slide in the hole (4) – place the saw chain over the chain sprocket (5) at the same time

N Turn the tensioning screw (1)

clockwise until there is very little chain sag on the underside of the bar – and the drive link tangs are engaged in the bar groove

N Refit the cover and screw on the nut

finger-tight

N Go to chapter on "Tensioning the

Saw Chain"

Tensioning the Chain

Re-tensioning during cutting work:

N Shut off the engine N Loosen nuts N Raise the guide bar at the nose N Use the screwdriver to turn the

screw (1) to the right until the saw chain rests against the underside of the guide bar

N Raise the guide bar further and

tighten the nuts securely

N Next step: Continue with "Checking

Chain Tension"

A new saw chain has to be re-tensioned more often than one that has been in use for some time.

N Check chain tension frequently –

see chapter on "Operating Instructions"

HT 105, HT 134, HT 135

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390BA046 KN

0000-GXX-1672-A0

Checking Chain Tension

N Shut off the engine N Wear work gloves to protect your

hands

N The saw chain must fit snugly

against the underside of the bar and it must still be possible to pull the chain along the guide bar by hand

N If necessary, re-tension the saw

chain

A new saw chain has to be re-tensioned more often than one that has been in use for some time.

N Check chain tension frequently –

see chapter on "Operating Instructions"

Adjusting the Throttle Cable

It may be necessary to correct the adjustment of the throttle cable after assembling the machine or after a prolonged period of operation.

Adjust the throttle cable only when the machine is completely and properly assembled.

N Set the throttle trigger to the full

throttle position.

N Rotate the screw in the throttle

trigger clockwise until you feel initial resistance. Then rotate it another half turn in the same direction.

Fitting the Clip

Clip-On Carrying Ring (only versions with telescoping shaft)

Position of carrying ring

Depending on the shaft length, the

0000-GXX-2145-A0

following positions are recommended:

– Telescoping shaft compressed,

distance A = 15 cm (6 in)

– Telescoping shaft fully extended,

distance B = 50 cm (20 in)

Fitting the clip-on carrying ring

0000-GXX-1673-A0

HT 105, HT 134, HT 135

N Squeeze the ends (arrows) together

and push carrying ring onto the shaft.

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Fuel

The engine requires a mixture of gasoline and engine oil.

WARNING

Avoid direct skin contact with fuel and breathing in of gasoline fumes.

STIHL MotoMix

STIHL recommends using STIHL MotoMix. This pre-blended fuel is free of benzene and lead, is distinguished by a high octane rating, and always provides the proper mixing ratio.

STIHL MotoMix uses STIHL HP Ultra two-stroke engine oil for optimum engine life.

MotoMix is not available in all markets.

Mixing fuel

NOTICE

Unsuitable fuels or a mixing ratio that deviates from the specification can lead to severe engine damage. The engine, seals, fuel lines and fuel tank may be damaged if low-quality gasoline or engine oil is used.

Gasoline

Use only high-quality gasoline with an octane rating of at least 90 ROC – leaded or unleaded.

Gasoline with an alcohol component exceeding 10% can cause impaired engine performance in engines with manually adjustable carburetors and thus should not be used in these engines.

Engines with M-Tronic deliver full engine performance using gasoline with an alcohol component of up to 27% (E27).

Engine oil

If you mix the fuel yourself, use only STIHL two-stroke engine oil or another high-performance engine oil classified as JASO FB, JASO FC, JASO FD, ISOL-EGB, ISO-L-EGC or ISO-L-EGD.

STIHL specifies STIHL HP Ultra twostroke engine oil or an equivalent highperformance engine oil in order to maintain emission limits over the machine’s service life.

Mixing ratio

with STIHL two-stroke engine oil 1:50; 1:50 = 1 part oil + 50 parts gasoline

Examples

Quantity of gasoline

Liters Liters (ml)

10.02(20) 5 0.10 (100) 10 0.20 (200) 15 0.30 (300) 20 0.40 (400) 25 0.50 (500)

N Pour oil into an approved safety fuel

canister first, then add gasoline and mix thoroughly

STIHL two-stroke engine oil 1:50

Storing fuel mixture

Store in approved safety fuel canisters only in a dry, cool and secure place protected against light and sunlight.

Fuel mixture deteriorates with age – mix only as much as needed for a few weeks. Do not store fuel mixture for longer than 30 days. The fuel mixture can become unusable more quickly if exposed to light, sunlight or low or high temperatures.

STIHL MotoMix however can be stored for up to 5 years without any problems.

N Shake the canister containing the

fuel mixture thoroughly before refueling

WARNING

Pressure may have built up in the canister – open it carefully.

N The fuel tank and the canister in

which fuel mixture is stored should be cleaned thoroughly from time to time

Residual fuel and the liquid used for cleaning must be disposed of in accordance with regulations and without harming the environment!

HT 105, HT 134, HT 135

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0000-GXX-0476-A0

002BA447 KN

002BA448 KN

Fueling

Preparations

N Before fueling, clean the filler cap

and the area around it to ensure that no dirt falls into the tank.

N Position the machine so that the

tank cap faces up.

Opening the Tank Cap

Filling Up with Fuel

Take care not to spill fuel while fueling and do not overfill the tank.

STIHL recommends you use the STIHL filler nozzle for fuel (special accessory).

N Fill up with fuel.

Closing the Tank Cap

N Place the cap in the opening. N Turn the cap clockwise as far as

stop and tighten it down as firmly as possible by hand.

Chain Lubricant

For automatic and reliable lubrication of the chain and guide bar – use only an environmentally compatible quality chain and bar lubricant. Rapidly biodegradable STIHL BioPlus is recommended.

NOTICE

Biological chain oil must be resistant to aging (e.g. STIHL BioPlus), since it will otherwise quickly turn to resin. This results in hard deposits that are difficult to remove, especially in the area of the chain drive and chain. It may even cause the oil pump to seize.

The service life of the chain and guide bar depends on the quality of the lubricant. It is therefore essential to use only a specially formulated chain lubricant.

WARNING

Do not use waste oil. Renewed contact with waste oil can cause skin cancer. Moreover, waste oil is environmentally harmful.

N Turn the cap counterclockwise until

it can be removed from the tank opening.

N Remove the tank cap.

HT 105, HT 134, HT 135

NOTICE

Waste oil does not have the necessary lubricating properties and is unsuitable for chain lubrication.

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0000097195 001

0000,GXX-0135-A0 KN

0000-GXX-0136-A0

0000-GXX-0137-A0 KN

0000-GXX-0138-A0 KN

0000-GXX-0137-A0 KN

0000-GXX-0139-A0 KN

0000-GXX-0140-A0 KN

Filling Chain Oil Tank

Preparations

N Thoroughly clean the fuel cap and

the area around it to ensure that no dirt falls into the tank

N Position the machine so that the fuel

cap is facing upwards

To open:

To close:

N Twist fuel cap (ca. 1/4 turn)

Clip is in an upright position: N Fit the fuel cap – marks on the fuel

cap and oil tank must line up.

N Push the fuel cap down as far as it

will go

Markings on fuel cap and oil tank must align

N Open the bracket

N Remove the fuel cap

Filling up with chain oil

N Fill up with chain oil

Take care not to spill chain oil during refilling and do not overfill the tank.

STIHL recommends use of the STIHL filling system for chain oil (special accessory).

N Hold the fuel cap down and twist it

clockwise until it engages

Then the markings on fuel cap and oil tank will align

HT 105, HT 134, HT 135

Page 19

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0000-GXX-0141-A0 KN

0000-GX-0142 A0 KN

002BA584 KN

0000-GXX-0136-A0

390BA048 KN

Checking Chain Lubrication

N Close the bracket lock

The fuel cap is locked

If the oil level in the tank does not go down, the reason may be a problem in the oil supply system: Check chain lubrication, clean the oilways, contact your dealer for assistance if necessary. STIHL recommends that maintenance and repair work be carried out only by authorised STIHL dealers.

If the fuel cap will not lock onto the oil tank

The base of the fuel cap is tilted in relation to the upper part.

N Remove the fuel cap from the oil

tank and look at it from above

left: Base of fuel cap is tilted –

interior marking (1) is aligned with the exterior marking

right: Bottom of the fuel cap in cor-

rect position – inner mark is under the grip. It does not align with the exterior marking

N Fit fuel cap and twist it

counterclockwise until it engages in the seat of the filling port

N Continue to twist the fuel cap

counterclockwise (approx. 1/4 turn) – this will twist the base of the cap into the correct position

N Twist the fuel cap clockwise and

close it – see section "Closing"

The saw chain must always throw off a small amount of oil.

NOTICE

Never operate without chain lubrication. If the chain runs dry, the whole cutting attachment will be irretrievably damaged within a very short time. Always check chain lubrication and the oil level in the tank before starting work.

Every new chain has to be broken in for about 2 to 3 minutes.

After breaking in the chain, check chain tension and adjust if necessary – see "Checking Chain Tension".

HT 105, HT 134, HT 135

Page 20

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0000-GXX-1663-A0

0000-GXX-1664-A0

Adjusting the Telescoping Shaft

WARNING

Always shut off the engine and fit the chain scabbard!

N Loosen the clamp nut half a turn

counterclockwise

N Adjust the shaft to the required

length

N Tighten the nut clockwise

Fitting the Harness

The type and version of the harness depend on the market.

Shoulder strap (HT 134)

0000097196_001

N Put on the shoulder strap (1) N Adjust the length of the strap N With the power tool attached, the

carabiner (2) must be at about the same height as your right hip

Shoulder strap (HT 105, HT 135)

N Put on the shoulder strap (1) N Adjust the length of the strap N With the power tool attached, the

carabiner (2) must be at about the same height as your right hip

HT 105, HT 134, HT 135

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0000-GXX-1571-A0

Backpack Carrying System

Only versions with rigid shaft

N Put the backpack carrying system

(1) on your back and adjust it as described in the instruction leaflet provided

N Attach the carabiner (2) to the

machine's carrying ring

N Attach the pole pruner to the

carrying strap when cutting

N Adjust the hip belt (3), both shoulder

straps (4) and the carrying strap (5)

Only versions with telescoping shaft

0000-GXX-1572-A0

0000-GXX-1573-A1

N Put the backpack carrying system

(1) on your back and adjust it as described in the instruction leaflet provided

N Attach the carabiner (3) to the clip-

on carrying ring (2) on the shaft

N Attach the pole pruner to the

carrying strap when cutting

HT 105, HT 134, HT 135

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0000-GXX-0477-A0

0000-GXX-0478-A0

N Adjust the hip belt (3), both shoulder

straps (4) and the carrying strap (5)

N Squeeze the clip (carrying ring)

together to move it up or down the shaft

Starting / Stopping the Engine

Controls

1 Throttle trigger lockout 2 Throttle trigger

0000-GXX-1574-A0

3 Stop switch with Run and Stop

positions. Depress the stop switch (…) to switch off the ignition – see "Function of stop switch and ignition system".

Function of stop switch and ignition system

The ignition is switched off and the engine stopped when the stop switch is pressed. The stop switch returns automatically to the Run position when it

0000-GXX-1575-A0

is released: The ignition is switched on again after the engine stops – the engine is then ready to start.

Starting the Engine

N Press the manual fuel pump

bulb (9) at least five times – even if the bulb is already filled with fuel.

N Press in the choke knob (8) and turn

it to the position that suits the engine temperature:

g if the engine is cold < for warm start – also use this posi-

tion if the engine has been running but is still cold.

HT 105, HT 134, HT 135

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0000-GXX-1576-A0

Cranking

N Remove the chain scabbard. Check

that the chain is not touching the ground or any other obstacles.

N Place the unit on the ground: It must

rest securely on the engine support and the hook. If necessary, rest the hook on a raised support (e.g. a branch, mound or something similar).

WARNING

Check that nobody is standing within the working range of the pruner.

N Make sure you have a safe and

secure footing.

N Hold the unit with your left hand on

the fan housing and press it down firmly – your thumb should be under the fan housing.

NOTICE

Do not stand or kneel on the drive tube. N Hold the starter grip with your right

hand.

N Pull the starter grip slowly until you

feel it engage and then give it a brisk strong pull.

NOTICE

Do not pull out the starter rope all the way – it might otherwise break.

N Do not let the starter grip snap back.

Guide it slowly back into the housing so that the starter rope can rewind properly.

N Continue cranking until the engine

runs.

As soon as the engine runs

N Press down the throttle trigger

lockout and open the throttle – the choke knob moves to the run position F. After a cold start, warm up the engine by opening the throttle several times.

WARNING

Risk of injury from saw chain running when the engine is idling. Adjust the carburetor so that the saw chain does not run when the engine is idling – see “Adjusting the Carburetor”.

Your machine is now ready for operation.

Stopping the Engine

N Depress the stop switch – the

engine stops – release the stop switch – it springs back to the run position.

Other Hints on Starting

Engine stalls in cold start position g or under acceleration.

N Move the choke knob to < and

continue cranking until the engine runs.

Engine does not start in warm start position <

N Move the choke knob to g and

continue cranking until the engine runs.

0000-GXX-1558-A0

If the engine does not start

N Check that all settings are correct. N Check that there is fuel in the tank

and refuel if necessary.

N Check that the spark plug boot is

properly connected.

N Repeat the starting procedure.

Engine is flooded N Move the choke knob to F and

continue cranking until the engine runs.

HT 105, HT 134, HT 135

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Fuel tank run until completely dry N After refueling, press the manual

fuel pump bulb at least five times – even if the bulb is already filled with fuel.

N Set the choke knob to suit the

engine temperature.

N Now start the engine.

Operating Instructions

During Break-In Period

A factory-new machine should not be run at high revs (full throttle off load) for the first three tank fillings. This avoids unnecessary high loads during the break-in period. As all moving parts have to bed in during the break-in period, the frictional resistances in the engine are greater during this period. The engine develops its maximum power after about 5 to 15 tank fillings.

During Operation

NOTICE

Do not make the mixture leaner to achieve an apparent increase in power – this could damage the engine – see "Adjusting the Carburetor".

Check chain tension frequently

A new chain has to be retensioned more often than one that has been in use for some time.

Chain cold

Tension is correct when the chain fits snugly against the underside of the bar and can still be pulled along the bar by hand. Retension if necessary – see "Tensioning the Saw Chain".

Chain at operating temperature

The chain stretches and begins to sag. The drive links must not come out of the bar groove – the chain may otherwise jump off the bar. Retension the chain – see "Tensioning the Saw Chain".

NOTICE

The chain contracts as it cools down. If it is not slackened off, it can damage the gear shaft and bearings.

After long period of full-throttle operation

Allow engine to run for a short while at idle speed so that engine heat can be dissipated by the flow of cooling air. This protects engine-mounted components (ignition, carburetor) from thermal overload.

After Finishing Work

N Slacken off the chain if you have

retensioned it at operating temperature during cutting work.

NOTICE

Always slacken off the chain after finishing work. The chain contracts as it cools down. If it is not slackened off, it can damage the gear shaft and bearings.

Storing your saw for a short period

Fit the chain scabbard and allow engine to cool down. To avoid condensation, fill the fuel tank and keep the machine in a dry place, well away from sources of ignition, until you need it again.

HT 105, HT 134, HT 135

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Storing for a long period

See chapter on "Storing the Machine"

Taking Care of the Guide Bar

N Turn the bar over – every time you

sharpen the chain and every time you replace the chain – this helps avoid one-sided wear, especially at the nose and underside of the bar

N Regularly clean the oil inlet hole (1),

the oilway (2) and the bar groove (3)

N Measure the groove depth – with the

scale on the filing gauge (special accessory) – in the area used most for cutting

The drive link tangs will otherwise scrape along the bottom of the groove – the cutters and tie straps will not ride on the bar rails.

0000097197_001

HT 105, HT 134, HT 135

Chain type Chain pitch Minimum

groove depth Picco 3/8" P 5.0 mm Picco 1/4" P 4.0 mm

If groove depth is less than specified: N Replace the guide bar

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0000-GXX-0482-A0

0000-GXX-0495-A0

Replacing the Air Filter

Filters have an average life of more than a year. Do not remove the filter cover or replace the air filter as long as there is no noticeable loss of power.

If there is a noticeable loss of engine power

N Turn the choke knob to g. N Loosen the screws (1). N Remove the filter cover (2). N Clean away loose dirt from around

the filter.

N Remove the filter element (3). N Replace dirty or damaged filter

element (3).

N Replace any damaged parts.

Installing the Filter Element

Adjusting the Carburetor

The carburetor has been set at the factory to provide an optimum fuel-air mixture under most operating conditions.

Adjusting Idle Speed

Engine stops while idling N Warm up the engine for about

3 minutes.

N Turn the idle speed screw (LA)

slowly clockwise until the engine runs smoothly – the saw chain must not rotate.

Chain rotates when engine is idling N Turn the idle speed screw (LA)

counterclockwise until the chain stops running and then turn the screw another 1/2 to 3/4 turn in the same direction.

Spark Plug

N If the engine is down on power,

difficult to start or runs poorly at idle speed, first check the spark plug.

N Fit a new spark plug after about 100

operating hours – or sooner if the electrodes are badly eroded. Install only suppressed spark plugs of the type approved by STIHL – see "Specifications".

Removing the Spark Plug

0000-GXX 0537-A0

N Remove the cover (1). N Pull off the spark plug boot (2). N Unscrew the spark plug (3).

N Install the filter element (3) in the

filter housing and fit the cover.

N Insert the screws (1) and tighten

them down firmly.

WARNING

If the chain continues moving when the engine is idling, have your power tool checked and repaired by your servicing dealer.

HT 105, HT 134, HT 135

Page 27

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000BA039 KN

000BA045 KN

Checking the Spark Plug

N Clean dirty spark plug. N Check electrode gap (A) and

readjust if necessary – see "Specifications".

N Rectify the problems which have

caused fouling of the spark plug.

Possible causes are:

– Too much oil in fuel mix.

– Dirty air filter.

– Unfavorable running conditions.

N Use resistor type spark plugs with a

properly tightened adapter nut.

Installing the Spark Plug

N Screw the spark plug (3) into the

cylinder.

N Tighten down the spark plug (3) with

the combination wrench.

N Press the boot (2) firmly onto the

spark plug.

N Fit the cover (1) and screw it down

firmly.

Storing the Machine

For periods of about 30 days or longer N Drain and clean the fuel tank in a

well-ventilated area.

N Dispose of fuel properly in

accordance with local environmental requirements.

N If a manual fuel pump is fitted: Press

the manual fuel pump at least 5 times.

N Start the engine and run it at idling

speed until it stops.

N Remove saw chain and guide bar;

clean and spray with protective oil

N Thoroughly clean the machine - pay

special attention to the cylinder fins and air filter

N When using biological chain oil (e.g.

STIHL BioPlus), fill the lubricant oil tank

N Store the machine in a dry and

secure location Keep out of the reach of children and other unauthorized persons

WARNING

Arcing may occur if the adapter nut (1) is loose or missing. Working in an easily combustible or explosive atmosphere may cause a fire or an explosion. This can result result in serious injuries or damage to property.

HT 105, HT 134, HT 135

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000BA054 KN

Checking and Replacing the Chain Sprocket

N Remove chain sprocket cover, saw

chain and guide bar

Replace the chain sprocket

– replace after using two saw chains

or sooner

– if the wear marks (a) on the sprocket

are deeper than approx. 0.5 mm (0.02 in) since this would reduce the service life of the saw chain. You can use a gauge (special accessory) to check the depth of the wear marks

Using two saw chains in alternation helps preserve the chain sprocket.

STIHL recommends the use of original STIHL chain sprockets.

The chain sprocket is driven via a friction clutch. Have the chain sprocket replaced by an authorized dealer.

STIHL recommends that maintenance and repair work be carried out only by authorized STIHL dealers.

Maintaining and Sharpening the Saw Chain

Cutting effortlessly with a correctly sharpened chain

A properly sharpened chain slices through wood effortlessly and requires very little feed pressure.

Do not work with a dull or damaged chain as it will increase the physical effort required, produce unsatisfactory results and a higher rate of wear.

N Clean the chain. N Check the chain for cracks in the

0000097198_001

links and damaged rivets.

N Replace any damaged or worn

parts of the chain and match the new parts to the shape and size of the original parts.

Carbide-tipped saw chains (Duro) are particularly wear resistant. STIHL recommends you have your chain resharpened by a STIHL servicing dealer.

WARNING

It is absolutely essential to comply with the angles and dimensions specified below. If the saw chain is incorrectly sharpened – and in particular if the depth gauge is set too low – there is an increased risk of kickback, with resulting risk of injury.

The saw chain cannot be locked in place on the guide bar. Therefore, it is best to remove the chain from the bar and resharpen it on a workshop sharpening tool (FG 2, HOS, USG).

HT 105, HT 134, HT 135

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689BA027 KN

689BA021 KN

689BA025 KN

001BA203 KN

Chain pitch

The chain pitch (a) is marked on the depth gauge end of each cutter.

Mark (a) Chain pitch

inch mm 7 1/4 P 6,35 1 or 1/4 1/4 6,35 6, P or PM 3/8 P 9,32 2 or 325 0.325 8,25 3 or 3/8 3/8 9,32

Select file diameter according to chain pitch – see table “Sharpening Tools”.

You must observe certain angles when resharpening the chain cutter.

Filing and side plate angles

A Filing angle

HT 105, HT 134, HT 135

STIHL saw chains are sharpened to a filing angle of 30°. Exceptions are ripping chains with a filing angle of 10°. Ripping chains have an X in their designations.

B Side plate angle

The correct side plate angle is obtained automatically if you use the prescribed file holder and file diameter.

Cutter shapes Angle (°)

Micro = semi chisel cutter,

30 75 e.g. 63 PM3, 26 RM3, 71 PM3

Super = chisel cutter, e.g.

30 60 63 PS3, 26 RS, 36 RS3

Ripping chain, e.g.

10 75 63 PMX, 36 RMX

The angles must be the same on all cutters. If the angles are uneven: Chain will run roughly, not in a straight line, wear quickly and finally break.

File holder

N Use a file holder

A file holder must be used for manual resharpening (see table "Sharpening Tools"). The correct filing angles are marked on the file holder.

Use only special saw chain sharpening files. Other files have the wrong shape and cut.

For checking angles

Use a STlHL filing gauge (special accessory, see table "Sharpening Tools"). This is a universal tool for checking the filing and side plate angles, depth gauge setting, cutter length and groove depth. It also cleans the guide bar groove and oil inlet holes.

File correctly

N Select sharpening tools according

to chain pitch.

N If you use an FG 2, HOS or USG

sharpener: Remove the chain from the bar and sharpen according to the instructions supplied with the tool.

N Clamp the bar in a vise if necessary. N Sharpen the chain frequently, take

away as little metal as possible – two or three strokes of the file are usually enough.

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689BA018 KN

90°

689BA043 KN

689BA023 KN

689BA061 KN

N Hold the file horizontally (at a right

angle to the side of the guide bar) and file according to the angles marked on the file holder. Rest the file holder on the top plate and depth gauge.

N Always file from the inside to the

outside of the cutter.

N The file only sharpens on the

forward stroke – lift the file off the cutter on the backstroke.

N Avoid touching the tie straps and

drive links with the file.

N Rotate the file at regular intervals

while filing to avoid one-sided wear.

N Use a piece of hardwood to remove

burrs from the cutting edge.

N Check angles with the filing gauge.

All cutters must be the same length.

If the cutters are not the same length, they will have different heights. This makes the chain run roughly and can cause it to break.

N Find the shortest cutter and then file

all other cutters back to the same length. It is best to have this work done by a servicing dealer on an electric grinder.

Depth gauge setting

The depth gauge determines the height at which the cutter enters the wood and thus the thickness of the chip removed.

a Specified distance or setting

between depth gauge and cutting edge.

This setting may be increased by 0.2 mm (0.008") for cutting softwood in the mild weather season – no frost.

Chain pitch Depth gauge

Setting (a) inch (mm) mm (inch) 1/4 P (6,35) 0,45 (0.018) 1/4 (6,35) 0,65 (0.026) 3/8 P (9,32) 0,65 (0.026)

0.325 (8,25) 0,65 (0.026) 3/8 (9,32) 0,65 (0.026)

Lowering depth gauges

The depth gauge setting is reduced when the chain is sharpened.

N Use a filing gauge to check the

setting every time you sharpen the chain.

N Place a filing gauge (1) that

matches the chain pitch on the chain and press it against the cutter – if the depth gauge projects from the filing gauge, the depth gauge has to be lowered.

Saw chains with humped drive link (2) – upper part of humped drive link (2) (with service mark) is lowered along with the depth gauge.

WARNING

The other parts of the humped drive link must not be filed since this may increase the kickback tendency of the power tool.

HT 105, HT 134, HT 135

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689BA051 KN

689BA044 KN

689BA052 KN

N File down the depth gauge until it is

level with the filing gauge.

N File the top of the depth gauge

parallel to the stamped service marking (see arrow) – but do not lower the highest point of the depth gauge in this process.

N Place the filing gauge on the chain –

the highest point of the depth gauge must be level with the filing gauge.

N After sharpening, clean the chain

thoroughly, remove filings or grinding dust – lubricate the chain

WARNING

The kickback tendency of the machine is increased if the depth gauges are too low.

thoroughly.

N Before a long out-of-service period,

clean the chain and store it in a welloiled condition.

Sharpening Tools (special accessories) Chain pitch Round file ^ Round file File holder Filing gauge Flat file Sharpening kit inch (mm) mm (inch) Part No. Part No. Part No. Part No. Part No. 1/4 P (6,35) 3,2 (1/8) 5605 771 3206 5605 750 4300 0000 893 4005 0814 252 3356 5605 007 1000 1/4 (6,35) 4,0 (5/32) 5605 772 4006 5605 750 4327 1110 893 4000 0814 252 3356 5605 007 1027 3/8 P (9,32) 4,0 (5/32) 5605 772 4006 5605 750 4327 1110 893 4000 0814 252 3356 5605 007 1027

0.325 (8,25) 4,8 (3/16) 5605 772 4806 5605 750 4328 1110 893 4000 0814 252 3356 5605 007 1028 3/8 (9,32) 5,2 (13/64) 5605 772 5206 5605 750 4329 1110 893 4000 0814 252 3356 5605 007 1029

consisting of file holder with round file, flat file and filing gauge

HT 105, HT 134, HT 135

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Maintenance and Care

The following intervals apply to normal operating conditions only. If your daily working time is longer or operating conditions are difficult (very dusty work area, etc.), shorten the specified intervals accordingly.

before starting work

after finishing work or daily

after each refueling stop

weekly

monthly

every 12 months

if problem

if damaged

as required

Complete machine

Control handle Check operation XX

Air filter

Manual fuel pump (if fitted)

Pickup body (filter) in fuel tank

Fuel tank Clean XX

Carburetor

Spark plug

Cooling inlets

Cylinder fins Have cleaned by servicing dealer

Valve clearance

Combustion chamber Have cleaned after every 150 hours of

All accessible screws and nuts (not adjusting screws)

Visual inspection (condition, leaks) XX

Clean X

Clean XX

Replace

Check X

Have repaired by servicing dealer

Have checked by servicing dealer

Have replaced by servicing dealer

Check idle adjustment – chain must not rotate

Adjust idle speed X

Readjust electrode gap X

Replace after every 100 operating hours

Visual inspection X

Clean X

If power is low or cranking effort very high, have valve clearance checked and, if necessary, adjusted by servicing

dealer

operation by servicing dealer

Retighten X

XXX

HT 105, HT 134, HT 135

Page 33

before starting work

after finishing work or daily

after each refueling stop

weekly

monthly

every 12 months

if problem

Antivibration elements

Chain lubrication Check X

Saw chain

Guide bar

Chain sprocket

Safety labels Replace X

STIHL recommends an authorized STIHL servicing dealer.

Only if there is a noticeable loss of engine power

Check XXX

Have replaced by servicing dealer

Inspect, also check sharpness XX

Check chain tension. XX

Sharpen X

Check (wear, damage) X

Clean and turn over XX

Deburr X

Replace XX

Check X

Have replaced by servicing dealer

English

if damaged

as required

HT 105, HT 134, HT 135

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Minimize Wear and Avoid Damage

Observing the instructions in this manual helps reduce the risk of unnecessary wear and damage to the power tool.

The power tool must be operated, maintained and stored with the due care and attention described in this owner's manual.

The user is responsible for all damage caused by non-observance of the safety precautions, operating and maintenance instructions in this manual. This includes in particular:

– Alterations or modifications to the

product not approved by STIHL.

– Using tools or accessories which

are neither approved or suitable for the product or are of a poor quality.

– Using the product for purposes for

which it was not designed.

– Using the product for sports or

competitive events.

– Consequential damage caused by

continuing to use the product with defective components.

Maintenance Work

All the operations described in the "Maintenance Chart" must be performed on a regular basis. If these maintenance operations cannot be performed by the owner, they should be performed by a servicing dealer.

STIHL recommends that you have servicing and repair work carried out exclusively by an authorized STIHL

servicing dealer. STIHL dealers are regularly given the opportunity to attend training courses and are supplied with the necessary technical information.

If these maintenance operations are not carried out as specified, the user assumes responsibility for any damage that may occur. Among other parts, this includes:

– Damage to the engine due to

neglect or deficient maintenance (e.g. air and fuel filters), incorrect carburetor adjustment or inadequate cleaning of cooling air inlets (intake ports, cylinder fins).

– Corrosion and other consequential

damage resulting from improper storage.

– Damage to the machine resulting

from the use of poor quality replacement parts.

Parts Subject to Wear and Tear

Some parts of the power tool are subject to normal wear and tear even during regular operation in accordance with instructions and, depending on the type and duration of use, have to be replaced in good time. Among other parts, this includes:

– Saw chain, guide bar

– Drive components (clutch, clutch

drum, chain sprocket)

– Filters (air, oil, fuel)

– Starter mechanism

– Spark plug

– Components of antivibration system

HT 105, HT 134, HT 135

Page 35

Main Parts

28 29

0000097199_002

English

1 Handle hose (HT 134) 2 Rigid Shaft (HT 134) 3 Carrying ring (HT 134) 4 Stop switch 5 Throttle trigger lockout 6 Choke lever 7 Air filter cover 8 Fuel tank 9 Throttle trigger 10 Clip (HT 105, HT 135) 11 Handle hose (HT 105, HT 135) 12 Telescopic shaft (HT 105, HT 135) 13 Oil tank cap 14 Oilomatic saw chain 15 Guide bar 16 Oil tank 17 Clamp nut (HT 105, HT 135) 18 Chain sprocket cover 19 Hook 20 Chain scabbard 21 Chain tensioner 22 Gauge bar 23 Chain sprocket 24 Machine support 25 Fuel tank 26 Fuel cap 27 Carburetor adjusting screws 28 Manual fuel pump 29 Starter grip 30 Cover 31 Muffler # Serial number

HT 105, HT 134, HT 135

Page 36

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Specifications

Engine

STIHL single cylinder four-stroke engine with mixture lubrication

HT 105

Displacement: 31.4cm Cylinder bore: 40 mm Piston stroke: 25 mm Engine power to

ISO 8893: Idle speed to ISO

11680: 2800 ± 50 rpm Cut-off speed (nomi-

nal value): 9500 rpm Valve clearance Inlet valve: 0.10 mm Exhaust valve: 0.10 mm

HT 134, HT 135

Displacement: 36.3cm Cylinder bore: 43 mm Piston stroke: 25 mm Engine power to

ISO 8893: Idle speed to ISO

11680: 2800 ± 50 rpm Cut-off speed (nomi-

nal value): 9500 rpm Valve clearance Inlet valve: 0.10 mm Exhaust valve: 0.10 mm

1.05 kW (1.4 hp) at 8000 1/min

1.4 kW (1.9 hp) at 8500 1/min

Ignition system

Electronic magneto ignition

Spark plug (suppressed):

HT 105: Bosch USR 7 AC HT 134, HT 135: NGK CMR 6 H Electrode gap: 0.5 mm

Fuel system

All-position diaphragm carburetor with integral fuel pump

Fuel tank capacity: 530 cm

(0.53 l)

Chain lubrication

Fully automatic, speed-controlled oil pump with rotary piston

Oil tank capacity: 220 cm3 (0.22 l)

Weight

dry, without cutting attachment HT 105: 7.9 kg HT 134: 6.0 kg HT 135: 7.9 kg

Cutting attachment HT 105

The actual cutting length may be less than the specified cutting length.

Rollomatic E Mini / Rollo Light 01 guide bar

Blade length: 25, 30, 35 cm Pitch: 1/4" P (6.35 mm) Groove width: 1.1 mm

Saw chain 1/4" P

Picco Micro3 (71PM3) Type 3670 Pitch: 1/4" P (6.35 mm) Drive link gauge: 1.1 mm

Chain sprocket

8-tooth for 1/4" P

Cutting attachment HT 134

The actual cutting length may be less than the specified cutting length.

Rollomatic E Mini / Rollo Light 01 guide bar

Blade length: 25, 30, 35 cm Pitch: 3/8" P (9.32 mm) Groove width: 1.1 mm

Saw chain 3/8" P

Picco Micro Mini 3 (61 PMM3) Type 3610

Pitch: 3/8" P (9.32 mm) Drive link gauge: 1.1 mm

Chain sprocket

7-tooth for 3/8" P

HT 105, HT 134, HT 135

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Cutting attachment HT 135

The actual cutting length may be less than the specified cutting length.

Rollomatic E Mini / Rollo Light 01 guide bar

Blade length: 25, 30, 35 cm Pitch: 3/8" P (9.32 mm) Groove width: 1.1 mm

Rollomatic E Mini / Rollo Light 01 guide bar

Blade length: 25, 30, 35 cm Pitch: 1/4" P (6.35 mm) Groove width: 1.1 mm

Saw chain 3/8" P

Picco Micro Mini 3 (61 PMM3) Type 3610

Pitch: 3/8" P (9.32 mm) Drive link gauge: 1.1 mm

Saw chain 1/4" P

Picco Micro3 (71PM3) Type 3670 Pitch: 1/4" P (6.35 mm) Drive link gauge: 1.1 mm

Chain sprocket

7-tooth for 3/8" P 8-tooth for 1/4" P

Sound and Vibration Levels

Noise and vibration data measurements include idling and rated maximum speed with the same duration of exposure.

For further details on compliance with Vibration Directive 2002/44/EC, see

www.stihl.com/vib

Sound pressure level L

peq

accordance with ISO 22868

HT 105: 92 dB(A) HT 134: 92 dB(A) HT 135 3/8" P: 93 dB(A) HT 135 1/4" P: 92 dB(A)

Sound power level L

in accordance

with ISO 22868

HT 105: 108 dB(A) HT 134: 109 dB(A) HT 135 3/8" P: 109 dB(A) HT 135 1/4" P: 109 dB(A)

Vibration level a

in accordance with

hv,eq

ISO 22867

HT 105 Shaft compressed Shaft: 5.0 m/s Control handle: 5.5 m/s

Shaft extended Shaft: 5.0 m/s Control handle: 5.0 m/s

HT 134 Shaft: HT 134 3.2 m/s

Control handle: HT 134 3.2 m/s

HT 135 Shaft compressed Shaft: 4.3 m/s Control handle: 4.8 m/s

Shaft extended Shaft: 4.8 m/s Control handle: 5.0 m/s

The K-factor in accordance with Directive 2006/42/EC is 2.0 dB(A) for the sound pressure level and sound power level; the K-factor in accordance with Directive 2006/42/EC is 2.0 m/s

for the vibration level.

REACH

REACH is an EC regulation and stands for the Registration, Evaluation, Authorization and Restriction of Chemical substances.

For information on compliance with the REACH regulation (EC) No. 1907/2006 see

www.stihl.com/reach

Exhaust Emissions

The CO

value measured in the EU type

approval procedure is specified at

www.stihl.com/co2

in the product-specific technical data.

The measured CO

value was

determined on a representative engine in accordance with a standardized test procedure under laboratory conditions and does not represent either an explicit or implied guarantee of the performance of a specific engine.

The applicable exhaust emission requirements are fulfilled by the intended usage and maintenance

HT 105, HT 134, HT 135

Page 38

English

000BA073 KN

described in this User Manual. The operating license shall be void if the engine is modified in any way.

Maintenance and Repairs Disposal

Users of this machine may only carry out the maintenance and service work described in this user manual. All other repairs must be carried out by a servicing dealer.

When repairing the machine, only use replacement parts which have been approved by STIHL for this power tool or are technically identical. Only use highquality replacement parts in order to avoid the risk of accidents and damage to the machine.

STIHL recommends the use of original STIHL replacement parts.

Original STIHL parts can be identified by the STIHL part number, the { logo and the STIHL parts symbol K (the symbol may appear alone on small parts).

Contact the local authorities or your STIHL servicing dealer for information on disposal.

Improper disposal can be harmful to health and pollute the environment.

N Take STIHL products including

packaging to a suitable collection point for recycling in accordance with local regulations.

N Do not dispose with domestic

waste.

HT 105, HT 134, HT 135

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English

EC Declaration of Conformity

ANDREAS STIHL AG & Co. KG Badstr. 115 D-71336 Waiblingen

Germany

declares under our sole responsibility that

Designation: Pole pruner Make: STIHL Series: HT 105

HT 134 HT 135

Serial identification number: 4182

Displacement HT 105: 31.4 cm HT 134: 36.3 cm HT 135: 36.3 cm

conforms to the relevant provisions of Directives 2011/65/EU, 2006/42/EC and 2014/30/EU and has been developed and manufactured in compliance with the following standards in the versions valid on the date of production:

EN ISO 11680-1, EN 55012, EN 61000-6-1

The EC type examination was carried out by

DPLF Deutsche Prüf- und Zertifizierungsstelle für Land- und Forsttechnik GbR (NB 0363) Spremberger Straße1 D-64823 Groß-Umstadt

Certification No. HT 105: K-EG 2020/9491 HT 134: K-EG 2020/9493 HT 135 3/8" P: K-EG 2020/9495 HT 135 1/4" P: K-EG 2020/9495

Technical documents deposited at:

ANDREAS STIHL AG & Co. KG Produktzulassung

The year of manufacture and serial number are applied to the product.

Done at Waiblingen, 09.02.2021

ANDREAS STIHL AG & Co. KG

Dr. Jürgen Hoffmann

Director Product Certification & Regulatory Affairs

UKCA Declaration of Conformity

ANDREAS STIHL AG & Co. KG Badstr. 115 D-71336 Waiblingen

Germany

declares under our sole responsibility that

Designation: Pole pruner Make: STIHL Series: HT 105

HT 135

Serial identification number: 4182

Displacement HT 105: 31.4 cm HT 135: 36.3 cm

complies with the relevant provisions of the UK regulations The Restriction of the Use of Certain Hazardous Substances in Electrical and Electronic Equipment Regulations 2012, Supply of Machinery (Safety) Regulations 2008, and Electromagnetic Compatibility Regulations 2016 and has been developed and manufactured in accordance with the versions of the following standards valid on the date of manufacture:

EN ISO 11680-1, EN 55012, EN 61000-6-1

The type examination was carried out by

Intertek Testing & Certification Ltd, Academy Place, 1 – 9 Brook Street, Brentwood Essex, CM14 5NQ, United Kingdom

HT 105, HT 134, HT 135

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Certification No. HT 105: ITS UK MCR 25 HT 135 3/8" P: ITS UK MCR 26 HT 135 1/4" P: ITS UK MCR 26

Technical documents deposited at:

ANDREAS STIHL AG & Co. KG

The year of manufacture and serial number are applied to the product.

Waiblingen, 31.03.2022

ANDREAS STIHL AG & Co. KG

Dr. Jürgen Hoffmann

Director Product Certification & Regulatory Affairs

HT 105, HT 134, HT 135

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English

HT 105, HT 134, HT 135

Page 42

English

HT 105, HT 134, HT 135

Page 43

Page 44

0458-699-0121-B

englisch

www.stihl.com

*04586990121B*

0458-699-0121-B

Stihl HT 105, HT 134, HT 135 Instruction Manual

Specifications and Main Features

Frequently Asked Questions

User Manual