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Operator’s manual (EPA II)
334T 338XPT
Please read the operator’s manual carefully and make sure you understand the instructions before using the machine.
English
KEY TO SYMBOLS
Symbols on the machine:
WARNING! Chain saws can be dangerous! Careless or improper use can result in serious or fatal injury to the operator or others.
Please read the operator’s manual carefully and make sure you understand the instructions before using the machine.
Always wear:
• Approved protective helmet
• Approved hearing protection
•Protective goggles or a visor
Both of the operator′s hands must be used to operate the chain saw.
Never operate a chain saw holding it with one hand only.
Never let the guide bar tip come in contact with any object.
WARNING! Kickback may occur when the nose or tip of the guide bar touches an object, and cause a lightning fast reverse reaction, kicking the guide bar up and towards the operator. May cause serious personal injury.
Other symbols/decals on the machine refer to special certification requirements for certain markets.
Symbols in the operator’s manual:
Switch off the engine by moving the stop switch to the STOP position before carrying out any checks or maintenance.
Working position
Choke
Always wear approved protective gloves.
Regular cleaning is required.
Visual check.
Protective goggles or a visor must be worn.
Refuelling.
Filing with oil and adjusting oil flow.
The chain brake must be engaged when the chain saw is started.
WARNING! Kickback may occur when the nose or tip of the guide bar touches an object, and cause a lightning fast reverse reaction, kicking the guide bar up and towards the operator. May cause serious personal injury.
You will find the following labels on your chain saw:
EPA II
The Emissions Compliance Period referred to on the Emission Compliance label indicates the number of operating hours for which the engine has been shown to meet Federal emissions requirements. Category C = 50 hours, B = 125 hours, and A = 300 hours.
Maintenance, replacement, or repair of the emission control devices and system may be performed by any nonroad engine repair establishment or individual.
2 – English
CONTENTS
Contents |
|
KEY TO SYMBOLS |
|
Symbols on the machine: ............................................. |
2 |
Symbols in the operator’s manual: ............................... |
2 |
CONTENTS |
|
Contents ...................................................................... |
3 |
INTRODUCTION |
|
Dear customer! ............................................................ |
4 |
WHAT IS WHAT? |
|
What is what on the chain saw? .................................. |
5 |
GENERAL SAFETY PRECAUTIONS |
|
Before using a new chain saw ..................................... |
6 |
Important ...................................................................... |
6 |
Always use common sense ......................................... |
6 |
Personal protective equipment ..................................... |
7 |
Machine′s safety equipment ........................................ |
7 |
Cutting equipment ........................................................ |
10 |
ASSEMBLY |
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Fitting the bar and chain .............................................. |
15 |
FUEL HANDLING |
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Fuel .............................................................................. |
16 |
Fueling ......................................................................... |
17 |
Fuel safety ................................................................... |
17 |
STARTING AND STOPPING |
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Starting and stopping ................................................... |
18 |
WORKING TECHNIQUES |
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Before use: ................................................................... |
20 |
General working instructions ....................................... |
20 |
How to avoid kickback .................................................. |
26 |
MAINTENANCE |
|
General ........................................................................ |
27 |
Carburetor adjustment ................................................. |
27 |
Checking, maintaining and servicing chain saw safety |
|
equipment .................................................................... |
28 |
Muffler .......................................................................... |
29 |
Starter .......................................................................... |
30 |
Air filter ......................................................................... |
31 |
Spark plug .................................................................... |
31 |
Lubricating the bar tip sprocket .................................... |
31 |
Adjustment of the oil pump .......................................... |
31 |
Cooling system ............................................................ |
32 |
Maintenance schedule ................................................. |
33 |
TECHNICAL DATA |
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Technical data .............................................................. |
34 |
Bar and chain combinations, model 334T .................... |
35 |
Bar and chain combinations, model 338XPT ............... |
35 |
FEDERAL EMISSION CONTROL WARRANTY |
|
STATEMENT |
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YOUR WARRANTY RIGHTS AND OBLIGATIONS ..... |
36 |
AMERICAN STANDARD SAFETY PRECAUTIONS |
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Safety precautions for chain saw users ....................... |
37 |
English – 3
INTRODUCTION
Dear customer!
Congratulations on your choice to buy a Husqvarna product! Husqvarna is based on a tradition that dates back to 1689, when the Swedish King Karl XI ordered the construction of a factory on the banks of the Huskvarna River, for production of muskets. The location was logical, since water power was harnessed from the Huskvarna River to create the water-powered plant. During over 300 years of continuous operation, the Husqvarna factory has produced a lot of different products, from wood stoves to modern kitchen appliances, sewing machines, bicycles, motorcycles etc. In 1956, the first motor driven lawn mowers appeared, followed by chain saws in 1959, and it is within this area Husqvarna is working today.
Today Husqvarna is one of the leading manufacturers in the world of forest and garden products, with quality as our highest priority. We develop, manufacture and market high quality motor driven products for forestry and gardening as well as for building and construction industry.
Your purchase gives you access to professional help with repairs and service whenever this may be necessary. If the retailer who sells your machine is not one of our authorized dealers, ask for the address of your nearest servicing dealer.
It is our wish that you will be satisfied with your product and that it will be your companion for a long time. Think of this operator′s manual as a valuable document. By following its′ content (using, service, maintenance etc) the life span and the second-hand value of the machine can be extended. If you ever lend or sell this machine, make sure that the borrower or buyer gets the operator′s manual, so they will also know how to properly maintain and use it.
Thank you for using a Husqvarna product.
Husqvarna AB has a policy of continuous product development and therefore reserves the right to modify the design and appearance of products without prior notice.
For customer assistance call: 704-921-7000 or contact us at our website: www.husqvarna.com
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WHAT IS WHAT?
What is what on the chain saw?
1Filter cover
2Adjuster screws carburetor
3Starter
4Fuel tank
5Chain oil tank
6Chain tensioning screw (334T)
7Bumper spike
8Front hand guard
9Information and warning decal
10Stop and choke control: Ignition on/off switch
Choke control/Start throttle lock Working position
11Air purge
12Rear handle
13Fixing eye for safety line
14Spark plug cap
15Starter handle
16Front handle
17Oil pump adjustment screw
18Throttle lock (Prevents accidental operation of throttle control.)
19Throttle control
20Bar
21Chain
22Bar tip sprocket
23Chain catcher (Catches chain if it jumps or breaks.)
24Chain tensioning screw (338XPT)
25Product and serial number plate
26Clutch cover with built-in chain brake.
27Muffler
28Bar guard
29Combination spanner
30Operator’s manual (EPA)
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GENERAL SAFETY PRECAUTIONS
Before using a new chain saw
•Please read this manual carefully.
•Check that the cutting equipment is correctly fitted and adjusted. See instructions under the heading Assembly.
•Refuel and start the chain saw. See the instructions under the headings Fuel Handling and Starting and Stopping.
•Do not use the chain saw until sufficient chain oil has reached the chain. See instructions under the heading Lubricating cutting equipment.
•Long-term exposure to noise can result in permanent hearing impairment. So always use approved hearing protection.
WARNING! Under no circumstances may the
!design of the machine be modified without the permission of the manufacturer. Always use genuine accessories. Non-authorized modifications and/or accessories can result in serious personal injury or the death of the operator or others. Your warranty may not cover damage or liability caused by the use of non-authorized accessories or replacement parts.
WARNING! A chain saw is a dangerous tool
!if used carelessly or incorrectly and can cause serious, even fatal injuries. It is very important that you read and understand the contents of this operator’s manual.
WARNING! The inside of the muffler contain
!chemicals that may be carcinogenic. Avoid contact with these elements in the event of a damaged muffler.
WARNING! Long term inhalation of the
!engine’s exhaust fumes, chain oil mist and dust from sawdust can represent a health risk.
Important
IMPORTANT!
The machine is only designed for cutting wood.
You should only use the saw with the bar and chain combinations we recommend in the chapter Technical data.
Never use the machine if you are fatigued, while under the influence of alcohol or drugs, medication or anything that could affect your vision, alertness, coordination or judgement.
Wear personal protective equipment. See instructions under the heading Personal protective equipment.
Do not modify this product or use it if it appears to have been modified by others.
Never use a machine that is faulty. Carry out the checks, maintenance and service instructions described in this manual. Some maintenance and service measures must be carried out by trained and qualified specialists. See instructions under the heading Maintenance.
Never use any accessories other than those recommended in this manual. See instructions under the headings Cutting equipment and Technical data.
CAUTION! Always wear protective glasses or a face visor to reduce the risk of injury from thrown objects. A chain saw is capable of throwing objects, such as wood chips, small pieces of wood, etc, at great force.This can result in serious injury, especially to the eyes.
WARNING! Running an engine in a confined
!or badly ventilated area can result in death due to asphyxiation or carbon monoxide poisoning.
WARNING! Faulty cutting equipment or the
!wrong combination of bar and saw chain increases the risk of kickback! Only use the bar/saw chain combinations we recommend, and follow the filing instructions. See instructions under the heading Technical data.
Always use common sense
It is not possible to cover every conceivable situation you can face when using a chain saw. Always exercise care and use your common sense. Avoid all situations which you consider to be beyond your capability. If you still feel uncertain about operating procedures after reading these instructions, you should consult an expert before continuing. Do not hesitate to contact your dealer or us if you have any questions about the use of the chain saw. We will willingly be of service and provide you with advice as well as help you to use your chain saw both efficiently and safely. Attend a training course in
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GENERAL SAFETY PRECAUTIONS
chain saw usage if possible. Your dealer, forestry school or your library can provide information about which training materials and courses are available.
Work is constantly in progress to improve the design and technology - improvements that increase your safety and efficiency. Visit your dealer regularly to see whether you can benefit from new features that have been introduced.
Personal protective equipment
WARNING! Most chain saw accidents
!happen when the chain touches the operator. You must use approved personal protective equipment whenever you use the machine. Personal protective equipment cannot eliminate the risk of injury but it will reduce the degree of injury if an accident does happen. Ask your dealer for help in choosing the right equipment.
•Approved protective helmet
•Hearing protection
•Protective goggles or a visor
•Gloves with saw protection
•Trousers with saw protection
•Boots with saw protection, steel toe-cap and non-slip sole
•Always have a first aid kit nearby.
•Fire Extinguisher and Shovel
Generally clothes should be close-fitting without restricting your freedom of movement.
IMPORTANT! Sparks can come from the muffler, the bar and chain or other sources. Always have fire extinguishing tools available if you should need them. Help prevent forest fires.
Machine′s safety equipment
In this section the machine’s safety features and their function are explained. For inspection and maintenance see instructions under the heading Checking, maintaining and servicing chain saw safety equipment. See instructions under the heading, What is what?, to find where these parts are located on your machine.
The life span of the machine can be reduced and the risk of accidents can increase if machine maintenance is not carried out correctly and if service and/or repairs are not carried out professionally. If you need further information please contact your nearest servicing dealer.
WARNING! Never use a machine with
!defective safety components. Safety equipment must be inspected and maintained. See instructions under the heading Checking, maintaining and servicing chain saw safety equipment. If your machine does not pass all the checks, take the saw to a servicing dealer for repair.
Chain brake and front hand guard
Your chain saw is equipped with a chain brake that is designed to stop the chain if you get a kickback. The chain brake reduces the risk of accidents, but only you can prevent them.
Take care when using your saw and make sure the kickback zone of the bar never touches any object.
•The chain brake (A) can either be activated manually (by your left hand) or automatically by the inertia release mechanism.
•The brake is applied when the front hand guard (B) is pushed forwards.
B
B
A
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GENERAL SAFETY PRECAUTIONS
•This movement activates a spring-loaded mechanism that tightens the brake band (C) around the engine drive system (D) (clutch drum).
•The front hand guard is not designed solely to activate the chain brake. Another important feature is that it reduces the risk of the chain hitting your left hand if you lose grip of the front handle.
•The chain brake must be engaged when the chain saw is started to prevent the saw chain from rotating.
•Use the chain brake as a ”parking brake” when starting and when moving over short distances, to reduce the risk of moving chain accidentally hitting your leg or anyone or anything close by.
•To release the chain brake pull the front hand guard backwards, towards the front handle.
•Kickback can be very sudden and violent. Most kickbacks are minor and do not always activate the chain brake. If this happens you should hold the chain saw firmly and not let go.
•The way the chain brake is activated, either manually or automatically by the inertia release mechanism, depends on the force of the kickback and the position of the chain saw in relation to the object that the kickback zone of the bar strikes.
If you get a violent kickback while the kickback zone of the bar is farthest away from you the chain brake is designed to be activated by the inertia in the kickback direction.
If the kickback is less violent or the kickback zone of the bar is closer to you the chain brake is designed to be activated manually by the movement of your left hand.
•In the felling position the left hand is in a position that makes manual activation of the chain brake impossible. With this type of grip, that is when the left hand is placed so that it cannot affect the movement of the front hand guard, the chain brake can only be activated by the inertia action.
Will my hand always activate the chain brake during a kickback?
No. It takes a certain force to move the hand guard forward. If your hand only lightly touches the front guard or slips over it, the force may not be enough to trigger the chain brake. You should also maintain a firm grip of the chain saw handles while working. If you do and experience a kickback, your hand may never leave the front handle and will not activate the chain brake, or the chain brake will only activate after the saw has swung around a considerable distance. In such instances, the chain brake might not have enough time to stop the saw chain before it touches you.
There are also certain positions in which your hand cannot reach the front hand guard to activate the chain brake; for example, when the saw chain is held in felling position.
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GENERAL SAFETY PRECAUTIONS
Will my inetria activated chain brake always activate during kickback in the event of a kickback?
No. First your brake must be in working order. Second the kickback must be strong enough to activate the chain brake. If the chain brake is too sensitive it would activate all the time which would be a nuisance.
Will my chain brake always protect me from injury in the event of a kickback?
No. First, the chain brake must be in working order to provide the intended protection. Second, it must be activated during the kickback as described above to stop the saw chain. Third, the chain brake may be activated but if the bar is to close to you the brake might not have enough time to slow down and stop the chain before the chain saw hits you.
Only you and proper working technique can eliminate kickback and its danger.
Throttle lock
The throttle lock is designed to prevent accidental operation of the throttle control. When you press the lock (A) (i.e. when you grasp the handle) it releases the throttle control (B).
When you release the handle the throttle control and the throttle lock both move back to their original positions. This arrangement means that the throttle control is automatically locked at the idle setting.
A
B
Chain catcher
The chain catcher is designed to catch the chain if it snaps or jumps off. This should not happen if the chain is properly tensioned (see instructions under the heading Assembly) and if the bar and chain are properly serviced and maintained (see instructions under the heading General working instructions).
Vibration damping system
Your machine is equipped with a vibration damping system that is designed to reduce vibration and make operation easier.
The machine′s vibration damping system reduces the transfer of vibration between the engine unit/cutting equipment and the machine′s handle unit.
The body of the chain saw, including the cutting equipment, is insulated from the handles by vibration damping units.
Cutting hardwoods (most broadleaf trees) creates more vibration than cutting softwoods (most conifers). Cutting with cutting equipment that is blunt or faulty (wrong type or badly sharpened) will increase the vibration level.
WARNING! Overexposure to vibration can
!lead to circulatory damage or nerve damage in people who have impaired circulation. Contact your doctor if you experience symptoms of overexposure to vibration. Such symptoms include numbness, loss of feeling, tingling, pricking, pain, loss of strength, changes in skin colour or condition.These symptoms normally appear in the fingers, hands or wrists. These symptoms may be increased in cold temperatures.
Stop switch
Use the stop switch to switch off the engine.
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GENERAL SAFETY PRECAUTIONS
Muffler
The muffler is designed to keep noise levels to a minimum and to direct exhaust fumes away from the user.
WARNING! The exhaust fumes from the
!engine are hot and may contain sparks which can start a fire. Never start the machine indoors or near combustible material!
In areas with a hot, dry climate there is a high risk of fires. These areas are sometimes subject to government rules requiring among other things the muffler must be equipped with an approved type of spark arrestor mesh.
CAUTION! The muffler gets very hot during and after use. This also applies during idling. Be aware of the fire hazard, especially when working near flammable substances and/ or vapours.
WARNING! Never use a saw without a
!muffler, or with a damaged muffler. A damaged muffler may substantially increase the noise level and the fire hazard. Keep fire fighting equipment handy. If a spark arrestor screen is required in your area, never use the saw without or with a broken spark arrestor screen.
Cutting equipment
This section describes how to choose and maintain your cutting equipment in order to:
•Reduce the risk of kickback.
•Reduce the risk of the saw chain breaking or jumping off the bar.
•Obtain optimal cutting performance.
•Extend the life of cutting equipment.
•Avoid increasing vibration levels.
General rules
•Only use cutting equipment recommended by us!
See instructions under the heading Technical data.
•Keep the chain’s cutting teeth properly sharpened! Follow our instructions and use the recommended file gauge. A damaged or badly sharpened chain increases the risk of accidents.
•Maintain the correct depth gauge setting! Follow our instructions and use the recommended depth gauge clearance. Too large a clearance increases the risk of kickback.
•Keep the chain properly tensioned! If the chain is slack it is more likely to jump off and lead to increased wear on the bar, chain and drive sprocket.
•Keep cutting equipment well lubricated and properly maintained! A poorly lubricated chain is more likely to break and lead to increased wear on the bar, chain and drive sprocket.
Cutting equipment designed to reduce kickback
WARNING! Faulty cutting equipment or the
!wrong combination of bar and saw chain increases the risk of kickback! Only use the bar/saw chain combinations we recommend, and follow the filing instructions. See instructions under the heading Technical data.
The only way to avoid kickback is to make sure that the kickback zone of the bar never touches anything.
By using cutting equipment with ”built-in” kickback reduction and keeping the chain sharp and well-maintained you can reduce the effects of kickback.
Bar
The smaller the tip radius the lower the chance of kickback.
Chain
A chain is made up of a number of links, which are available in standard and low-kickback versions.
IMPORTANT! No saw chain design eliminates the danger of kickback.
WARNING! Any contact with a rotating saw
!chain can cause extremely serious injuries.
Some terms that describe the bar and chain
To maintain the safety features of the cutting equipment, you should replace a worn or damaged bar or chain with a bar and chain combinations recommended by Husqvarna. See instructions under the heading Technical Data for a list of replacement bar and chain combinations we recommend.
10 – English
GENERAL SAFETY PRECAUTIONS
Bar
•Length (inches/cm)
•Number of teeth on bar tip sprocket (T).
•Chain pitch (inches). The spacing between the drive links of the chain must match the spacing of the teeth on the bar tip sprocket and drive sprocket.
•Number of drive links. The number of drive links is determined by the length of the bar, the chain pitch and the number of teeth on the bar tip sprocket.
•Bar groove width (inches/mm).The groove in the bar must match the width of the chain drive links.
•Chain oil hole and hole for chain tensioner. The bar must be matched to the chain saw design.
Chain
•Chain pitch (inches)
•Drive link width (mm/inches)
•Number of drive links.
Sharpening your chain and adjusting depth gauge setting
General information on sharpening cutting teeth
•Never use a blunt chain. When the chain is blunt you have to exert more pressure to force the bar through the wood and the chips will be very small. If the chain is very blunt it will produce wood powder and no chips or shavings.
•A sharp chain eats its way through the wood and produces long, thick chips or shavings.
•The cutting part of the chain is called the cutter and consists of a cutting tooth (A) and the depth gauge (B). The cutters cutting depth is determined by the difference in height between the two (depth gauge setting).
When you sharpen a cutting tooth there are four important factors to remember.
1Filing angle
2Cutting angle
3File position
4Round file diameter
It is very difficult to sharpen a chain correctly without the right equipment. We recommend that you use our file gauge. This will help you obtain the maximum kickback reduction and cutting performance from your chain.
See instructions under the heading Technical data for information about sharpening your chain.
WARNING! Departure from the sharpening
!instructions considerably increases the risk of kickback.
English – 11
GENERAL SAFETY PRECAUTIONS
Sharpening cutting teeth
To sharpen cutting teeth you will need a round file and a file gauge. See instructions under the heading Technical data for information on the size of file and gauge that are recommended for the chain fitted to your chain saw.
•Check that the chain is correctly tensioned. A slack chain will move sideways, making it more difficult to sharpen correctly.
•Always file cutting teeth from the inside face. Reduce the pressure on the return stroke. File all the teeth on one side first, then turn the chain saw and file the teeth on the other side.
•File all the teeth to the same length. When the length of the cutting teeth is reduced to 4 mm (0.16") the chain is worn out and should be replaced.
General advice on adjusting depth gauge setting
•When you sharpen the cutting tooth (A) the depth gauge setting (C) will decrease. To maintain optimal cutting performance the depth gauge (B) has to be filed down to achieve the recommended depth gauge setting.
See instructions under the heading Technical data to find the correct depth gauge setting for your particular chain.
WARNING! The risk of kickback is increased
!if the depth gauge setting is too large!
Adjustment of depth gauge setting
•The cutting teeth should be newly sharpened before adjusting the depth gauge setting. We recommend that you adjust the depth gauge setting every third time you sharpen the cutting teeth. NOTE! This recommendation assumes that the length of the cutting teeth is not reduced excessively.
•You will need a flat file and a depth gauge tool. We recommend that you use our depth gauge tool to acheive the correct depth gauge setting and bevel for the depth gauge.
•Place the depth gauge tool over the chain. Detailed information regarding the use of the depth gauge tool, will be found on the package for the depth gauge tool. Use the flat file to file off the tip of the depth gauge that protrudes through the depth gauge tool. The depth gauge setting is correct when you no longer feel resistance as you draw the file along the depth gauge tool.
Tensioning the chain
WARNING! A slack chain may jump off the
!bar and cause serious or even fatal injury.
The more you use a chain the longer it becomes. It is therefore important to adjust the chain regularly to take up the slack.
Check the chain tension every time you refuel. NOTE! A new chain has a running-in period during which you should check the tension more frequently.
Tension the chain as tightly as possible, but not so tight that you cannot pull it round freely by hand.
•Loosen the bar nut that holds the clutch cover and chain brake. Use the combination spanner.
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