Hitachi Koki CS 33EDTP, CS 33EDT User Manual

Model Modèle Modelo

CS 33EDT / CS 33EDTP

CS33EDTP

Chain Saw Tr on ço nn e us e Motosierra

SAFETY INSTRUCTIONS AND INSTRUCTION MANUAL

WARNING

IMPROPER OR UNSAFE use of this power tool can result in death or serious bodily injury!

This manual contains important information about product safety. Please read and understand this manual BEFORE operating the power tool. Please keep this manual available for other users and owners before they use the power tool. This manual should be stored in safe place.

INSTRUCTIONS DE SECURITE ET MODE D’EMPLOI

AVERTISSEMENT

Une utilisation INCORRECTE OU DANGEREUSE de cet outil motorisé peut entraîner la mort ou de sérieuses blessures corporelles ! Ce mode d’emploi contient d’importantes informations à propos de la sécurité de ce produit. Prière de lire et de comprendre ce mode d’emploi AVANT d’utiliser l’outil motorisé. Garder ce mode d’emploi à la disponibilité des autres utilisateurs et propriétaires avant qu’ils utilisent l’outil motorisé. Ce mode d’emploi doit être conservé dans un endroit sûr.

INSTRUCCIONES DE SEGURIDAD Y MANUAL DE INSTRUCCIONES

ADVERTENCIA

¡La utilización INAPROPIADA O PELIGROSA de esta herramienta eléctrica puede provocar lesiones graves o la muerte! Este manual contiene información importante sobre la seguridad del producto. Lea y comprenda este manual ANTES de utilizar la herramienta eléctrica. Guarde este manual para que puedan leerlo otras personas antes de utilizar la herramienta eléctrica. Este manual debe ser guardado en un lugar seguro.

English

MEANINGS OF SYMBOLS

NOTE: Some units do not carry them.

Symbols

WARNING

The following show symbols used for the machine. Be sure that you understand their meaning before use.

It is important that you read, fully understand and observe the following safety precautions and warnings. Careless or improper use of the unit may cause serious or fatal injury.

Read, understand and follow all warnings and instructions in this manual and on the unit.

Oﬀ /Stop

Emergency stop

Always wear eye, head and ear protectors when using this unit.

Warning, kickback danger. Be careful of possible sudden and accidental upward and/or backward motion of the guide bar.

One-handed usage not permitted. While cutting, hold saw ﬁ rmly with both hands with thumb ﬁ rmly locked around front handle.

Chain brake Carburetor adjustment - Low speed mixture

Choke - Run position (Open) Carburetor adjustment - High speed mixture

Choke - Choked position (Closed) Hot surface

On/Start

Contents

WHAT IS WHAT? ..............................................................................3

WARNINGS AND SAFETY INSTRUCTIONS .................................... 3

SPECIFICATIONS ............................................................................. 5

ASSEMBLY PROCEDURES ............................................................. 6

OPERATING PROCEDURES ............................................................ 7

MAINTENANCE .............................................................................. 11

Parts breakdown

Fuel and oil mixture

Chain oil ﬁ ll

Carburetor adjustment - Idle speed

WHAT IS WHAT?

1. Throttle trigger: Device activated by the operatorʼs ﬁ nger, for controlling the engine speed.

2. Throttle trigger lockout: Device that prevents the accidental operation of the throttle trigger until manually released.

3. Ignition switch: Device for allowing the engine to be started or stopped.

4. Oil tank cap: For closing the oil tank.

5. Recoil starter: Pull handle to start the engine.

6. Front handle: Support handle located at or towards the front of the engine housing.

7. Fuel tank cap: For closing the fuel tank.

8. Rear handle: Support handle located on the top of the engine housing.

9. Choke lever: Device for enriching the fuel/air mixture in the carburetor, to aid starting.

10. Priming pump: Device for supplying extra fuel, to aid starting.

11. Guide bar: The part that supports and guides the saw chain.

12. Saw chain: Chain, serving as a cutting tool.

13. Chain brake (Front hand guard): Device for stopping or locking the chain.

14. Attachment point: The part for suspending the unit by using a safety strap, carabineer or rope.

15. Chain catcher: device for restraining the saw chain.

16. Side case: Protective cover to the guide bar, saw chain, clutch and sprocket when the chain saw is in use.

17. Muﬄ er: Reduces engine exhaust noise and directs the exhaust gases.

18. Anti-vibration spring: Reduce the transmission of vibrations to the operator's hands.

19. Anti-vibration rubber: Reduce the transmission of vibrations to the operator's hands.

20. Spiked bumper (optional): Device for acting as a pivot when in contact with a tree or log.

21. Guide bar cover: Device for covering the guide bar and saw chain when the unit is not being used.

22. Combi box spanner: The tool for removing or installing a spark plug and tensioning the saw chain.

23. Handling instructions: Included with unit. Read before operation and keep for future reference to learn proper, safe techniques.

English

WARNINGS AND SAFETY INSTRUCTIONS

Operator safety

WARNING

This chain saw (CS33EDT/CS33EDTP) is designed especially

for tree care and surgery. Only persons trained in tree care and surgery may use this saw. Observe all literature, procedures and recommendations from the relevant professional organization. Failure to do so constitutes a high accident risk. We recommend always using a for sawing in trees. Rappelling techniques are extremely dangerous and require special training. The operator must be trained in and familiar with the use of safety equipment and working and climbing techniques. Always use the restraining equipment for both the operator and the saw.

rising platform

○ Always use the gloves to reduce the eﬀ ects of vibration ○ Always wear a safety face shield or goggles. ○ Gloves should be used when sharpening chain.

Always wear safety protective equipment such as jacket, trousers,

○

gloves, helmet, boots with steel toe-caps and non-slip soles whenever you use a chain saw. For working in trees the safety boots must be suitable for climbing techniques. Do not wear loose

clothing, jewelry, short pants, sandals or go barefoot. Secure hair so it is above shoulder length. ○ Do not operate this tool when you are tired, ill or under the inﬂ uence

of alcohol, drugs or medication.

○ Never let a child or inexperienced person operate the machine. ○ Wear hearing protection. Pay attention to your surroundings.

Be aware of any bystanders who may be signaling a problem. Remove safety equipment immediately upon shutting oﬀ engine.

○ Wear head protection. ○ Never start or run the engine inside a closed room or building.

Breathing exhaust fumes can kill.

English

○ For respiratory protection, wear a protection mask while emitting

the chain oil mist and dust from sawdust.

○ Keep handles free of oil and fuel. ○ Keep hands away from cutting equipment. ○ Do not grab or hold the unit by the cutting equipment. ○ When the unit turned oﬀ , make sure the cutting attachment has

stopped before the unit is set down.

○ When operation is prolonged, take a break from time to time so that

you may avoid possible Hand-Arm Vibration Syndrome (HAVS) which is caused by vibration.

○ The operator must obey the local regulations of cutting area.

WARNING

○ Anti-Vibr ation systems d o not guarante e that you will not s ustain

Hand-Arm Vibration Syndrome or carpal tunnel syndrome.

Therefore, continual end regular users should monitor closely

the condition of their hands and ﬁ ngers. If any of the above symptoms appear, seek medical advic e immediately.

○ Long or continuous exposure to high noise levels may cause

permanent hearing impairment. Always wear approved hearing protection when operating a unit/machine.

○ If you are using any medical electric/electronic devices such

as a pacemaker, consult your physician as well as the device manufacturer prior to operating any power equipment.

Unit/machine safety

○ Inspect the entire unit/machine before each use. Replace

damaged parts. Check for fuel leaks and make sure all fasteners are in place and securely tightened.

○ Replace parts that are cracked, chipped or damaged in any way

before using the unit/machine.

○ Make sure the side case is properly attached. ○ Keep others away when making carburetor adjustments. ○ Use only accessories as recommended for this unit/machine by

the manufacturer.

○ Never let the chain strike any obstacle. If the chain makes contact,

the machine should be stopped and checked carefully.

○ Make sure the automatic oiler is working. Keep the oil tank ﬁ lled

with clean oil. Never let chain run dry on the bar.

○ All chain saw service, other than the items listed in the operatorʼs/

ownerʼs manual, should be performed by competent chainsaw service personnel. (For example, if improper tools are used to remove the ﬂ ywheel or if an improper tool is used to hold the

ﬂ ywheel in order to remove the clutch, structural damage to the ﬂ ywheel could occur and could subsequently cause the ﬂ ywheel to

burst.)

WARNING

○ Never modify the unit/machine in any way. Do not use your unit/

machine for any job except that for which it is intended.

○ Never use chain saw without any safety equipment or that has

faulty safety equipment. It could result in serious personal injury.

○ Using guide bar/chain other than recommended by the

manufacturer which are not approved, could result in a high risk of personal accidents or injury.

Fuel safety

○ Mix and pour fuel outdoors and where there are no sparks or

ﬂ ames.

○ Use a container approved for fuel. ○ Do not smoke or allow smoking near fuel or the unit/machine or

while using the unit/machine.

○ Wipe up all fuel spills before starting engine. ○ Move at least 3 m away from fueling site before starting engine. ○ Stop engine and let it cool for a few minutes before removing fuel

tank cap.

○ Empty the fuel tank before storing the unit/machine. It is

recommended that the fuel be emptied after each use. If fuel is left in the tank, store so fuel will not leak.

○ Store unit/machine and fuel in area where fuel vapors cannot

reach sparks or open ﬂ ames from water heaters, electric motors or switches, furnaces, etc.

WARNING

Fuel is easy to ignite or get explosion or inhale fumes, so that pay

special attention when handling or ﬁ lling fuel.

Cutting safety

○ Do not cut any material other than wood or wooden objects. ○ For respiratory protection, wear an aerosol protection mask when

cutting the wood after insecticide has been applied. ○ Keep others including children, animals, bystanders and helpers

outside the hazard zone. Stop the engine immediately if you are

approached. ○ Hold the unit/machine ﬁ rmly with the right hand on the rear handle

and the left hand on the front handle.

○ Keep ﬁ rm footing and balance. Do not over-reach. ○ Keep all parts of your body away from the muﬄ er and cutting

attachment when the engine is running.

○ Keep Bar/Chain below waist level. ○ Before felling a tree, the operator must be accustomed to the

sawing techniques of the chain saw.

○ Be sure to pre-plan a safe exit from a failing tree. ○ While cutting, hold saw ﬁ rmly with both hands with thumb ﬁ rmly

locked around front handle, and stand with feet well balanced and

your body balanced.

○ Stand to the side of the saw when cutting - never directly behind it. ○ Always keep the spiked bumper face to a tree, because the chain

may suddenly be drawn into a tree, if so equipped. ○ When completing a cut, be ready to hold up the units as it breaks

into clear, so it will not follow through and cut your legs, feet or

body, or contact an obstruction. ○ Be alert against kickback (when saw kicks up and back at

operator). Never cut with the nose of the bar. ○ When relocating to a new work area, be sure to shut oﬀ the

machine and ensure that all cutting attachments are stopped.

○ Never place the machine on the ground when running. ○ Always ensure that the engine is shut oﬀ and any cutting

attachments have completely stopped before clearing debris or

removing grass from the cutting attachment.

○ Always carry a ﬁ rst-aid kit when operating any power equipment. ○ Never start or run the engine inside a closed room or building and/

or near the inﬂ ammable liquid. Breathing exhaust fumes can kill.

Maintenance safety

○ Maintain the unit/machine according to recommended procedures. ○ Disconnect the spark plug before performing maintenance except

for carburetor adjustments.

○ Keep others away when making carburetor adjustments. ○ Use only genuine HITACHI replacement parts as recommended

by the manufacturer.

CAUTION

Do not disassemble the recoil starter. You may get a possibility of

personal injury with recoil spring.

WARNING

Improper maintenance could result in serious engine damage or in

serious personal injury.

Tra ns po rt and storage

○ Carry the unit/machine by hand with the engine stopped and the

muﬄ er away from your body. ○ Allow the engine to cool, empty the fuel tank, and secure the unit/

machine before storing or transporting in a vehicle. ○ Empty the fuel tank before storing the unit/machine. It is

recommended that the fuel be emptied after each use. If fuel is left

in the tank, store so fuel will not leak.

○ Store unit/machine out of the reach of children. ○ Clean and maintain the unit carefully and store it in a dry place. ○ Make sure ignition switch is oﬀ when transporting or storing. ○ When transporting or storage, cover chain with guide bar cover.

If situations occur which are not covered in this manual, take care and use common sense. Contact HITACHI dealer if you need assistance. Pay special attention to statements preceded by the following words:

WARNING

Indicates a strong possibility of severe personal injury or loss of

life, if instructions are not followed.

CAUTION

Indicates a possibility of personal injury or equipment damage, if

instructions are not followed.

NOTE

Helpful information for correct function and use.

English

WARNING

KICKBACK DANGER (Fig. 1)

Fig. 1

One of the most severe dangers when working with a chain saw is the possibility of kickback. Kickback may occur when the upper tip of the guide bar touches an object, or when the wood closes in and pinches the saw chain in the cut. Tip contact in some cases may cause a lightning fast reverse reaction, kicking the guide bar up and back toward you. Pinching the saw chain along the top of the guide bar may also push the guide bar rapidly back towards you. Either of these reactions may cause you to lose control of the saw which could result in serious personal injury. Even though your saw has safety built into its design, you should not rely on these safety features exclusively. Know where your bar tip is at all times. Kickback does occur if you allow the kickback zone (1) of the bar to touch an object. Do not use that area. Kickback from pinching is caused by a cut closing and pinching the upper side of the guide bar. Study your cut and make sure it will open as you cut through. Maintain control when the engine is running by always keeping a ﬁ rm grip on the saw with your right hand on the rear handle, your left hand on the front handle and your thumbs and ﬁ ngers encircling the handles. Always hold the saw with both hands during operation and cut at high engine speed.

SPECIFICATIONS

○ Code “CS” of model name means “Chain saw”

Model CS33EDT (30) CS33EDT (35) CS33EDTP (35)

Type of equipment Chain saw, portable

Engine Size (cu. in.) 1.96 (32.2 ml)

Spark Plug NGK BPMR-7A

Fuel Tank Capacity (ﬂ .oz) 9.9 (290 ml)

Chain Oil Tank Capacity (ﬂ .oz) 6.1 (180 ml) Dry Weight (lbs)

(Without guide bar and chain) Chain pitch (in.) 3/8 (9.53 mm)

Chain gauge (in.) 0.05 (1.27 mm) Sound pressure level LpA (dB (A)) by ISO 22868

Equivalent Uncertainty Sound power level LwA (dB (A)) by ISO 22868 Measured

Sound power level LwA (dB (A)) by 2000/14/EC Measured Guaranteed Vibration level (m/s Front handle Rear handle Uncertainty

Guide bar length (in.) 12 (300 mm) 14 (350 mm) 14 (350 mm)

Type of chain

Max. engine power by ISO 7293 (kW)

Max. engine speed (min

Idle engine speed (min-1) 3000

Speciﬁ c fuel consumption (g/kWh) 567 567 534

Max. chain speed (m/sec) 22.9

Sprocket (number of teeth) 6

NOTE: Equivalent noise level/vibration levels by ISO 22868/22867 are calculated as the time-weighted energy total for noise/vibration levels

under various working conditions with the following time distribution: 1/3 idle, 1/3 full, 1/3 racing speed.

* All data subject to change without notice.

Uncertainty

) by ISO 22867

91VG045 (Oregon)

1.3/9300 1.3/9300 1.2/9300

-1

) 12000

7.5 (3.4 kg)

100

109

113 116

4.4

6.1

0.8

91VG052 (Oregon)

91VG052

(Oregon)

English

ASSEMBLY PROCEDURES

WARNING

Never try to start engine without side case, bar and chain securely

fastened.

1. Pull the chain brake (18) toward the front handle to check that the

brake is disengaged. (Fig. 15)

2. Remove guide bar clamp nut (2). Remove the side case (3) (Fig. 2)

Fig. 2

* In case of installing the spiked bumper (4), install the spiked

bumper (4) to the unit with two screws. (Fig. 3)

Fig. 3

3. Install the guide bar (5) onto the bolts (6), then push it toward the

sprocket (7) as far as it will go. (Fig. 4)

4. Conﬁ rm the direction of saw chain (10) is correct as in the ﬁ gure,

and align the chain on the sprocket. (Fig. 5)

Fig. 4

5. Guide the chain drive links into the bar groove all around the bar.

6. Install the side case (3) onto the bolts (6). Make sure that the boss of chain tension adjust bolt (8) ﬁ ts into the

hole of the bar (9). (Fig. 4) Then tighten the guide bar clamp nut (2) by hand that allows the

chain bar end to move up and down easily. (Fig. 2)

7. Raise the bar end, and tighten the saw chain (10) by turning the

tension adjustment bolt (11) clockwise. To check proper tension,

lightly lift up the center of chain and there should be about 0.5 – 1.0

mm clearance between bar and edge of drive link (12). (Fig. 6, 7)

0.5-1.0 mm

CAUTION

PROPER TENSION IS EXTREMELY IMPORTANT

8. Raise the bar end and securely tighten the guide bar clamp nut

with the combi box spanner. (Fig. 7)

9. A new chain will stretch so adjust the chain after a few cuts and

watch chain tension carefully for the ﬁ rst half hour of cutting.

NOTE

Check the chain tension frequently for optimum performance and

durability.

CAUTION

○ When the chain is excessively tightened, the bar and chain will

be damaged rapidly. Conversely, when the chain is excessively

loosened, it may get out of the groove in the bar. ○ Always wear gloves when touching the chain.

WARNING

During operation, hold chain saw ﬁ rmly with both hands. A single

hand operation may cause serious injury.

Fig. 6

Fig. 7

Fig. 5

English

OPERATING PROCEDURES

Fuel (Fig. 8)

Fig. 8

WARNING

○ The chain saw is equipped with a two-stroke engine. Always run

the engine on fuel, which is mixed with oil. Provide good ventilation, when fueling or handling fuel.

○ Fuel contains highly ﬂ ammable and it is possible to get the serious

personal injury when inhaling or spilling on your body. Always pay attention when handling fuel. Always have good ventilation when handling fuel inside building.

Fuel

○ Always use branded 89 octane unleaded gasoline. ○ Use genuine two-cycle oil or use a mix between 25:1 to 50:1,

please consult the oil bottle for the ratio or HITACHI dealer.

○ Only for the state of California at 50:1. ○ If genuine oil is not available, use an anti-oxidant added quality

oil expressly labeled for air-cooled 2-cycle engine use (JASO FC GRADE OIL or ISO EGC GRADE). Do not use BIA or TCW (2-stroke water-cooling type) mixed oil.

○ Never use multi-grade oil (10 W/30) or waste oil. ○ Always mix fuel and oil in a separate clean container.

Always start by ﬁ lling half the amount of gasoline, which is to be used. Then add the whole amount of oil. Mix (shake) the fuel mixture. Add the remaining amount of gasoline. Mix (shake) the fuel-mix thoroughly before ﬁ lling the fuel tank.

Fuelin g

WARNING (Fig. 9)

○ Always shut oﬀ the engine and let it cool for a few minutes before

refueling.

○ Do not smoke or bring ﬂ ames or sparks near the fueling site. ○ Slowly open the fuel tank (13), when ﬁ lling up with fuel, so that

possible overpressure disappears.

○ Tighten the fuel tank cap carefully, after fueling. ○ Always move the unit at least 3 m from the fueling area before

starting.

○ Always wash any spilled fuel from clothing immediately with soap. ○ Be sure to check any fuel leaking after refueling.

Chain oil (Fig. 9)

Slowly open the oil tank (14), and ﬁ ll up with chain oil. Always use good quality chain oil. When the engine is running, the chain oil is automatically discharged. Fill up the oil tank (14) with chain oil every time when refueling.

NOTE

When pouring fuel (13) or chain oil (14) into the tank, place the

unit with cap side up. (Fig. 9)

Starting the cold engine (Fig. 10 CAUTION

Before starting, make sure that the bar/chain does not touch

anything.

1. Make sure chain brake is engaged. (Fig. 10)

2. Set ignition switch (15) to ON position. (Fig. 11)

3. Push priming pump (16) about ten times so that fuel ﬂ ows through

priming pump into carburetor.(Fig. 12)

15)

Fig. 10

Fig. 11

Fig. 9

Before fueling, clean the tank cap area carefully, to ensure that no dirt falls into the tank. Make sure that the fuel is well mixed by shaking the container, before fueling.

Fig. 12

4. Turn the choke lever (17) to choked position (Fig. 12). This will

automa tically loc k the throttl e in startin g position.

English

5. Pull recoil starter briskly, taking care to keep the handle in your

grasp and not allowing it to snap back. (Fig . 13)

6. When you hear ﬁ rst ignition, return the choke lever to run

position. (Fig. 12)

7. Pull recoil starter briskly again in the aforementioned manner.

(Fig. 13)

NOTE

If engine does not start, repeat procedures from 4 to 7.

8. A s soo n as e ngin e sta rt, p ull t hrot tle t rig ger f ull o nce a nd rel eas e

immediately. (Fig. 14)

Then half-throttle is disengaged.

9. Make sure c hain brake is disengaged. (Fig. 15) Al low the engin e about 2-3 min utes to warm up b efore subje cting

it to any load.

Do not run the engine at high speed without the load to shorten

the longevity of the engine.

Fig. 13



Fig. 16

Chain brake operation (Fig. 17)

Fig. 17

Chain brake (18), is designed to activate in an emergency such as kic kback ac tion. Please c heck to verif y that it works pr operly befor e use. Appli cation of bra ke is made by movin g the front han d guard towards the bar. During the chain brake operation, even if the throttle trigger is pulled, the engine speed does not increase and the chain does not turn. To release the brake, pull up the front ha nd guard.

How to conﬁ rm:

1) Tur n oﬀ the engine.

2) Holding the chain saw horizontally, release your hand from the

front handle, hit the tip of the guide bar to a stump or a piece

of wood, and conﬁ rm brake operation. Operating level varies by

bar size.

Fig. 14

Starting the warm engine

Use only 1, 2, 7, and 9 of the starting procedure for a cold engine. If the engine does not start, use the same starting procedure as for a cold engine.

Chain lubrication test

Check that chain oil is discharged properly. When the saw chain starts to revolve, point the head of the guide bar to a stump, etc., and pull the throttle trigger to perform high-speed operation for around 10 seconds. If chain oil is sprayed over the stump, it is discharged properly. (Fig. 16)

Fig. 15

In case the brake is not eﬀ ective, ask our dealer for inspection and repairs. If the engine keeps rotating at high speed with the brake engaged, the clu tch will overheat causing trouble. When the brake engages during operation, immediately release the throttle trig ger to stop the engine.

WARNING

Do not carry the machine with the en gine running.

Stopping (Fig. 18)

Decrease engine speed, and push ignition switch (15) to stop position.

Fig. 18

English

WARNING

Do not put the machine where there are ﬂ ammable materials such

as dried grass, since the muﬄ er is still hot after the engine has stopped.

NOTE

If the engine does not stop, it can be forced to stop by rotating the

choke lever to the choked position. Before restarting the engine, ask our dealer for repairs.

WARNING

○ Do not overreach or cut above shoulder height. ○ Use extr a caution whe n felling, an d do not use the saw i n a nose-

high position or above shoulder height.

CHAIN CATCHER

The chain catcher is located on the power head just below the chain to further prevent the possibility of a broken chain striking the chain saw user.

WARNING

Do not st and in-line with chain when cut ting.

BASIC TECHNIQUES FOR MAKING FELLING, LIMBING AND BUCKING CUTS The intention of the following information is to provide you with the general introd uction to wood cutting techniques.

WARNING

○ This information does not cover all speciﬁ c situations, which

may depend on diﬀ erences in terrain, vegetation, kind of wood, form and size of trees, etc. Consult your servicing dealer, forestry agent or local forestry schools for advice on speciﬁ c woodcutting problems in your area. This will make your work more eﬃ cient and safer.

○ Avoid cutt ing in adverse weather conditions, such as dense fo g,

heavy r ain, bitter cold, high winds, etc.

Adver se weather is of ten tiring to work in and creates potentially

dangerous conditions such as slippery ground.

High winds may force the tree to fall in an unexpected direction

causing property damage or personal injury.

CAUTION

Neve r use a chain saw to p ry or for any pur pose for whic h it is not

intended.

WARNING

○ Avoid stumbling on obstacles such as stumps, roots, rocks,

branches and fallen trees. Watch out for holes and ditches. Be

extremely cautious when working on slopes or uneven ground. Shut oﬀ the saw when moving from one work place to another. Alway s cut at wide open t hrottle. A slo w moving chain c an easily

catch an d force the saw to jerk. ○ Never use the s aw with only one hand. You cannot control the saw properly and you may lose control

and injure yourself severe ly. Keep the saw body close to your body to improve control and

reduce strain. When c utting with t he bottom par t of the chain the reactive force

will pu ll the saw away fro m you towards the w ood you are cut ting. The saw will control the feeding speed and sawdust will be

directed towards you. (Fig. 19)

○ When cutting with the upper part of the chain the reactive force

will push the saw towards you and away from the wood you are cutting. (Fig. 20)

Fig. 20

○ There is a r isk of kickb ack if the saw is pu shed far enou gh so that

you begin to cut with the nose of t he bar.

The safest cutting method is to cut with the bottom par t of the

chain. S awing with the u pper part make s it much more diﬃ cult to

control the saw and increases the risk of kickback. ○ In case t he chain loc ked, immedi ately relea se the throt tle trigg er. If the throttle trigger keeps rotating at high speed with the chain

locked, the clutc h will overheat causing trouble.

NOTE

Always keep the spiked bumper face to a tree, because the

chain may suddenly be drawn into a tree.

FELLING

Felling is more than cutting down a tree. You must also bring it down as near to an intended place as possible without damaging the tree or anything else. Before felling a tree, carefully consider all conditions which may eﬀ ect the intended direction, su ch as: Angle of the tree. Shape of the c rown. Snow load on the crown. Wind conditions. Obstacles within tree range (e.g., other trees, power lines, roads, buildings, etc.).

WARNING

○ Always observe the general conditions of the tree. Look for

decay and rot in the trunk which will make it more likely to snap

and start to fall before you expect it. ○ Look for dry branches, which may break and hit you when you

are working. Always keep animals and people at least twice the tree length

away whil e felling. Cle ar away shrubs a nd branches f rom around

the tree. Prepare a path of retreat away from the felling direction.

BASIC RULES FOR FELLING TREES

Norma lly the felli ng consist s of two main cu tting ope rations, n otching and making the felling cut. Start making the upper notch cut on the side of the tree facing the feeling direction. Look through the kerf as you saw the lower cut so you do not saw too deep into the trunk. The notch should be deep enough to create a hinge of suﬃ cient width and strength. The notch opening should be wide enough to direct the fall of the tree as long as possible. Saw the felling cut from the other side of the tree between one and two inches (3–5 cm) above the edge of the notch. (Fig. 21)

Fig. 19

Fig. 21

English

19. Felling direction

20. 45° minimum notch opening

21. Hinge

22. Felling cut

Never saw complete ly through the trunk. Always leave a hinge. The hinge guides the tree. If the trunk is completely cut through, you lose control over the fellin g direction. Inser t a wedge or a felling lever in the cut well before the tree becomes unstable and starts to move. This will prevent the guide bar from binding in the felling cut if you have misjudged the falling direction. Make sure no people have come into the range of the falling tree before you push i t over.

FELLING CUT, TRUNK DIAMETER MORE THAN TWICE GUIDE BAR LENGTH

Cut a large, wide notch. Then cut a recess into the center of the notch. A lways leave a hing e on both sides of t he center cut. (Fig. 22)

Fig. 22

Compl ete the felling c ut by sawing aro und the trunk a s in the Fig. 23.

Stand on the left side of the trunk. Maintain a secure footing and rest the saw on the trunk. Hold the saw close to you so that you are in full control of it. Keep well away from the chain. Move only when the trunk is between you and the chain. Watch out for spring back of limbs under tension.

LIMBING THICK BRANCHES

When limbing thick branches, the guide bar may get pinched easily. Branc hes under ten sion often s nap up, so cut tro ublesome br anches in small steps. Apply the same principles as for cross cutting. Think ahead and be aware of the possible consequences of all your actions.

CROSS CUTTING/BUCKING

Before starting to cut through the log, try to imagine what is going to happen. Look out for stresses in the log and cut through it in such a manner that the guide bar will not get pinched.

CROSS CUTTING LOGS, PRESSURE ON TOP

Take a ﬁ rm stance. Begin with an upper cut. Do not cut too deeply, about 1/3 of the log diameter is enough. Finish with a bottom cut. The saw cuts shoul d meet. (Fig. 25)

Fig. 25

23. Relieving cut

24. Cross cut

25. Pressure on top

26. Pressure side

27. Tension side

28. Relative depth of saw cuts

THICK LOG, LARGER THAN GUIDE BAR LENGTH

Begin by c utting on th e opposite sid e of the log. Pull t he saw towards you, followed by previous procedure. (Fig. 26)

Fig. 23

WARNING

These methods are extremely dangerous because they involve

the use of the nose of guide bar and can result in kickback.

Only properly trained professionals should attempt these

techniques.

LIMBING

Limbing is removing the branches from a feller tree.

WARNING

A majority of kickback accidents occur during Iimbing. Do not use the nose of the guid e bar. Be extremely cautious and

avoid contacting the log, other limbs or objects with the nose of the guide bar. Be extremely cautious of limbs under tension. They can spring back towards you and cause loss of control resulting in injury. (Fig. 24)

Fig. 24

Fig. 26

If the lo g is lying on the g round make a bor ing cut to avoid cu tting into the ground. Finish with a bot tom cut. (Fig. 27)

Fig. 27

English

WARNING

KICKBACK DANGER

Do not attempt a boring cut if you are not properly trained. A

boring cut involves the use of the nose of the guide bar and can result in kickback.

CROSS CUTTING LOGS, PRESSURE ON BOTTOM

Take a ﬁ rm stance. Begin with a bottom cut. The depth of the cut should be about 1/3 of the log diameter. Finish with an upp er cut. The saw cuts should meet. (Fig. 28)

32 33

Fig. 28

29. Relieving cut

30. Cross cut

31. Pressure on bottom

32. Tension side

33. Pressure side

34. Relative depth of saw cuts

THICK LOG, LARGER THAN GUIDE BAR LENGTH

Begin by c utting on th e opposite sid e of the log. Pull t he saw towards you, followed by previous procedure. Make a boring cut if the log is close to the ground. Finish with a top cut. (Fig. 29)

Fig. 29

WARNING

KICKBACK DANGER

Do not attempt a boring cut if you are not properly trained. A

boring cut involves the use of the nose of the guide bar and can result in kickback. (Fig. 30)

Fig. 30

IF THE SAW GETS STUCK

Stop the engine. Raise the log or change its position, using a thick branch or pole as a lever. Do not try to pull the saw free. If you do, you can deform the handle or be injured by the saw chain if the saw is suddenly released.

MAINTENANCE

MAINTENANCE, REPLACEMENT OR REPAIR OF THE EMISSION CONTRO L DEVICES AND SYST EM MAY BE PERFORMED BY ANY NON-ROAD ENGINE REPAIR ESTABLISHMENT OR INDIVIDUAL.

Carburetor adjustment (Fig. 31)

Fig. 31

WARNING

Never start the engine without th e complete side case. Oth erwise the c lutch can com e loose and caus e personal in juries. In the ca rburetor, fuel i s mixed with air. Whe n the engine is te st run at the factory, the carburetor is adjusted. A further adjustment may be required, according to climate and altitude. The carburetor has one adjustment possibility: T = Idle speed adjustment screw.

Idle speed adjustment (T)

Check that the air ﬁ lter is clean. When the idle speed is correct, the cutting attachment will not rotate. If adjustment is required, close (clockwise) the T-screw, with the engine running, until the cutting attachment starts to rotate. Open (counter-clockwise) the screw until the cutti ng attachme nt stops. You have reached the correct idle speed when the engine runs smoothly in all positions well below the rpm when the cutting att achment star ts to rotate. If the cutting at tachment still rotates af ter idle speed adjustment, contact HITACHI dealer.

WARNING

When the engine is idling the cutting attachment must under no

circumstances rotate.

NOTE

Some models sold in areas with strict exhaust emission

regulation do not have high and low speed carburetor

adjustments. Such adjustments may allow the engine to be

operated outside of their emission compliance limits. For these

models, the only carburetor adjustment is idle speed. If you are not familiar with this type of adjustment, please ask for assistance from your HITACHI dealer.

Air ﬁ lter (Fig. 32)

The air ﬁ lter (37 ) and cleaner s ponge (36), (38) mus t be cleaned fr om dust and dirt in order to avoid:

○ Carburetor malfunctions. ○ Starting problems. ○ Engine power reduction. ○ Unnecessary wear on the engine parts. ○ Abnormal fuel consumption.

Clean the air ﬁ lter daily or more often if working in exceptionally dusty areas.

Cleaning the air ﬁ lter

Remove t he air ﬁ lte r cover (35) and the c leaner spon ge (36). Turn the air ﬁ lter (37) 20° counter-clockwise and remove. Then remove the cleaner sponge (38). Rinse them in warm soap suds. Check that the ﬁ lter is dry before reassembly. An air ﬁ lter that has been used for some time cannot be cleaned completely. Therefore, it must regularly be replaced with a new one. A damaged ﬁ lter must always be replaced.

English

Fig. 32

Spark plug (Fig. 33)

The spark plug condition is inﬂ uenced by:

○ An incorrect carburetor setting. ○ Wrong fuel mixture (too much oil in the gasoline) ○ A dirty air ﬁ lter. ○ Hard running conditions (such as cold weather).

These factors cause deposits on the spark plug electrodes, which may resu lt in malfunction and s tarting di ﬃ culties. If the engine is low on power, diﬃ cu lt t o st ar t or r un s po or ly a t id lin g s pee d, a lw ays c he ck the spark plug ﬁ rst. If the spark plug is dirty, clean it and check the electrode gap. Readjust if necessary. The correct gap is 0.024” (0.6 mm). The spark plug should be replaced af ter about 100 operation hours or earlier if the electrodes are badly eroded.

Fig. 35

Side case (Fig. 36)

Always keep the side case and drive area clean of saw dust and debris. Periodically apply oil or grease to this area to protect from corrosion as some trees contain high levels of acid.

Fig. 36

Fuel ﬁ lter (Fig. 37)

Remove the fuel ﬁ lter from the fuel tank and thoroughly wash it in solvent. After that, push the ﬁ lte r into the tank completely.

0.024"(0.6 mm)

0.6 mm

Fig. 33

NOTE

In some areas, local law requires using a resistor spark plug

to suppress ignition signals. If this machine was originally equipped with resistor spark plug, use same type of spark plug for replacement.

Oiler port (Fig. 34)

Clean the chain oiler port (39) whenever possible.

Fig. 34

Guide bar (Fig. 35)

Before using the machine, clean the groove and oiler port (40) in the bar with the special gauge oﬀ ered as an optional accessory.

NOTE

If the ﬁ lter is hard due to dust and dirt, rep lace it.

Chain oil ﬁ lter (Fig . 38)

Remove the oil ﬁ lter and thoroughly wash it in solvent. After that, push the ﬁ lter into the tank completely.

Fig. 37

Fig. 38

English

NOTE

If the ﬁ lter is hard due to dust and dirt, replace it.

Cleaning the cylinder ﬁ ns (Fi g. 39)

When wood chips are caught between cylinder ﬁ ns (41), the engine may overheat, resulting in lower output. To avoid this, always keep cylinder ﬁ ns and fan case clean. Every 100 operating hours, or once a year (more often if conditions require), clean ﬁ ns and external surfaces of engine of dust, dirt and oil deposits which can contribute to improp er cooling.

Fig. 39

Cleaning the muﬄ er (Fig . 40)

Remove the muﬄ er and s park arresto r, if so equi pped, and cle an out any excess carbon from the exhaust por t or muﬄ er inlet every 100 hours of operation.

CHAIN SHARPENING Parts of a cutter (Fig. 41, 42)

Fig. 41

Fig. 42

WARNING

○ Gloves should be used when sharpening chain. ○ Be sure to round oﬀ the front edge to reduce the chance of

kickback or tie -strap breakage.

42. Top plate

43. Working corner

44. Side plate

45. Gullet

46. Heel

47. Chassis

48. Rivet hole

49. Toe

50. Depth gauge

51. Correct angle on top plate (degree of angle depends on chain

type)

52. Slightly protruding “hook” or point (cur ve on non-chisel chain)

53. Top of depth gauge at correct height below top plate

54. Front of depth gauge rounded oﬀ

LOWERING DEPTH GAUGES WITH A FILE

1) If you shar pen your cut ters with a ﬁ le holder, che ck and lower the

depth.

2) Check depth gauges every third sharpening.

3) Place depth gauge tool on cutter. If depth gauge projects, ﬁ le

it level with the top of the tool. Always ﬁ le from the inside of the

chain toward an outside cut ter. (Fig. 43)

For long -term storage Drain all fuel fro m the fuel tank. Start a nd let engine ru n until it stops. Repair any damage which has resulted from use. Clean the unit with a clean rag, or the use of high pressure air hose. Put a few drops of two-cycle engine oil into the cylinder through the spark plug hole, and spin the engine over several times to distrib ute oil. Cover the unit and store it in a dr y area.

Fig. 40

Fig. 43

English

4) Round oﬀ f ront corner to m aintain orig inal shape of de pth gauge after using depth gauge tool. Always follow the recommended depth gauge setting found in the maintenance or operator manual for your saw. (Fig. 44)

Fig. 44

GENERAL INSTRUCTIONS FOR FILING CUTTERS

File (55) cutter on one side of the chain from the inside out. File on forward stroke only. (Fig. 45)

5) Keep all cutters the same length. (Fig. 46)

6) File enough to remove any damage to cutting edges (side plate (56) and top plate (57)) of cutter. (Fig. 47)

SHARPENING ANGLES FOR SHARPENING SAW CHAIN

1. Part Number 91VG

2. Pitch 3/8”

3. Depth Gauge Setting 0.025"

Fig. 45

Fig. 46

Fig. 47

5454

Inspection and service before use

○ Check that no peel-oﬀ , degradation, or damage is observed in the

Anti-Vibration rubber members, and no loosening or damage is observed in their ﬁ xtures.

○ Check that no damage is observed in the Anti-Vibration springs,

and no loosening or damage is observed in their ﬁ xtures.

○ Check that no deformation or damage is observed in the front and

rear handles.

○ Check that the ﬁ xtures for front and rear handles are suﬃ ciently

tightened and free of damage.

○ Check that bolts, nuts, etc. used for each part are suﬃ ciently

tightened and free of damage.

Daily maintenance

○ Clean the ex terior of the unit. ○ Clean the ch ain oil ﬁ lter port. ○ Clean the groove and oil ﬁ lter port in the guide bar. ○ Clean the side case of saw dust. ○ Check that the saw chain is sharp. ○ Check that the bar nuts are suﬃ ciently tightened. ○ Make sure th at the chain tra nsport gua rd is undamag ed and that

it can be securely ﬁ tted. ○ Check that nuts and sc rews are suﬃ ciently tightened. Especially inspect the bolt of muﬄ er and ensure that they are

properly tightened before starting engine. Should any of the

bolts be loose, retighten them immediately. Failure to do so

could result in serious ha zard. ○ Check the tip of the bar. Please exchange it for the new one

when it is worn out. ○ Check the band of chain brake. Please exchange it for the new

one when it is worn out.

Weekl y maintenance

○ Check the re coil starter, especially cord and return spring. ○ Clean the ex terior of the spark plug. ○ Remove the sp ark plug and check the electrode gap. Adjust it to

0.024” (0.6 mm) or change the spark plug.

○ Clean the cooling ﬁ ns on the cylinder and check that the air

intake at t he recoil star ter is not clogged. ○ Clean the air

Monthly maintenance

○ Rinse the fuel tank with gasoline, and clean fuel ﬁ lter. ○ Clean chain oil ﬁ lter. ○ Clean the ex terior of the carburetor and the space around it. ○ Clean the fan and the space around it. ○ Clean the mu ﬄ er of carbon.

NOTE

When ordering the parts to your nearest dealer, please use the

item numbers showing on the parts breakdown section in this

instruction.

MODEL NO.

E&S

ﬁ lter.

BAR NO.

PO12-50CR PO14-50CR

LENGTH-

TYPE

12″ 14″

NOSE-

TYPE

SPROCKET SPROCKET

CHAIN NO. (OREGON)

91VG045 91VG052

4. Side Plate Filing Angle 80°

5. Top Plate Angle 30°

6. File Guide Angle 90°

Maintenance schedule

Below you will ﬁ nd some general maintenance instructions. For further information please contact HITACHI dealer.

SIGNIFICATION DES SYMBOLES

REMARQUE : Certains appareils n’en sont pas pourvus.

Symboles

ATTENTION

Les symboles suivants sont utilisés pour l’outil. Bien se familiariser avec leur signiﬁ cation avant d’utiliser l’outil.

Il est essentiel que vous lisiez et compreniez parfaitement les consignes de sécurité et autres avertissements suivants et que vous les observiez strictement. L’utilisation inattentive ou inadéquate de cette machine risque de provoquer des blessures graves ou fatales.

Lisez, comprenez et suivez toutes les instructions et tous les avertissements donnés dans ce manuel et sur le produit.

Utilisez toujours des lunettes de protection ainsi qu’une protection pour la tête et les oreilles lorsque vous utilisez ce produit.

Portez une attention particulière aux phénomènes de rebond. Prenez garde aux mouvements possibles soudains et accidentels du guide-chaîne de votre tronçonneuse.

L’utilisation d’une tronçonneuse avec une seule main n’est pas autorisée. Lorsque vous coupez avec votre machine, tenir celle-ci fermement avec les deux mains, le pouce enserrant la poignée avant.

Frein de chaîne Réglage du carburateur - mélange à basse vitesse

Étranglement - position de fonctionnement (Ouvert) Réglage du carburateur - mélange à haute vitesse

Français

Oﬀ /Arrêt

Arrêt d'urgence

Mélange de carburant et d'huile

Remplissage d’huile de la chaîne

Réglage du carburateur - ralenti

Étranglement - position d'étranglement (Fermé) Surface chaude

On/Démarrage

Sommaire

DESCRIPTION ................................................................................ 16

PRÉCAUTIONS ET CONSIGNES DE SÉCURITÉ .......................... 17

SPÉCIFICATIONS ........................................................................... 19

MONTAGE ...................................................................................... 20

UTILISATION ................................................................................... 21

ENTRETIEN .................................................................................... 26

Liste des pièces détachées

Français

DESCRIPTION

1. Commande des gaz : Dispositif actionné par le doigt de l’opérateur pour la commande de vitesse du moteur.

2. Levier accélérateur bloqué : Dispositif qui empêche le déclenchement accidentel de la commande des gaz tant qu’elle n’est pas relâchée manuellement.

3. Commutateur de marche/arrêt : Dispositif permettant de lancer ou d’arrêter le moteur.

4. Bouchon du réservoir d’huile : Permet de fermer le réservoir d’huile.

5. Lanceur à retour automatique : Tirer sur la poignée pour lancer le moteur.

6. Poignée avant : Poignée de soutien située sur ou vers l’avant du carter moteur.

7. Bouchon du réservoir de carburant : Permet de fermer le réservoir de carburant.

8. Poignée arrière : Poignée de transport située sur le dessus du carter du moteur.

9. Levier d’étranglement : Dispositif qui enrichit le mélange essence/ air dans le carburateur pour faciliter le démarrage.

10. Bomba de escorvar ; Dispositivo para fornecer combustível adicional, para ajudar no arranque.

11. Guide-chaîne : Pièce qui soutient et guide la chaîne de coupe.

12. Chaîne découpe : Chaîne qui sert d’instrument découpe.

13. Frein de chaîne (protection de main avant) : Dispositif d’arrêt ou de verrouillage de la chaîne.

14. Point d’attache: partie permettant de suspendre l’unité à l’aide d’une sangle de sécurité, d'un mousqueton ou d'une corde.

15. Capteur de chaîne : Dispositif qui retient la chaîne de coupe.

16. Carter de protection latérale : Couvercle de protection du guidechaîne, de la chaîne, de l'embrayage et de la roue dentée lorsque la chaîne est en cours d'utilisation.

17. Silencieux : Réduit le bruit d’échappement du moteur et dirige les gaz d’échappement.

18. Ressort anti-vibration : Réduit les vibrations transmises aux mains de l’opérateur.

19. Poignée anti-vibration : Réduit les vibrations transmises aux mains de l’opérateur.

20. Griﬀ e d’abattage (option) : Dispositif qui tient lieu de pivot quand l’outil entre en contact avec un arbre ou un billot de bois.

21. Cache de guide-chaîne : Dispositif qui recouvre le guide-chaîne et la chaîne de coupe quand on ne se sert pas de l’outil.

22. Clé à douille multiple : Outil qui permet de déposer et de remonter la bougie et de tendre la chaîne de coupe.

23. Mode d’emploi : Fourni avec l’outil. Lisez-le avant d’utiliser l’outil et conservez-le à des ﬁ ns de référence ultérieure pour apprendre les techniques d’utilisation correcte et de sécurité.

+ 36 hidden pages