Hitachi CS40EK Omistajan opas

CS35EK/CS38EK

CS40EK/CS45EK

CS33EL/CS38EL

CS40EL/CS45EL

Owner's manual

Ägarhandbok

Betjeningsvejledning

Bruksanvisning

Omistajan opas

970-82812-202 2007.10

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Owner's manual

Read the manual carefully before

operating this machine.

CS35EK/CS38EK

CS40EK/CS45EK

CS33EL/CS38EL

CS40EL/CS45EL

GB-1

The engine exhaust from this product

contains chemicals known to the State of

California to cause cancer, birth defects

and other reproductive harm.

WARNING

Read, understand and follow all warnings and

instructions in this manual and on the unit.

Always wear eye, head and ear protectors when

using this unit.

Warning, kickback danger. Be careful sudden

and accidental upward and/or backward mo-

tion of the guide bar.

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.

One-handed usage not permitted. While cutting,

hold saw firmly with both hands with thumb

firmly locked around front handle.

Read the manual carefully.

Check that the cutting equipment is correctly assembled and adjusted.

Start the unit and check the carburetor adjustment. See "Maintenance".

Before using your machine

GB-2

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Yoshio Osada

We, Nikko Tanaka Engineering Co., Ltd., 3-4-29 Tsudanuma, Narashino, Chiba, Japan

Declare under our sole responsibility that the product, chain saw model

to which this declaration relates is in conformity with the essential safety requirements of directives.

98/37/EC, 89/336/EEC, 2000/14/EC

The following standards have been taken into consideration

Serial No. up from E570001

Manufactured at : Chiba, Japan

Signature:

Position : Director

Notified body: 0404, SMP Svensk MaskinprovningAB, Fyrisborgsgaian 3, SE-754 50, Uppsala, Sweden,

has carried out EU type examination according to Article 8, point 2c, paragraph 3. The notified body

has issued certificate of EU type examination no: 404/96/354, 404/96/401 according to Annex Vl,

point 4.

on the 05/01/2007

CS35EK/CS38EK/CS40EK/CS45EK

CS33EL/CS38EL/CS40EL/CS45EL

EN ISO 11681-1:2003

EN ISO 12100-1:2003,EN ISO 12100- 2:2003

CISPR12:2005

What is what?

Warnings and safety instructions

Assembly procedures

Operating procedures

Maintenance

Specifications

4

5

6

7

11

16

Index

GB-3

1. What is what?

Since this manual covers several models, there may be some difference between pictures and your unit. Use the instructions that apply to your unit.

 1. Throttle trigger

 2. Throttle trigger lockout (Safety trigger)

 3. Ignition switch

 4. Oil tank cap

 5. Recoil starter

 6. Front handle

 7. Fuel tank cap

 8. Decompression valve

 9. Airfilter cover

 10. Guide bar

 11. Saw chain

 12. Front hand guard

 13. Choke knob

 14. Chain brake (optional)

 15. Spiked bumper

 16. Chain catcher

 17. Side case

 18. Guide bar clamp nut

 19. Guide bar cover

20. Combi box spanner

 21. Owner's manual

GB-4

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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 influence of alcohol, drugs or

medication.

Never let a child or inexperienced person

operate the machine.

Wear hearing protection.

Never start or run the engine inside a closed

room or building. Breathing exhaust fumes

can kill.

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 is 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 whitefinger disease which is caused

by vibration.

The operator must obey the local regulations

of cutting area.

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 safety guard 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 filled with clean oil. Never let chain

run dry on the bar.

All chainsaw service, other than the items listed

in the operator's/owner's manual, should be

performed by competent chain-saw service

personnel. (For example, if improper tools are

used to remove the flywheel or if an improper

tool is used to hold the flywheel in order to

remove the clutch, structural damage to the

flywheel could occur and could subsequently

cause the flywheel to burst.)

Mix and pour fuel outdoors and where there are

no sparks or flames.

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 before removing fuel 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 flames

from water heaters, electric motors or switches,

furnaces. etc.

Fuel safety

Unit / machine 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 firmly with the right

hand on the rear handle and the left hand on

the front handle.

Keep firm footing and balance. Do not over-

reach.

Keep all parts of your body away from the

muffler 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 firmly with both hands

with thumb firmly 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.

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.

Cutting safety

Maintain the unit/machine according to rec-

ommended 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.

Maintenance safety

2. Warnings and safety instructions.

Operator safety

WARNING!

Using guide bar/chain other than recom-

mended by the manufacturer which are not

approved, could result in a high risk of

personal accidents or injury.

WARNING!

Never use chain saw without any safety

equipment or that has faulty safety

equipment. It could result in serious

personal injury.

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.

WARNING!

Antivibration systems do not guarantee that

you will not sustain whitefinger dis-ease or

carpal tunnel syndrome. Therefore, continual

and regular users should monitor closely the

condition of their hands and fingers. If any of

the above symptoms appear, seek medical

advice immediately.

WARNING!

Long or continuous exposure to high noise

levels may cause permanent hearing

impairment. Always wear approved hearing

protection when operating a unit/machine.

Carry the unit/machine by hand with the

engine stopped and the muffler 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 maintenance the unit carefully and

store it in a dry place

Make sure engine switch is off when trans-

porting or storing.

When transporting in a vehicle, cover chain

with chain cover.

Transport and storage

WARNING!

Improper maintenance could result in

serious engine damage or in serious

personal injury.

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.

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:

GB-5

Slightly move the bar back and forth and make

sure the chain tension boss (4) fits into the hole

(5) in the bar properly.

2. Confirm the direction of saw chain (1) is

correct as in the figure, and align the chain on

the sprocket. (Fig. 1-2)

3. Guide the chain drive links into the bar

groove all around the bar.

4. Install the side case (1) onto the guide bar

clamp bolts while inserting location pin (2) on

the side case into the location hole (3) on the

unit. (Fig. 1-3)

Then finger tight the clamp nuts. (Fig. 1-3B)

3. Assembly procedures

NOTE!

Fig.1-0 Fig.1-2Fig.1-1

Fig.1-3 Fig.1-3B

Fig.1-4 Fig.1-5

WARNING!

5. Raise the bar end, and tighten the chain (1)

by turning the tension adjustment bolt (2)

clockwise. To check proper tension, lightly

lift up the center of chain and there should

be about 0.5-1.0mm clearance between bar

and edge of drive link (3).

CAUTION!

PROPER TENSION IS EXTREMELY IM-

PORTANT! (Fig.1-4, 5)

6. Raise the bar end and securely tighten the

chain bar clamp nuts with the box wrench.

(Fig. 1-4)

7. A new chain will stretch so adjust the chain

after a few cuts and watch chain tension

carefully for the first 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.

During operation, hold chain saw firmly

with both hands. A single hand operation

may cause serious injury.

WARNING!

Never try to start engine without side case

securely fastened.

* Install the spiked bumper (1) (If so equipped)

to the unit with the two screws. (Fig.1-0)

1. Remove the side case by unscrewing two

guide bar clamp nuts, and install the guide

bar (1) onto the bolts (2), then push it toward

the sprocket (3) as far as it will go.

Make sure that the boss of chain tension

adjust bolt (4) fits into the hole of the bar (5).

(Fig. 1-1)

GB-6

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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.

Fueling

WARNING! (Fig.2-1B)

Always shut off the engine before refuel-ing.

Slowly open the fuel tank (1), when filling

up with fuel, so that possible over

pressure disappears.

Tighten the fuel cap carefully, after fuel-ing.

Always move the unit at least 3 m (10 ft.)

from the fueling area before starting.

Starting (Fig. 2-2, 2B, 3, 4, 4B)

WARNING!

When the engine starts with the throttle

lock engaged, the engine speed is high

enough to make the chain rotate

CAUTION!

Before starting, make sure chain brake is

disengaged (if so equipped) and that the

bar/chain does not touch anything.

1. Set ignition switch (1) to ON position. (Fig.2-2)

* Press the decompression valve (1) (if so

equipped. This valve will return when

engine starrted). (Fig. 2-2B)

2. Pull choke knob fully to choked position.

This will automatically lock the throttle in

starting position. (Fig. 2-3)

3. Pull recoil starter slowly until you feel

compression resistance, and then pull

briskly, taking care to keep the handle in

your grasp and not allowing it to snap back.

(Fig. 2-4)

4. When you hear the engine want to start,

with the safety trigger (2) pressed pull

throttle trigger (4). This will release the

throttle from starting position to run position

and will return the choke knob to run

position automatically. (Fig. 2-4B)

5. Pull recoil starter briskly again in the

aforementioned manner.

NOTE!

If engine does not start, repeat procedures

from 2 to 5.

6. After starting engine, pull throttle trigger a

couple of times and allow the engine about

2-3 minutes to warm up before subjecting it

to any load.

Starting warm engine

1. Set igntion switch to ON position. Press

decompression valve and pull recoil starter.

2. If engine does not start easily, press

decompression valve again, pull choke

knob fully and return it. This will lock the

throttle in starting position. Pull recoil starter.

NOTE!

If engine still does not start, follow the steps of

the cold engine starting.

Fuel (Fig. 2-1)

WARNING!

Fig. 2-1 Fig. 2-1CFig. 2-1B

Fig. 2-2 Fig. 2-2B

Fig. 2-4 Fig. 2-4B

Fig. 2-3

4. Operating procedures

Before fueling, clean the tank cap area care-

fully, to ensure that no dirt falls into the tank.

Make sure that the fuel is well mixed by shaking

the container, before fueling.

Chain oil (Fig. 2-1B)

Fill up with chain oil (2). Always use good

quality chain oil. When the engine is running,

the chain oil is automatically discharged.

NOTE!

When pouring fuel (1) or chain oil (2) into the

tank, place the unit with cap side up.

(Fig. 2-1B)

ADJUSTMENT OF CHAIN OIL SUPPLY

The chain oil quantity discharged through the

lubrication system is factory adjusted to the

maximum. Adjust the quantity in accordance

with the operating condition.

Turn the adjusting screw (1) counterclockwise

to decrease the quantity and turn it clockwise to

increase the quantity. (Fig.2-1C)

Do not try to turn the screw beyond level marks.

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 filling half the amount of fuel,

which is to be used. Then add the whole

amount of oil. Mix (shake) the fuel mixture. Add

the remaining amount of fuel.

Mix (shake) the fuel-mix thoroughly before filling

the fuel tank.

Fuel

GB-7

Chain brake operation (optional) (Fig. 2-5)

Chain brake (1) (If so equipped) is designed to

activate in an emergency such as kick-back

action. Please check to verify that it works

properly before use.

Application of brake is made by moving the

front guard towards the bar. During the chain

brake operation, even if the throttle lever is

pulled, the engine speed does not increase

and the chain does not turn. To release the

brake, pull up the chain brake lever.

How to confirm:

1) Turn 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 confirm brake operation. Operating level

varies by bar size.

In case the brake is not effective, ask our dealer

for inspection and repairs.

If the engine keeps rotating at high speed with

the brake engaged, the clutch will overheat

causing trouble.

When the brake engages during operation,

immediately release the throttle lever to stop

the engine.

WARNING!

Do not carry the machine with the engine

running.

Stopping (Fig. 2-6)

Decrease engine speed, and push ignition

switch to stop position.

WARNING!

KICKBACK DANGER (Fig. 2-7)

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 firm grip on the saw with

your right hand on the rear handle, your left

hand on the front handle and your thumbs

and fingers encircling the handles. Always

hold the saw with both hands during operation

and cut at high engine speed.

WARNING!

Do not overreach or cut above shoulder

height.

WARNING!

Use extra caution when felling, and do not

use the saw in 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

chainsaw user.

WARNING!

Do not stand in-line with chain when

cutting.

BASIC TECHNIQUES FOR MAKING FEL-

LING, LIMBING AND BUCKING CUTS

The intention of the following information is

to provide you with the general introduction

to wood cutting techniques.

WARNING!

This information does not cover all

specific situations, which may depend on

differ-ences 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

specific woodcutting problems in your

area,

This will make your work more efficient

and safer.

WARNING!

Avoid cutting in adverse weather condi-

tions, such as dense fog, heavy rain,

bitter cold, high winds, etc.

Adverse weather is often tiring to work in

and creates potentially dangerous condi-

tions such as slippery ground.

High winds may force the tree to fall in an

unexpected direction causing property

damage or personal injury.

CAUTION!

Never use a chainsaw to pry or for any

purpose for which 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.

Always cut at wide open throttle. A slow

moving chain can easily catch and force

the saw to jerk.

Fig.2-5 Fig.2-7Fig.2-6

GB-8

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Never saw completely through the trunk.

Always leave a hinge.

The hinge guides the tree. If the trunk is

completely cut through, you lose control over

the felling direction.

Insert 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 it 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. Always leave a hinge

on both sides of the center cut. (Fig. 2-7E)

Complete the felling cut by sawing around the

trunk as in the Fig. 2-7F.

WARNINGI

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.

Fig. 2-7B

Fig. 2-7C

Fig. 2-7D

Fig. 2-7F

Fig. 2-7E

WARNING!

Never use the saw with only one hand.

You cannot control the saw properly and

you may lose control and injure yourself

severely.

Keep the saw body close to your body to

improve control and reduce strain.

When cutting with the bottom part of the

chain the reactive force will pull the saw

away from you towards the wood you are

cutting.

The saw will control the feeding speed

and sawdust will be directed towards you.

(Fig. 2-7B)

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. 2-7C)

WARNING!

There is a risk of kickback if the saw is

pushed far enough so that you begin to cut

with the nose of the bar.

The safest cutting method is to cut with the

bottom part of the chain. Sawing with the

upper part makes it much more difficult to

control the saw and increases the risk of

kickback.

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 effect the intended

direction, such as:

Angle of the tree. Shape of the crown. 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 while felling.

Clear away shrubs and branches from

around the tree.

Prepare a path of retreat away from the

felling direction.

BASIC RULES FOR FELLING TREES

Normally the felling consists of two main

cutting operations, notching 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 sufficient 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. 2-7D)

GB-9

Fig.2-7G

Fig.2-7H

Fig.2-7J

Fig.2-7L

Fig.2-7K

Fig.2-7M Fig.2-7N

LIMBING

Limbing is removing the branches from a feller

tree.

WARNING!

A majority of kickback accidents occur during

limbing.

Do not use the nose of the guide 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. 2-7G)

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. Branches under

tension often snap up, so cut troublesome

branches 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 firm 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

should meet. (Fig. 2-7H)

THICK LOG, LARGER THAN GUIDE BAR

LENGTH

Begin by cutting on the opposite side of the

log. Pull the saw towards you followed by

previous procedure. (Fig. 2-7J)

If the log is lying on the ground make a boring

cut to avoid cutting into the ground. Finish with

a bottom cut. (Fig. 2-7K)

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 firm stance. Begin with a bottom cut.

The depth of the cut should be about 1/3 of

the log diameter.

Finish with an upper cut. The saw cuts should

meet. (Fig. 2-7L)

THICK LOG, LARGER THAN GUIDE BAR

LENGTH

Begin by cutting on the opposite side of the

log. Pull the 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. 2-7M)

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. 2-7N)

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.

GB-10

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Fig. 3-1 Fig. 3-3Fig. 3-2

MAINTENANCE, REPLACEMENT, OR RE-

PAIR OF THE EMISSION CONTROL DE-

VICES AND SYSTEM MAY BE

PERFORMED BY ANY NON-ROAD ENGINE

REPAIR ESTABLISHMENT OR

INDIVIDUAL.

Carburetor adjustment (Fig. 3-1)

WARNING!

Never start the engine without the complete

clutch cover. Otherwise the clutch can

come loose and cause personal injuries.

In the carburetor, fuel is mixed with air. When

the engine is test 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 filter is clean. When the idle

speed is correct, the cutting attachment will not

rotate. If adjustment is required, close (clock-

wise) the T-screw, with the engine running,

until the cutting attachment starts to rotate.

Open (counter-clockwise) the screw until the

cutting attachment stops. You have reached

the correct idle speed when the engine runs

smoothly in all positions well below the rpm

when the cutting attachment starts to rotate.

If the cutting attachment still rotates after idle

speed adjustment, contact HITACHI dealer.

WARNING!

When the engine is idling the cutting

attachment must under no circumstances

rotate.

NOTE!

Some models sold 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.

5. Maintenance

For models that equipped with low and high

speed adjustments; carburetors are pre set at

the factory Minor adjustments may optimize

performance based on climate, altitude, etc.

Never turn the adjustment screws in increments

greater than 90 degrees, as engine damage

can result from incorrect adjustment If you are

not familiar with type of adjustment-assistance

HITACHI dealer.

Air filter (Fig. 3-2)

The air filter (1) must be cleaned from 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 filter daily or more often if working

in exceptionally dusty areas.

Cleaning the air filter

Remove the air filter cover (2) and the filter (1).

Rinse them in warm soap suds. Check that the

filter is dry before reassembly. An air filter that

has been used for some time cannot be

cleaned completely. Therefore, it must regu-larly

be replaced with a new one. A damaged filter

must always be replaced.

Spark plug (Fig. 3-3)

The spark plug condition is influenced by:

An incorrect carburetor setting.

Wrong fuel mixture (too much oil in the

gasoline)

A dirty air filter.

Hard running conditions (such as cold

weather).

These factors cause deposits on the spark

plug electrodes, which may result in malfunc-

tion and starting difficulties. If the engine is

low on power. difficult to start or runs poorly at

idling speed, always check the spark plug first.

If the spark plug is dirty, clean it and check the

electrode gap. Readjust if necessary. The

correct gap is 0.6 mm (.024"). The spark plug

should be replaced after about 100 operation

hours or earlier if the electrodes are badly

eroded.

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.

GB-11

Fig.3-4

Fig.3-10

Fig.3-5

Fig.3-6

Fig.3-8 Fig.3-9

Fig.3-7

Oiler port (Fig. 3-4)

Clean the chain oiler port (1) whenever

possible.

Guide bar (Fig. 3-5)

Before using the machine, clean the groove

and oiler port (1) in the bar with the special

gauge offered as an optional accessory.

Side case (Fig. 3-6)

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.

Fuel filter (Fig. 3-7)

Remove the fuel filter from the fuel tank and

thoroughly wash it in solvent. After that, push

the filter into the tank completely.

NOTE!

If the filter is hard due to dust and dirt, replace

it.

Chain oil filter (Fig. 3-8)

Remove the oil filter and thoroughly wash it in

solvent

Cleaning the cylinder fins (Fig, 3-9)

When wood chips are caught between cylinder

fins (1), the engine may overheat, resulting in

lower output.To avoid this, always keep

cylinder fins and fan case clean.

Every 100 operating hours, or once a year

(more often if conditions require), clean fins

and external surfaces of engine of dust, dirt

and oil deposits which can contribute to im-

proper cooling.

Cleaning the muffler (Fig. 3-10)

Remove the muffler (1) and spark arrestor (if so

equipped), and clean out any excess carbon

from the exhaust port or muffler inlet every 100

hours of operation.

For long-term storage

Drain all fuel from the fuel tank. Start and let

engine run 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

distribute oil. Cover the unit and store it in a dry

area.

GB-12

G

B

Fig.3-11 Fig.3-12 Fig.3-12B

Decompression valve (Fig. 3-11)

After extended period of use decompression

valve may not close or come out due to the

builtup carbon inside of the valve mounting hole

(1). To remove the carbon, take the following

steps.

1. Remove airfilter cover, cylinder cover, spark

plug and decompression valve from the unit.

2. Viewing through the spark plug hole, crank

down the piston to the lowest position by

pulling recoil starter slowly.

3. Prepare ø2.5 mm to ø2.8 mm drill bit.

4. Lay down the unit facing the valve mounting

hole downward so that the removed carbon

will not drop into cylinder.

5. Insert the drill bit into the hole turning slowly

so that the bit will scrape off the built up

carbon.

6. Make sure to remove the drill bit and pull

recoil starter several times.

7. Reinstall the disassembled parts.

Icing protection system (Fig. 3-12, 12B)

This system is to protect carburetor from icing

when the unit is operated in winter time.

1. When you need icing system work, remove

airfilter cover (1). Pull out the shutter (3) from

inside the airfilter cover and reinstall it in

winter time position (5) by turning half-way.

This will allow heated air to flow from cylinder

side to carburetor cabin through the opening

(2).

NOTE!

When winter time has been over and carburetor

will not suffer from icing, make sure that the

shutter is reinstalled in ordinary position (4).

NOTE!

When the unit is used in very cold weather, it is

advisable to cover the slits of the halfway down

of recoil starter side with glue tape (1) so that

snow dust will not get into fancase. (Fig. 3-12B)

GB-13

Fig. 4-1

Fig. 4-2

Fig. 4-3

Fig. 4-4

Fig. 4-5

Fig. 4-6

WARNING!

Gloves should be used when sharpening

chain.

WARNING!

Be sure to round off the front edge to

reduce the chance of kickback or tie-strap

breakage.

1. Top plate

2. Working corner

3. Side plate

4. Gullet

5. Heel

6. Chassis

7. Rivet hole

8. Toe

9. Depth gauge

10. Correct angle on top plate (degree of angle

depends on chain type)

11. Slightly protruding "hook" or point (curve on

non-chisel chain)

12. Top of depth gauge at correct height below

top plate

13, Front of depth gauge rounded off

CHAIN SHARPENING Parts of a cutter.

(Fig. 4-1, 2)

LOWERING DEPTH GAUGES WITH A FILE

1) If you sharpen your cutters with a file holder,

check and lower the depth.

2) Check depth gauges every third sharpening.

3) Place depth gauge tool on cutter. If depth

gauge projects, file it level with the top of the

tool. Always file from the inside of the chain

toward an outside cutter. (Fig. 4-3)

4) Round off front corner to maintain original

shape of depth gauge after using depth

gauge tool. Always follow the recommended

depth gauge setting found in the

maintenance or operator manual for your

saw. (Fig. 4-4)

GENERAL INSTRUCTIONS FOR FILING

CUTTERS

File (1) cutter on one side of the chain from the

inside out.

File on forward stroke only. (Fig. 4-5)

5) Keep all cutters the same length. (Fig. 4-6)

GB-14

G

B

6) File enough to remove any damage to

cutting edges (side plate (1) and top plate

(2)) of cutter. (Fig. 4-7)

SHARPENING ANGLES FOR SHARPENING

SAW CHAIN (Fig. 4-7B)

Maintenance schedule

Below you will find some general maintenance

instructions. For further information please

contact HITACHI dealer.

Daily maintenance

Clean the exterior of the unit.

Clean the chain oil filter port.

Clean the groove and oil filter 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 sufficiently

tightened.

Make sure that the chain transport guard is

undamaged and that it can be securely

fitted.

Check that nuts and screws are sufficiently

tightened.

Weekly maintenance

Check the starter, especially cord and return

spring.

Clean the exterior of the spark plug.

Remove the spark plug and check the

electrode gap. Adjust it to 0.6 mm (.024 ") or

change the spark plug.

Clean the cooling fins on the cylinder and

check that the air intake at the starter is not

clogged.

Clean the air filter.

Monthly maintenance

Rinse the fuel tank with gasoline, and clean

fuel filter.

Clean chain oil filter.

Clean the exterior of the carburetor and the

space around it.

Clean the fan and the space around it.

Clean the muffler of carbon.

Fig.4-7

Fig.4-7B

GB-15

6. Specifications

Engine Size (ml)

Spark Plug

Fuel Tank Capacity (mI)

Chain Oil Tank Capacity (mI)

Dry Weight (kg)

(Without guide bar and chain)

Guide bar length (mm)

Chain pitch (mm)

Chain gauge (mm)

Sound pressure level (dB(A)) by ISO

Sound power level (dB(A)) by ISO ......... Lw measured

Sound power level (dB(A)) by 2000/14/EC ..... LwA

112

Vibration level (m/s

2

) by ISO

Front handle ................................................... 8.9

Rear handle .................................................... 6.6

MODEL CS35EK/CS38EK/CS40EK/CS45EK

............................................... 39

....................................................... NGK BPM7A or

NGK BPMR-7A

or equivalent

................................... 400

............................ 245

................................................ 4.0

....................................... 350-450

(14"-18")

.............................................. 8.25 (0.325")

............................................ 1.27 (0.05")

...... LpA

100.5

..................................... 1.76@9500

......................... 14,500

............................ 2,800

.........................................

.............................................. 95 VP

(Oregon)

............................ 27.9

.......................... 7

110.4

Max. engine power

by ISO 7293(kW)

Max. engine speed (min

-1

)

Idle engine speed (min

-1

)

Type of guide bar

Type of chain

Max. chain speed (m/sec)

Sprocket (number of teeth)

NOTE :  Equivalent noise level/vibration levels 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.

GB-16

G

B

Engine Size (ml)

Spark Plug

Fuel Tank Capacity (mI)

Chain Oil Tank Capacity (mI)

Dry Weight (kg)

(Without guide bar and chain)

Guide bar length (mm)

Chain pitch (mm)

Chain gauge (mm)

Sound pressure level (dB(A)) by ISO

Sound power level (dB(A)) by ISO ......... Lw measured

Sound power level (dB(A)) by 2000/14/EC ..... LwA

112

Vibration level (m/s

2

) by ISO

Front handle ................................................... 8.0

Rear handle .................................................... 8.6

MODEL CS33EL/CS38EL/CS40EL/CS45EL

............................................... 43

....................................................... NGK BPM7A or

NGK BPMR-7A

or equivalent

................................... 400

............................ 245

................................................ 3.9

....................................... 330-450

(13"-18")

.............................................. 8.25 (0.325")

............................................ 1.27 (0.05")

...... LpA

100.8

..................................... 2.09@10000

......................... 14,500

............................ 2,800

.........................................

.............................................. 95 VP

(Oregon)

............................ 27.9

.......................... 7

108.3

Max. engine power

by ISO 7293(kW)

Max. engine speed (min

-1

)

Idle engine speed (min

-1

)

Type of guide bar

Type of chain

Max. chain speed (m/sec)

Sprocket (number of teeth)

NOTE :  Equivalent noise level/vibration levels 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.

GB-17

GB-18

Ägarhandbok

Läs noga igenom bruksanvisningen

innan maskinen tas i bruk.

CS35EK/CS38EK

CS40EK/CS45EK

CS33EL/CS38EL

CS40EL/CS45EL

SE-1

S

E

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