Stihl 056 User Manual

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Mau,ual/'QwI.n

Important Safety Precautions

Do not operate a chain saw when you are

fatigued. the saw chain is not contacting anyUse safetyfootwear, snug-fitting clothing,

2. and eye, hearing and head protection devices.

Use caution when handlingfuel. Movethe the rear, and the muffler away from your

3. chain saw at least fueling point before starting the engine.

Do not allow other persons to be near the maged, improperly adjusted, or is not

chain saw when starting or cutting with completely and securely assembled. the chain saw. Keep bystanders and animals out of the work area. when the throttle trigger

feet (3

from the body.

Before you start the engine, make sure thing.

Carry the chain saw with the engine stopped, the guide bar and saw chain to

10.

Do not operate a chain saw that is da-

Be sure that the saw chain stops moving

released.

Do not start cutting until you have a clear

5. work area, secure footing, and a planned retreat path from the falling tree.

Holdthechain saw firmly with both hands, material may catch the saw chain and

the right hand left hand on the front handle, when the balance. engine is running. Use a firm grip with thumbs and fingers encircling the chain saw handles.

Keep all parts ofyour body away from the not be struck when the tension saw chain when the engine is running. wood fibers is released.

the rear handle and the be whipped toward you or pull you off

11.

Shut off the engine before setting it down.

12.

Use extreme caution when cutting small sizebrush

13.

When cutting a limb that is undertension be

alert for spring back so that you will

continued on the back inside cover

ana saplings because slender

the

STIHL 056 AVelectronic, 056 AVelectronic Qui,ckstop

Congratulations!

You are the chain service. faction from your STIHL chain saw, it is important that you read and understand the tions before using your saw. Contact your STIHL Dealer the STIHL Distributor for your area if youdonot understand any of the instructions or warnings in this Manual.

This Manual contains warnings regarding your saw, operating and safety instructions for all STIHL 056 series power saws.

arning!

Because a chain saw is a high-speed some special safety precautions must be observed as with

any

other

dents. Careless

fatal injury. It

is important that you fully understand the contents of this Manual and that you allow only persons this Manual to operate your chain saw.

Pay special attention to the cutting techniques and safety precautions outlined on pages 6 to

owner

of a precision-manufactured STIHL

saw

designed to give you long and dependable

receive

power

maximum

maintenance

saw to reduce the risk of personal acci-

improperuse

performance and satis-

and safety

wood-cutting

may

cause

seriousoreven

who

18.

precau-

tool,

understand

Operating Instructions Sharpening and Maintenance

Contents

Controls Fuel Chain Oil Mounting the Cutting Attachment Chain Brake Safety Precautions Starting Oil Quantity Control Cutting

Replacing the Chain Sprocket Air Filter Carburetor

Rewind Starter Oil Inspection General Maintenance Specifications

Sharpening and Maintenance

Attachment

Window

Saw

Saw Chain

Chains

25 26

27 29 29

STIHL's philosophy is to continually improve all of its products. Asa result, engineering are made from time-to-time. Written notices relating to such changes are sent to STIHL Dealers and are available to you. of your saw differs from those described please contact mation and assistance.

the operating characteristics or the appearance

your

local STIHL

changes

Dealer

and improvements

this Manual,

for updated infor-

STIHL"

Andreas Stihl Postfach

0-7050

1760

Waiblingen 1

Controls

Starter

grip-----~

......

o;;;::_-

--Starting

r----~.Safety

throttle lock

Fuel tank cap _

Spark plug with

plug terminal

Stop switch

......

i--------

____

Throttle trigger

Hand guard

Fuel

tank

cap

open

-------

------

-----.

-- --

------

.....

_----.

-----

--- -

-----

--_.

::::-'==-====

;~;~~;§=

Chain

Oil filler

cap

Oil

open

Your two-stroke engine is powered by a mixture of gasoline and engine oil.

Only regular gasoline may

octane gasoline as permanently damage the carburetor diaphragms.

Only use STIHL two-cycle engine oil or other branded twocycle engine oils for mixing. The mix ratio is 1:40 to 40 parts regular gasoline) with STIHL two-cycle engine oil or 1:25 for other branded engine oils.

Important: Always shake mixture vigorously before fueling.

used. Never use high

contains benzol which would

pari oil

fuel can

The service life of the cutting attachment (Oilomatic chain

and guide bar) depends of the lubricating oil.

Never use waste oil for this purpose!

Always use the chain lubricating oil approved by STIHL and appointed dealers.

If special chain lubricating oil is not available, one of the

high-duty, single grade engine oils listed below may be used

emergency, depending

temperature. Outside temperature +10°C

Outside temperature + Outside temperature

Always top up with chain oil when you refuel. Carefully clean the area around the filler caps before opening and

make sure that no dirt falls into the tank while you are refueling.

good lubrication and the quality

1Q°C

-10°C

+40°C:

-10°C:

-30°C:

SAE 30 SAE 20 SAE 20 W or

SAE

the outside

Mounting the Bar and Chain

Removing the chain sprocket cover

The guide bar and Oilomatic chain are supplied separately

for safety reasons.

mountthem, first unscrew the two collar nuts

studs and take off the chain sprocket cover (2).

a Quickstop model, it

necessary to disengage the chain brake before taking off the sprocket cover; pull the hand guard back towards the handlebar.

Now

tensioning nut (3) - behind inner side plate - by turning the

(4)

tensioning screw

counterclockwise (to the left)tothe

end of its thread.

(1)

from the

you have

back off the chain

Top: Backing off tensioning nut

Center: Filling chain on sprocket Bollom: Peg

locating hole - culling edges must face bar nose

Fit the slot of the guide bar over the studs (5) so that the

peg of the tensioning nut (6) engages

the lower locating

hole (7). Starting at the sprocket, fit the Oilomatic chain on the guide

barso that the cutting edges on the top of the bar are facing the bar nose.

Push the sprocket cover (2) onto the studs Quickstop models only) engage the end of the lever (8) the slot on the hand guard.

4 Refit collar nuts

(1)

and screw them down finger-tight. Now

(5) and (on

Top: Tensioning the chain

Bottom: Checking chain tension

Chain Brake (Quickstop model

Chain brake engaged

The chain brake is actuated by means of the front hand guard.

on,ly)

STINt.

tension the Oilomaticchain by turning the tensioning screw

(4)

clockwise and watching that the drive link tangs are

properly located Hold the bar up and turn tensioning screw (4) until the Oilomaticchain fits snugly against the underside of the

While still holding the bar nose up, tighten down the collar

nuts

(1)

securely.

The Oilomatic chain

snugly against the underside of the bar but can still be pulled easily along the bar by hand.

the groove on the underside of the bar.

bar.

correctly tensioned whenitfits

Engaging

When the hand guardismoved towards the nose of the guide bar the actuating lever automatically unlatches the brake lever and the spring-assisted brake band

round the clutch drum at the same instant. This causes the

sawchaintobebrought

Releasing

The locked saw chain must be released before cutting can be continued. the handlebar - this disengages the brake band from the clutch drum.

Important: chain brake may be engaged only when the saw The chain brake is subject to normal wear. It is therefore

necessary to have

trained personnel, (STIHL servicing dealer) to insure that it

is always

the

chain

brake

clamped

astandstillandlockedin position.

the

chain

brake

do this, pull the hand guard back against

Apart from starting and emergencies, the

regularly serviced and maintained by

good working order.

idling.

Safety Precautions

All safety precautions that are generally observed when

working with an axe operation of chain saws. However, because fast-cutting power tool, there are additional safety precautions that must be observed.

If this is your first STIHL chain saw, have your dealer show

you how

the operation of power saws.

Observe all applicable local safety regulations, standards

and ordinances. Minors should not be allowed to use a chain saw. Children

and anima'is should not be allowed

chain saw is

Store

Do not lend your chain saw without the Owner's Manual. Be sure that anyone using your saw understands the information contained in this Manual. .

There are three factors involved saw: the operator, the saw and the use of the saw.

operate it, or attend a special courseoftraining

use. Never let the saw run unattended.

itina locked place away from children.

a hand saw also apply to the

the area where a

the safe use of a chain

THE

OPERATOR-

physical condition and proper clothing

is a

Your condition and mental health; and not under the influence of any substance (drugs. alcohol, etc.) which might impair vision, dexterity or judgment.

Working with any chain saw can be strenuous.

any condition that mi9'ht be aggravated by strenuous work,

check with your doctor before operating a chain Be alert - Avoid operating the chain saw when you are

fatigued. If

Your proper clothing - Clothing must be sturdy and snug-fitting, but allow complete freedom of movement.

Avoid loose-fitting jackets, scarfs, neckties, jewelry, flared or cuffed pants, or anything that could become entangled with the saw or brush.

Good footing

sturdy boots with non-slip soles. Steel-toed safety boots are recommended.

You

must beingood physical condition

yotl'-become tired, take a break!

most importandinchain saw work. Wear

you have

saw.

YOUR SAW

STIHL-Oilomatic-chain, guide bar and sprocket must match each other and the engine unit.

Attachments - Only attachments supplied by STIHL or expressly approved STIHL saw models are authorized. Although certain unauthorized attachments are useable with the STIHL powerhead, their use mayinfactbeextremely dangerous.

Assembly -Ifyour saw is not assembledatthe time of purchase, see page 4 for instructions.

ST,IHL

for use with the specific

Heavy-duty, non-slip gloves improve your grip and protect your hands.

Proper eye protection

goggles or a face screen are recommended. Their use

reduces the risk of eye injury.

Continuou~

using a chain saw may cause hearing impairment. Protect

your hearing with sound barriers, either ear plugs or noise-

suppressing ear muffs.

Wear

exposure to the high noise levels involved

approved safety hard hat to protect your head.

a must. Non-fogging, vented

Inspection starting and properly tensioned. See page 4 for guide bar and chain mounting.

Make sure all the controls and safety devices (see

illustration) are working properly.

never operate a chain saw that

adjusted or not completely and securely assembled.

Warning!

Never remove deactivate or tamper with any safety device

your

You

should always"lnspect your saw before

it.

Insure that bar and chain are securely mounted

reduce riskofinjury,

damaged, improperly

saw.

USEOFTHE

SAW

Fueling - Your STIHL chain saw uses

mixture for fuel (see page 3).

Always shut off the engine and allow it to cool before

refueling. Remove fuel cap slowly to release possible fuel tank pressure.

Warning! Gasoline

a highly flammable fuel. Use extreme caution when handling gasoline or fuel mix. Do

not smoke or bring any fire or flame near the fuel.

Select bare ground for fueling and move at least10feet (3m)from fueling spot before starting the engine.

Fuel and operate your chain sawinwellventilated areas, outdoors only.

Wipe off any spilled fuel before starting your saw and

check for leakage - also during operation.

Important!

the controls listed

You

should now understand the function of all

figures page 7 - stop switch, throttle

trigger, safety throttle lock, starting throttle lock, choke,

Quickstop (if your saw was purchased with this option).

oil-gasoline

Starting -

Your chain saw is a one-person

saw.

Start and operate your saw without assistance. For safety reasons always observe starting procedure described on page

Warning!

19.

At correct idle speed, chain should not turn. For directions

to adjust idle speed, see page 26.

Dot not use a saw with incorrect idle speed adjustment. Have your STIHL Dealer check it out and make proper adjustments or repairs. After a saw with a

new chain

started, switch engine off and recheck chain tension. Proper chain tension is very important at all times.

Warning!

Never touch a rotating chain with your hand or any part of your body.

stop engine, move stop switch to "STOP" position.

Reactive forces, including kickback

Warningl

Reactive forces, including kickback canbedangerous!

any chain saw, the powerfUl force used to cut wood can

be reversed (and work against the operator).Ifthe rotating

chainissUddenly stopped by contact with any solid object or a pinch, the reactive forces instantly occur. These reactive forces may resultinloss of control which cause serious or fatal injury.

understanding of the

may,inturn,

causes of these reactive forces may help you avoid loss of control.

The most common reactive forces are kickback, pushback

and pull-in:

Kickback:

Kickback occurs when the nose of the bar and especially

the upper quadrant contacts a solid object or is pinched.

The chain

opposite direction flinging the bar towards the operator, who may suffer severe or fatal injury. lit

most frequently occurs during limbing.Italso occurs when the tip of the gUide bar unintentionally contacts solid material or used to begin a plunge or boring cut.

The best protection from personal injury that may result

from kickback is to avoid kickback situations:

Be aware of the location of

any cut.

Be alert for shifting of log or other forces that may cause the cut to close.

Use extreme caution when re-entering a previous cut.

Do experienced with these cutting techniques.

Never bring the tip of the barincontact with any object.

Cut only one log at a time.

Begin cutting at full throttle.

Maintain saw chain properly. Cut with a correctly

sharpened properly tensioned chain at all times.

stopped, causing a rotational forceinthe

inanuncontrolled arc

pinched unexpectedly,

incorrectly

tRe

guide bar nose during

not attempt plunge cuts or bore cuts if you are not

Pushback:

Pull-in:

Pushback occurs when the chain suddenly stopped and the reaction drives the saw straight back toward the operator causing loss of saw control. It most frequently occurs when the top of the chain is pinched

or caught

top of the bar is used for cutting.

avoid pushback:

Be alert to forces or situations that may cause material to

Do not cut more than one logata time.

3. Do not twist the saw when withdrawing the bar from a plunge cut or under buck because the chain can catch.

the cut or contacts a foreign object when the

pinch the top of the chain.

the top of the bar

Pull-in occurs when the bottom of the chain stopped. The bottom of the chain stops when it is pinched,

caught or encounters a foreign object

reaction of the chain pulls the saw forward, causing the

operatorto lose control. Pull-in frequently occurs when the

bumper spike of the saw is not held securely against the tree or limb and when the chain is not rotating at full speed before it contacts the wood.

avoid pull-in, always start a cut with the chain rotating full speed and the bumper spikeincontact with the material. Pull-in to open the kerf or cut.

best counter any reactive forces, always maintain proper balance, secure footing, a firm grip watch what and where you are cutting.

may also be prevented by using wedges

suddenly

the wood. The

the saw

and

STIHL has developed a chain stopping system designed

to reduce the risk of injury

device many STIHL saws.These devicesdo not prevent kickback, but will stop the chain operator's left hand

When a kickback occurs, the bar of the saw rotates up and around the front handle. The left hand, when properly gripping the front handle engages the Quickstop lever. This activates the Quickstop and stops the chain (see illustration).

called a Quickstop. The Quickstop is available

isinposition to activate the Quickstop.

a kickback situation. The

kickback situations if the

However, even if your saw has a "Quickstop", it does not guarantee that you will not therefore, you should observe all of the precautions to prevent kickback discussed previously.

Transporting your chain saw

By Vehicle: When transporting

chain covered with a scabbard. Properly secure your saw to prevent turnover, fuel spillage and damage the saw.

injured by a

"kickback"

a vehicle, keep bar and

and,

By Hand: When carrying your must be stopped, and the saw must be

position. Grip the front handle and place the muffler at the

side away from the body. The scabbard should be over the cutting attachment. When carrying your saw up-grade, the bar should be behind you. When carrying it down-grade, place the bar the saw.

Warning!

Carrying a chain saw with the engine running dangerous. Accidently acceleration of the engine can cause the chain to rotate.

front of you,soyou won't slip and fall onto

sa!/! by hand, the engine

the proper

extremely

Cutting instructions

Always hold the saw firmly with both hands when the engineisrunning. Place your left hand on front handle bar and your right hand on rear handle and throttle control.

Wrap your fingers tightly around the handle 'bars, keeping

the handle bar cradled between your thumb and forefinger.

With your hands

absorb the push, without having it slip out of your grip. See page sure your chain saw handle and grip are and free of moisture, pitch, oil or grease.

this position, you can best oppose and

pUll

and kickback forces of your saw

Make

good condition

Warning!

Do not cut any material other than wood or wooden objects.

2. Use your chain saw for cutting only. It for prying or shoveling away limbs, roots or other objects.

When sawing, make sure that the saw chain does not

touch any foreign materials such as rocks, nails and the like. Such objects may be flung off, damage the saw chain firm foothold.

cause the saw to kick back. Always maintain a

not designed

Warning!

Never work on a ladder, in a tree or on any other insecure support. Never use the saw overhead or with one hand.

Position the chain sawinsuch a way that your body is

clear of the cutting attachment. Stand

the left of cut

while bucking (see illustration).

reduce risks of injury all persons, including left-

handers, should follow this instruction.

not try to do any felling or buck·ing unless you are

trained in this work.

Operate the saw under good visibility and daylight conditions only. Work calmly and concentrate on your

job. Do not endanger other persons. Before felling,

ascertain

anybody else may be endangered by the

falling tree. Put off the work when the weather is windy,

stormy or rainfall is heavy. Find some good shelter from

falling limbs or trees under such conditions. Never

operate a chain saw near another person. When felling, maintain a distance of at least

lengths from the nearest person.

Note: The noise of

your engine may drown any warning call.

Use a strong, rigid saw horse when cutting thin wood, but do not have another person hold the material or

assist

any other way. Never

hOtd

down the wood with

your foot! .

Do not cut limbs with the nose of the guide bar,

as it may result

kickback. Be especially careful with

small, tough limbs, which may easily catch the chain. Before the saw begins to pinch, stop the engine and

insert a wedge to open the cut. Use a tackle, rope winch or tractor, if necessary. Wedges should wood, light alloy or plastic - never of iron or steel, they can cause kickback and damage to the chain.

tree

Plunge cut

Plunge cutting is donebystarting the cut with the lower portion of the bar-tip and then movingina straight forward path.

Plunge cuts with a chain saw are made primarily when

using the heart-cut technique, if the log diameter is larger than double the length of the guide bar and also when felling oblique trees. They are also useful for strain relief bucking. Plunge cutting requires extreme cautiony!

Apply the guide bar obliquely to the log rather than perpendicularly:""Plunge penetrates the log

actual plunge cut. Keep the saw from kicking back.

the guide bar nose until the bar

the double of

'its

width. Then do the

_=-

--.-.--~=---=----

="+=:--4·Tenslon

-++:-1'~e~s~r~1~~_c....

Crosscut

side-~'::--~-

-==:z...-~

Lying or standing timber under strain should be first cut at the compression side and then cut through the tension side. This is important to prevent the saw from pinching or kicking back.

s nlng!

This cutting methods are extremely hazardous and should only be attempted by experienced cutters.

Special Precautions:

When felling, always keep to the side of the falling log.

Then walk away sideways on a pre-planned safe escape

and watch out for falling limbs (see page 16).

Take extreme care in wet and freezing weather (rain, snow

and ice) and when working on slopes or uneven ground.

When felling and bucking on a slope, the chain saw

operator must stand on the up-hill side. Watch out for rolling logs. Increased danger of slipping exists on freshly debarked logs.

Avoid stumbling on obstacles such as stumps, roots or rocks and watch out for holes or ditches. Do not stand on a log while limbing it - you may slip or the log may roll. Do not underbuck freely hanging limbs. A pinch may result

faJl,

or the limb may

Be extremely careful with incompletely fallen trees and

logs which are poorly supported. saw aside and pull the tree down with a cable winch, block and tackle or tractoronly. This is particularly true for down" areas where the logs, limbs and roots are tangled after heavy storms. Working hazardous. Drag the logs into a clear area before cutting. Pull out exposed and cleared logs first.

causing loss of saw control.

such cases, set the

blowdown areasisseverely

"blow-

Warning! Only experienced woodcutters should work

blowdown areas. Shattered wood should be cut very carefully. Sharp slivers

of wood may be caught and flung operator of your saw.

When felling in the vicinity of roads, railways and power

lines, etc., take extra precautions. Inform the police, utility company or railway authority before beginning to cut.

the directionofthe

Before felling a tree, carefully determine the intended

direction

tree, any unusually heavy limb structure, surrounding trees

and obstancles. Clearthe work area at the base ofthe tree. Then, establish a path of escape and remove all obstacles. This path should be opposite to the direction of the falling tree and at a 45° angle. selected. Place all tools and equipment a safe distance

away from the tree, but not on the escape path. When the tree starts to fall shut of the power and quickly

move away from the cutting area.

First clear the tree base and work area from interfering 'limbs and brush

Remove all dirt and pebbles, as they could dull the saw

chain. The more thoroughly you clean it, the longer the

chain will stay sharp. Then, determine the placement of the

felling notch. If the tree has large buttress roots, cut into the

largest buttresses vertically first (horizontally next) and

remove; smaller ones may be removed later.

If you apply the first cut to the largest buttress, you will

obtain uniformly high planes of cut. The first cut must

made low because too high buttresses may obstruct

hauling later on.

whichitis to fall. Check the natural lean of the

alternate path must also

and clean its lower portion with an axe.

Felling notch

Hinge

Felling notch

Hinge

---Jlt.-

--+

1i=:===:::;li~

......

- Felling cut

The felling notch

which the tree will fall.Itis

tion the felling direction and should be as close to the ground as possible. Cut the felling notch to a depth of about one fourth of the trunk diameter.

is deep. Make the felling notch very carefully.

than

The next step is to make the so-called splint cut at either

side of the log. These cuts are designed to prevent tearing of the splint wood when the log falls and are recommended for softwoods felled during the summer. Make the splint notches not deeper than one guide bar width and locate them at the same level

Begin the felling cut higher than the felling notch and proceed horizontally under all circumstances. For felling small trees, apply the chain saw with its spikes directly behind the uncut thickness of wood serving as a hinge and cut with a swing motion, so that the spikes contact the log one after the other. The uncut hingewood should one-tenth of the log diameter. Look for saw dust discoloration or easy cutting which indicate internal rot.

not cut through the uncut hingewood because you could lose control of the direction of the fall. Drive wedges into the felling cut where necessarytocontrol the direction of the fall.

the first step that determines the direc-

made at a right angle to

'It

shouldbeinnocase higher

the intended felling cut.

about

Warn

and should onlybeattemptedbyexperienced cutters.

When felling old timber with a diameter larger than the

cutting length of the guide sectioning method. Make the first cut with the guide bar fanningintowards the hinge wood. Use the spikes to act as a pivot and avoid repositioning the saw more often than absolutely necessary. When repositioning for the next cut, keep the guide bar fully engaged the line of the felling cut from wandering

The following cutting methods are hazardous

bar,

reposition the saw using the

the kerf to prevent

off.

Forthe last cut, 17

apply the chain saw directly behind the uncut band and

swing it so the hinge wood

the saw around the log with the guide bar

position.

not cut. Make sure to move

a horizontal

If the log diameter is exceptionally large,

wood may be left uncut. In such instances, make a heart-

shaped cut by plunging the saw into the felling cut.

This technique can also be used with "problem" timber

(oak or beech) to prevent tough heartwood from tearing and

ensure proper control of the felling direction. With deciduous woods, the heart cut is often performed too, in order

ease the stressinthe log and to prevent splinters

the middle of the uncut band from being torn out.

Maintenance and Repair

not attempt any maintenance or repair work not

described performed at your STIHL Service Shop. Always stop the engine before doing any service or repair work. War

not modify achain sawinany way as this is dangerous.

Check the tank caps for tightness regularly and inspect the ignirtion cable and the spark plug connector. The spark plug should be the specified make and type. Check the AV-buffers

Check the condition of the muffler to prevent fires and excessive noise that could result spark arrestor type of muffler and do not touch it with your

bare skin. Be aware of the hazard of forest fires, especially during the dry season.

Check the chain catching bolt for wear and replace it when-

ever it becomes damaged.

the instruction manual. Have such work

and.

replace the buffers as a complete set only.

a piece of heart-

hearing loss. Use a

Ing

Observe the information given

31)

tions (page saw chain and guide bar always be

tensioned and well-lubricated. Cutter teeth must be of

equalleng,th, height, sharpness and shape.

Make sure that the depth gauges are properly and equally

set and shaped more readily and is thrown off the guide bar more easily. Newly replaced chain links must be of the same make type as the originals and must be filed down to the same shape and wear pattern as the remaining components. Make sure and repairing of a STIHL chain, use only recommended STIHL tools. Inspect the chain for cracks and broken parts regularly- a poorly maintained chain may cause kickback.

The engine must be shut off before checking and adjusting

chain tension or changing a chain. Wear gloves when working with a saw chain or checking a saw chain for proper tension.

to ensure safe use and correct care of the

good condition, correctly sharpened, properly

reduce kickback. A dull chain stretches

theJe

~re

cutter teeth missing. For the filing

the chain filing instruc-

(page 22). A saw chain must

and

Starting

Chain

brake

engaged

Start your saw without assistance of a second person. Keep other people clear of the general work area of the saw. Place the chain saw on firm ground or other solid surface in

an open area. Have a good balance and secure footing. Be absolutely sure that guide bar and chain are clear of you and all other obstruction and objects, including the ground. When engine starts (in start position), engine

speed will be fast enough for the clutch and turn the chain.

engage sprocket

Top:

Center: Bottom:

Stop

switch

Choke

leverin"CHOKE"

Choke

lever

away

from

"STOP"

position

from

"CHOKE" (warm-start)

-,,- 3

(cold-start)

Starting procedure

Engage the chain brake on Quickstop machines by

(1)

pushing the hand guard

2. Move stop switch (2) away from

3. A cold engineisstarted with the choke closed, slide

choke lever (3) to

A warm engine, or one that has only been stopped for

a brief period, choke lever

Set throttle trigger to start position: Depress at first safety throttle lock (4), throttle trigger (5) and starting throttle lock (6). Next release throttle trigger (5) and then starting throttle lock (6).

"CHOKE

started with the choke open - slide

(3)

away from

toward the bar nose.

"STOP".

"CHOKE

.-'--

Starting-throttle position

Top: Starting

Center: Chain brake disengaged Boltom: Stop switch in

"STOP"

position

5.Tostart the engine, hold saw firmly on the ground with

(7)

your left hand around the handlebar

and put the toe

of your right footintothe rearhandle (8) and pressdown.

6. Pull out starter grip slowly with your right hand until you

feel a definite resistance and then give

a brisk, strong

pull.

The starter rope should not

pulled out more than

80 cm (30 in.) as thereisotherwise a risk of it breaking.

not allow starter rope to snap back. Holditvertically

130

thatitcan rewind correctly.

Once the engineisrunning, release the starting throttle

lock (6) immediately

briefly squeezing the trigger so

that the engine can settle down to idle speed.

On Quickstop models the chain brake has to be disengaged before you can start cutting - pull hand guard back toward the handlebar

(7).

(1)

___

5T1HL

The engine is stopped by flicking the stop switch (2)

20 to the

"STOP"

position.

OJ.!

Quantity Control

Other points to be observed when starting the engine:

The choke lever is mechanically connected to the car-

buretor's choke valve. The choke valve choke lever is on lever is moved away from "CHOKE".

When starting a cold engine only keep the choke lever the

"CHOKE" open choke if

the engine stops and you have to repeat the starting pro-

cedure. If the choke lever is left

the combustion chamber will flood and stall the engine.

If you moved the choke lever away position after the engine fired and the engine still does not run after several attempts, it

case, remove and dry off the sparkplug. Clear the combus-

tion chamber by cranking the engine over several times on the starter with the spark plug still removed and the stop

switch move the choke lever away from engine is cold - and set the throttle trigger to the startingthrottle position.

the

"CHOKE"

position until the engine begins to fire. Then

fully-choke

"STOP"

and open when the chocke

leveraway from

already flooded.Insuch a

position. When you now try to start,

closed when the

"CHOKE"

the

"CHOKE"

.from

"CHOKE"

-even

position,

the

"CHOKE"

- evenifthe

Adjusting bolt at

The oil quantity supply can be regulated with the adjusting

is positioned at the bottom side of the crankcase.

bolt. turning the adjusting bolt in clockwise direction to plus position it

anti-clockwise to minus position

creased.

assure sufficient lubricating quantity for the cutting tool at all times the adjusting bolt should always be set at plus position

guide bars decreasing of the lubricating supply

recommended.

maximum

(+)

the lubricating quantity is increased, turning

(+)

- max'imum oil supply. Only when using short

position

(-)

the oil flowisde-

very cold weatheronly open the choke slightly after starting - move choke lever to center position. Allow engine to warm up for abrief period at half-throttle. Then movechoke lever away from throttle lock.

A new engine or one which has been run until the is dry will not start first time after fueling because the carburetor's diaphragm pump only delivers sufficient fuel after the engine has been turned over several times.

"CHOKE"

and disengage the starting-

,fuel

tank

the oil supply has to be put out of function completely for

instance when using to minus position position.

attachment tool put adjusting bolt

(-)

pressinand turn furtherto"0"

Cutting Attachment

1 Oil inlet 2 Fixing holes

,...--

holes

",-

l..,

-t

•

1 2

the

oill

inlet holes and the

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

Guide bar

The nose and underside of the guide bar are subjected particular high stress and strain.Toavoid one-sided wear,

turn the guide bar over every time you resharpen or replace the chain. Regular cleaning

guide bar groove is also very important.

On Rollomatic bars the sprocket nose bearing must be greased regularly with the grease gun supplied with the bar. Under normal conditions it should be greased once daily. Only use high grade grease for refilling the grease

e.g.Refill Tube 0781120

gun,

grease the sprocket, place the saw on its side so that the

bar nose is firmly supported. Clean the grease holes and

then pump around the bar (sprocket turns) so that the bearing is uniformly filled. When grease emerges from the grease hole on the other side of the bar or around the sprocket, repeat

the same procedure on the other side.

If the cutting attachment

conditions, be greased more often. Moreover, sprocket nose should be thoroughly greased from both sides after finishing work the bearing.

the grease while slowly pulling the chain

e.g.cuttinginsnow, the sprocket nose should

1111.

used predominantlyinwet

prevent corrosion the

ordertoforce moisture out of

The guide bar can be examined for signs of wear at the

same time. A minimum groove depth of 7 be

maintainedinorder to avoid the drive link tangs scra-

ping the bottom of the groove (the cutters and

not

would

Thisdepth should be

stressed most,i.e. area with which most cutting is done on Rollomatic bars.

The guide bar must be replaced if the minimum depth

be able to run on the guide bar rails).

measured at the spot where the bar is

the bar nose on Duromatic bars and the

22 cannot be maintained.

(0.28 in) must

lie

straps

Chain lubrication

Never operate your saw without chain lubricating oil. Check function of chain oiling system and oil level tank before starting work.

Hold chain saw with mounted cutting attachment over a light background. Take care, the Oilomatic chain must not touch the ground, the ground. Run the engine with half-throttle position. If

an increasing patch of oil can be seen, chain lubrication

is operating correctly.

""-

keep it at least 20 cm(8in) clear of

the

Checking chain lubrication

Worn chain sprocket

Breakinginthe Oilomatic chain

Every new chain has to be brokeninfor about 2to3 minutes. Ample chain lubrication is essential during this period. After breaking in, check chain tension and adjust necessary.

Correct chain tension

The chain must always be slackened off after finishing

cutting work. A chain properly tensioned when would, when the temperature drops, be subjected to such great contraction stresses that the chain would break and also damage the crankshaft and bearings.

The Oilomatic chain must, therefore, always be tensioned

(with the engine shut off) before you start cutting. Chain

tension is correct

snugly

around the bar by hand - take care, the cutting edges are

very sharp.

the underside of the bar and can still be pulled

the cold condition when the chain fits

is warm

When the chain saw is operated in extremely cold weather acorrectly cold-tensioned Oilomatic chain will begin to sag

noticeably as The chain must then be retensioned. However,

slackened off again immediately after you stop the saw. This is necessary to avoid contraction stress which would occur as the chain cools down

A new chain must be retensioned more frequently until it is fully stretched.

warmsupto normal operating temperature.

ambient temperature.

Chain sprocket

The stress and strainonthe chain sprocket are particularly

high. (about 0.5 mm/0.02 in), the sprocket should A worn sprocket reduces the service life of your saw chain. Replace the chain sprocket with every second Oilomatic chain. It is best to use two chains alternately with one sprocket.

the wear marksonthe teeth are very pronounced

must

replaced.

Replacing

machines with chain brake

The chain brake must be disengaged before the chain

sprocket cover can be removed - pull hand guard back toward handlebar.

First remove chain sprocket cover and bar and chain. Loosen and unscrew spark plug with combination wrench. Put clutch wrench through the slots of the outer cover plate between the clutch shoes. Turn crankshaft that the boring provided

line with the bar stud and then insert the tube

is 4200 through this boring onto the stud. Loosen crankshaft nut with a ring wrench SW

the

chain

sprocket

the handle of the clutch wrench

19.

such a way

1115

893

Attention! Crankshaft nut and carrier have left hand thread

-looseninclockwise direction!

Top: Loosening the hexagonal nut

Bottom: Tightening the carrier (standard clutch)

After unscrewing the nut remove outer guide washer, wrench and tube. Now screw locking screwintothecylinder

by hand until direction until the piston top rests against the locking nut, loosen and unscrew carrier with clutch wrench.

Now the inner guide washer, chain sprocket, needle cage and cover plate can be removed from the crankshaft.

Before reassembly clean needle cage

grease. Check drive pin

has a snug fit. Turn crankshaftinclockwise

bull

end of crankshaft, wash

clean gasoline and apply ball bearing

cover plate. If it is twisted insert

24 a new one; a worn out boring must be replaced.

Reassembling is1loneinreversesequencea/disassembly. W,hen

pulling'on the chain sprocket care must be taken that the drive pin engages into the boring of the chain sprocket. The beaded edge at the cover plate and at inner guide plate must point towards the crankcase, Tighten carrier with clutch wrench. Mount outer cover plate such a way that the elevated area of the inner diameter points towards the carrier.

The crankshaft nut must be tightened down securely,

Air Filter

The function of the air filtersisto keep back the dust of the

sucked parts.

Clogged air filters reduce the power of the engine, increase the fuel consumption and make starting more difficult.

The air filter must be cleaned daily - under extreme dust conditions more often!

Before removing clean the air filter and its surrounding area from dust. Close choke shutter - put choke lever to "CHOKE" buretor. left. Thereafter loosen the two slotted nuts

Now the air filter can

airinorder to reduce the wear of the driving

position - so that no dust can drop into the car-

remove the carburetor box cover turn lock to the

the air filter.

pulled from the studs.

Top:

Center: Remove carburetor box cover Bottom: Removed filter

Loosening the slotted nut

For the daly cleaning it is sufficient to clean both filter parts with a soft brush.

However, once a week the complete air filter should be

washed compressed

The reassembly is doneinreverse sequence.

is advisable to always carry a spare filter with you and to

clean the clogged one at home.

clean gasoline andifpossible cleaned with

air.

Carburetor

High

speed

adjustment

regulating

Low

Idle

screw

Regulating

the

idle

speed

regulating

screw

The carburetor has been adjusted at the factory for maxi-

mum performance and lowest fuel consumption under local average atmospheric conditions.

When working at high altitudes (mountains) or near sea level the carburetor must be readjusted. The adjustment must be made at the two adjustment screws and at idle speed regulating screw.

Forthe basic adjustment- itshould be taken as a guide for all readjustments in

carefully until they have a snug fit. Thereafter the

following adjustments have

High speed adjustment screw

Low speed adjustment screw

Never interchange the adjustment screws!

Carburetor adjustment must only be done while engine is

warm and with clean air filter.

- both adjustment screws are screwed to

be made:

open

1114

open 1of a turn

of a turn

the

Hints for readjustment of the carburetor

Engine stalls at idle speed:

With engine running turn idle speed adjusting screw slighHy to the right - clockwise - (chain must not

Chain runs when engineisidling:

Turn idle speed adjustment screw slightly to the left anti-

clockwise.

Engine speed erratic when idling:

Adjust low speed adjustment screw.

ture by turning it to the right - clockwise- and a richer mixture by turning it anti-clockwise.

Except for simple maintenance works repairs should be

by an authorized STIHL service shop.Inmany places

done you find service shops with

personell.

You

get a leaner mix-

necessary tools and trained

run).

Starter Assembly

Remove the mounting screws

Replacing a broken starter rope

First remove the three screws which retain the fan housing.

Next lift the base case and slide downward and away from the engine.

Using a screwdriver, or a suitable pair of pliers, carefully remove the spring clip from the starter post groove. rope rotor, together with the pawl can now be liftet off.

Remove any remaining rope from the rope groove rotor. Thread meter and 1000 mm (40 in) long and secure it to the rope rotor with a simple overhand knot. Seal the endsof the rope to

prevent ravelling with a match or lighter flame. Thread the other end of the rope through the rope guide holeinthe fan housing from inside, pass an

upward direction and secure it with a figure 8 or looped overhand knot (see diagram of knots). rope on the rotor at this time. Clean and lubricate the rope rotor's bushing with a non-resinous oil, slide the rotor on the starter axle or post and align the rewind spring anchor loop (exposed through the center opening in the rewind spring housing) with the notched section of the rib on the

the fan shroud away from the crank-

a new starter rope, 4,5 mm

through the starter grip

The

the

(0.18

in) dia-

not rewind the

Top: Possible special knots Bottom: Component partsofthe starter assembly

Installing the spring clip

Tensioning the rewind spring

back of the rope rotor. Rotate the rotor back and forth until the slotted area engages the starter rewind spring anchor loop.

Now insert pawlinrope rotor and press spring clip onto starter post with a suitable pair the spring clip engages on the pawl's guide pin and points itinthe clockwise direction. Then tension rewind spring.

Replacing a Remove the rope rotor as above. The spring housing

together with the rewind spring can thenberemoved from the fan housing by turning the fan housing over and let it drop out of the recess spring and spring housing are supplied asanassembly. Lubricate the spring with a few drops of non-resinous oil before installing

Drop the rewind spring/housing assembly (with the bottom plate area up) should pop out of its housing during installation re-insert it in

its housing starting from outside to inside in counter-

clockwise direction. Reassemble the rope rotor as above.

broken

rewind

it.

,into

the fan shroud recess. If the spring

pliers, making sure that

spring

the fan housing. A replacement

Tensioning

Rewind the starter ropebyturning the rotor in counterclockwise direction until the starter grip has reached a distance of about 20 loop Use this loop to turn the rope rotor clockwise by three full revolutions and hold the rope rotor in placebyhand. Pull out and straighten the twisted rope. Gradually release the rope rotor and pull wound on the rope rotor

The rewind spring is held firmly in"f)lace against the starter housingbyspring tension and does notdroop. one more turn able toberotatedbyat least one-halfanextra turn with the rope pulled all the way out. If spring tension is too great pull out the starter rope, hold the rotor firmlybyhand, and

remove one turn of the rope. A

rewind

bably

Re-install the fan shroud with the three retaining screws securely tightened.

the

rewind

the remaining rope next to the

spring

break.

spring

cm(8in) from the fan shroud. Form a

the starter rope until itisfully re-

spring force.

tensioned correctly if the starter grip

more tension is required add

the rope rotor. The rope rotor should

thatistensioned

rim

too

of the rope

heavily

will

rotor.

pro-

General Maintenance

increasethe service lifeof the tool and to assure troublefree operation few maintenance necessary:

the end of each working day clean the machine from saw dust and dirt. Also clean guide bar, saw chain and air filter.

Make sure that the cutting tool

condition.

Refill the fuel tank and store the tool

If you let your chain saw sit idle for a longer period you should additionally protect the engine against corrosion. While stopping the engine inject preservative oil through the carburetor.

regular intervals

isinproper operation

a dry place.

Oil Inspection Window

control the quantity of the chain lUbricating oil and to clean the oil hose and pick-up body window is installed sprocket cover.

the crankcase behind the chain

oil inspection

You

need not rinse the engine before starting again; just shake the fuel in the tank thorougly. If engine does not start immediately spray some gasoline over the air filter.

After the break-in period of about all screws and nuts of the tool except for the carburetor screws must be checked for tight seat and must be retightened.

The electrode gap of the spark plug is

should be checked with a feeler gauge from time to time and adjusted if necessary. are badly burned replace spark plugs.

Rinse fuel tank with clean gasoline every 50 operating

hours.

necessary also clean strainer of the pick-up body.

20-30

If electrodes of the spark plugs

operating hours

0.5 mm (0.02 in) and

Loosen oil inspection window with combi wrench and when removing take care that the gasket is not damaged. Now by means of a hook the oil inspection window with pick-up body can be removed for cleaning.

Specifications

Versions available

056 AVE; 056 AVSE: Electronic (breakerless)

magneto ignition system

2. 056 AVEO; 056 AVSEO:

as 056 AVE, 056 AVSE but with chain brake

Engine

STIHL single cylinder two stroke engine

056

Piston displacement: Cylinder bore:

Piston stroke:

cm3(4.94 cu. in)

mm (2.05 in)

38 mm

(1.5

in)

056S

Piston displacement: Cylinder bore: Piston stroke:

cm3(5.3 cu. in)

(2.13

38 mm

(1.5

in)

Ignition System 056 AVelectronic

Principle: Electronic magneto ignition

system (breakerless)

(0.1

Ignition timing: 2.6 mm

in) before top dead

center at 8000 r.p.m.

Spark plug: Bosch WSR 6

For Champion RCJ 6 Y Heat value

175

Electrode gap 0.5 mm (0.02 in)

Spark plug thread: M 14x1.25;

9.5 mm (0.37 in) length

Air filter: Fuel tank capacity: Fuel mixture:

Cutting Attachment

Guide bars:

Bar lengths:

Oilomatic chain:

Chain

sprock~t:

Chain lubrication:

Oil tank capacity:

Two part flat wire mesh filter

(1.73

0.821

pt) Mixture ratio 1:40 with STIHL engine oil; 1:25 for other branded two-stroke engine oils

Duromatic guide bars with

stellite tipping at

the bar head Rollomatic guide bars with star shaped roller nose

Duromatic40,45, 50 and 63 cm (16,18,20 and 25 in)

37,

Rollomatic 63 cm

(15,

9.32 mm

40, 45, 50 and

16,18,20

(3/

Rapid-Standard,

and 25 in)

-Micro and -Super Rapid-Standard and -Micro are

"S"

also available as

(safety)

chain

(3/8")

9.32 mm

7-tooth for

Topic-Super

pitch

Fully automatic oil pump, adjustable oil quantity control

0.36 I (0.76 pt)

Fuel System

Carburetor:

All position diaphragm carburetor with integral fuel pump

Weight of saw

with37cm (14.5 in) bar and chain: 056 AVE; 056 AVSE

9.1kg(20.06

056 AVEO; 056 AVSEO 9,5kg(20.09

Ib) Ib)

Sharpening and Maintenance

Saw Chain

Description of chains

STIHL saw chains are 3-link chains and all versions are assembled in the same basic pattern. The illustration on the right shows the component parts of a saw chain. Every chain manufactured by STIHL features the exclusive Oilomatic system. Apart from the three basic types (Rapid,

Picco and Topic), there are three different versions whose names denote the cutter shape, dard, semi-chisel

= Micro and full chisel = Super. Oilo-

matic Rapid chains are also available safety versions.

The main size measurement on a saw chain is the pitch. It

is determined by measuring the distance from the center

of one rivet to the center of the next rivet but one and dividing the measurement by two. The result is the which, in accordance with international custom, is speci-

(3/

fied in inch

= 9.32 mm).

Like any other cutting tool, the saw chain is subject to

normal wear. A properly sharpened chain will eat into the

woodand' requirevery littleefforton the partofthe operator.

For this reason alone you should never attempt to cut with a dull or damaged chain.

i.e.chipper tooth = Stan-

standard and

pitch

Top: Component parts of Oilomatic Rapid chain

Bottom: Measuring chain pitch

1 = Presettie strap 2

= Right hand salety link

= Right hand cutter

= Tie strap = Rivet

= Drive link

= Lefthand cutter

= Left hand safety link

There are a few crucial angles which must be maintained order to obtain good results when sharpening a chain. They are explained below.

Filing angle

The filing angle for Rapid-Standard and Rapid-Micro

chains is 35°; these chains are initially sharpened to this

angle before leaving the factory. However, if the chain is

used primarily for cutting hardwood or frozen timber it is

best to sharpen it to

angleof30°. On the other hand, the

filing anglefor Rapid-Super andTopic-Superis always30°.

Top:

Center:

Bottom: Table of file diameters

Filing angle 1-3

= Side plate angle =

Top

Rapid-Standard

Rapid-Micro

o 0

plate cutting angle

0 0 .

Rapid-Super~

Topic-SuperI

<90.

Rapid-Super Topic-Super

2 Rapid-

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

'O~

It is essential to insure that the filing angle is kept exactly

the same chain to run roughly and unevenly rate of wear and result ing by hand

the cutting edge.

Side plate angle

The upright cutting edge just below the top plateisknown

the side plate cutting edge. The side plate angle therefore, the angle between the side plate cutting edge and the horizontal line formed by the cutter toe and heel.

The specified side plate angles are 90

for Rapid-Micro and 800for Rapid-Super and TopicSuper chain. These angles are obtained automatically if a file holder is used with the correct file and the file is held

correctly during sharpening.

Top plate cutting angle

all cutters. Irregular angles will cause the

wellasincrease the

chain breakage. When sharpen-

always file from the inside to the outside of

for Rapid-Standard,

is,

Chain pitch Filedia. File .325"

(8.25 mm)

(9.32 (Topic)

(12.7

mm)-

mm)*

mm)

.404" (10.26

112"

-The 4.8 mm dia. round file must be used when the top plate has been filed back half-way.

4.8mm

5.5mm

4.5mm

5.5mm

6.3mm

No.

0811411 8088 08114118108 6814 242 3396 08114118108 0811

411'

8118

The top plate cutting angle is 60° on all chains. It is also

obtained automatically when the chain is sharpened carefully with a file holder or another STIHL sharpening tool.

Sharpening

Only special saw chain files may be and they must match the chain pitch. The shape and cut of machinists' files makes them unsuitable for saw chain. The special chain file should be used with afile holderor a filing tool.

All cutters must be filed to the same length. slopes downward to the rear (clearance angle) the cutter

'Used

for sharpening

the top plate

Top:

File position

Bottom: Sharpening with file holder

lor

Rapid-Standard

File position lor Rapid-Micro, Rapid-Super and Topic-Super

heights will be unevenifthe cutter lengths are different.

the cutters are not all the same height the chain will run

roughly and eventually break.

Asitis very important to achieve uniform cutter lengths it is

best to measure them with a slide caliper. Find and sharpen the shortestcutter first and then use it as amaster foraHthe

alii

others, as

the master cutter. Sharpen all the cutters on one side of the chain first and then repeat the procedure side.

cutters must be filed back to the same'length

the other

------

The file must be held level for Rapid-Standard chain

thatitisat90° to the perpendicularfaces of the chain links.

Rapid-Micro, Rapid-Super and Topic-Super chains

On the file and file holder must be guided so that the handle is 10°

lowerthan the tip of the file,i.e.in this case the file must run upward at an angle of must always be used for manual sharpening of RapidSuper and Topic-Super chains.

File evenly and steadily and note that the file

sharpens on the forward stroke. The file must be lifted

off the cutter

touch the tie straps and drive links.

edge can be removed with a piece

Rotate the file at frequent intervals becoming worn unevenly.

Important: Sharpen the chain frequently and take away

as little material as possible. Two or three strokes of the file are usually sufficient to

A STIHL electric sharpener greatly simplifies chain sharpening.

the backstroke. Make sure that you do not

10°

Ikeep

--J

to the horizontal. Afile holder

Burrsonthe cutting

of hardwood.

Order to prevent it

the chain sharp.

only

Depth gauges

The depth gauge determines the height at which the cutter

enters the wood and thus the thickness of the chip removed. The cutting capacity and life of a saw chain are therefore influenced by the distance between the depth gauge and the cutting edge,

This selling varies according to chain pitch and must be

checked with the appropriate filing gauge.

The best cUlling results are obtained with the sellings listed

the table on the right. However, the depth gauge selling may be increased by 0.2 mm for cUlling softwood weather conditions.

i.e.the depth gauge setting.

mild

Top: Table of recommended depth gauge settings

Center: Depth gauge setting Bottom: Filing down depth gauge (Rapid chain)

Chain pitch

(8.25 mm)

.325"

(9.32mm)

.404" (10.26 mm)

(12.7

mm)

'/2"

090 G chain saw

'/2"

Selling Filing gauge

0.65mm

0.6Smm

0.8mm

1.2

mm 11068934010

1110 1110 1106 11068934000

893 4000 893 4000 893 4000

As the culler is sharpened the depth gauge selling reduced. This means the height of the depth gauge must be checked and lowered if necessary. If the depth gauge projects from the filing gauge, it must be filed down level with the gauge. On Rapid chain the depth gauge should also be rounded off to its original shape.

General chain maintenance

Chain maintenance begins as soon as the chain is fitted on the bar and sprocket. The essential points are

chain tension and ample lubrication.

Attachment". Clean the chain thoroughly in gasoline after sharpening

order to remove filings or grinding dust. Then lubricate the chain by immersing it in an oil bath. If the chain has not been used for an extended period, clean it with a brush and

immerse it

an oil-paraffin bath.

Stihl 056 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual