GRAPHITE 58G952 - Инструкция по эксплуатации - Страница 18

18

is sharpened. Clean the guide bar groove and oil holes on that 
occasion. Guide bar groove is rectangular. Check the groove 
against wear. Put rule to guiding strip and outer sur face of a 
chain tooth. 

I

f you obser ve distance between, the groove is 

correct. Other wise the guide bar is worn out and needs to be 
replaced.

C H A I N  W H E E L

Driving chain wheel is subject to especially heavy wear. Replace 
the chain wheel when you obser ve clear signs of wear of wheel 
teeth. Worn chain wheel additionally reduces durability of chain. 
Chain wheel should be replaced by authorised ser vice workshop.

A D J U S T M E N T  O F  C A R B U R E T TO R 

Chain saw carburettor is factor y set, however it may require 
precise adjustment when operating conditions change. Before 
star ting to adjust the carburettor ensure new air filter and fuel 
filter are installed and tank is filled with appropriate fuel blend.

A

djust the carburettor with guide bar and chain installed.

•

Screw in both adjustment screws (L and H) (

16

) until stop (do 

not over tighten) (

fig. G

). 

•

First, unscrew two adjustment screws (

16

) as specified below :

-

L screw : by 1 1/4 of a turn 

-

H screw : by 1 3/8 of a turn

•

Star t up the engine and allow it to heat up while holding 
throttle lever (

11

) pressed in half.

•

A

fter the engine has been heated, release pressure on the 

throttle lever (

11

) and allow the engine to run slowly.

•

Turn the screw (

L

) slowly clockwise until idle run achieves its 

maximum speed, then turn the screw counter-clockwise by 
1/4 of a turn.

•

Turn low speed adjustment screw (

T

) (

17

) counter-clockwise 

until the chain stops moving. When slow speed appears to be 
too low, turn the screw clockwise (

fig. G

).

Avoid touching the muffler. Hot muffler may cause severe 
burns.

C H A I N  B R A K E

The saw features automatic brake, which stops the chain in 
case of recoil during chain saw operation. The brake engages 
automatically when force of iner tia is applied to a weight located 
inside the brake casing. The chain brake can also be switched on 
manually, when the brake lever (

6

) is moved towards the guide 

bar (

20

). Switching the chain brake stops the chain movement 

in 0.12 sec. 

B R A K I N G  C H E C K

Ensure the brake operates correctly before each use of the saw.

•

Put operating saw on the ground and open the throttle fully 
for 1 – 2 seconds to allow the saw engine to operate at its 
maximum speed.

•

Push the brake lever (

6

) for ward. The chain should stop 

immediately. 

•

I

n case the chain stops slowly or does not stop at all, replace 

the brake band and clutch drum before using the chain saw 
again.

•

To release the brake, pull the brake lever (

6

) towards the 

main handle (

12

) so you can hear sound typical of blockade 

snapping. 

Ensure the chain brake operates correctly and the chain is 
sharp. It is ver y impor tant for keeping potential recoil at a safe 
level.

C H E C K I N G  B R A K E  E N G AG E M E N T

During this check the saw engine should be switched off.

•

Lift the saw while holding the front handle (

5

) and main 

handle (

12

) approximately 35 cm above wooden object.

•

Let the front handle (

5

) go and allow the guide bar to tilt under 

its own weight and touch the wooden object (

fig. H

). 

•

A

t the contact with the wooden object, the chain brake should 

engage (brake lever (

6

) moves for ward to the O

N

 position). 

Ensure the chain brake operates correctly before star ting any 
task. In case the brake does not operate efficiently, adjust it or 
repair in authorized ser vice site.

In case the engine operates at high speed with the chain brake 
switched on, the saw clutch will overheat. When the chain 
brake engages during operation of the engine, release the 
throttle lever immediately and keep engine speed at low level.

C H A I N  T E N S I O N  A D J U S T M E N T

Cutting chain tends to lengthen during operation due to higher 
temperature. Longer chain loosens and may slip off the guide 
bar.

•

Loosen the guide bar fixing nuts (

7

). 

•

Ensure the chain (

21

) remains in the guiding groove of the 

guide bar (

20

).

•

Use a screwdriver to turn the chain tension adjustment screw 
(

8

) clockwise, until the chain is strained appropriately (it 

should slightly hold the guide bar in horizontal position). 

•

Check the chain tension again (it should be possible to lift the 
chain by approximately 3 – 4 mm in the middle of the guide 
bar) (

fig. I

).

•

Tighten firmly the guide bar fixing nuts (

7

). 

Do not over-tension the chain. Adjustment of overly heated 
chain may lead to excessive tension when cooling down.

O P E R AT I N G T H E  C H A I N  S AW

•

Before star ting any planned task, familiarize yourself with 
section describing safe rules for chain saw operation. 

I

t is 

recommended to gain experience by cutting waste wood 
pieces. 

I

t will also allow to find out the chain saw possibilities. 

•

A

lways obser ve safety regulations. 

•

Use the chain saw only for cutting wood. Cutting other 
materials is forbidden.

•

I

ntensity of vibrations and recoil change depending on the 

type of wood being cut. 

•

Do not use the chain saw as a lever to lift, move or split 
objects. When the chain is pinched in wood, switch off the 
engine and drive wooden or plastic wedge into the processed 
piece to release the chain saw (

fig. J

). Star t the tool again and 

commence cutting carefully.

•

Do not fix the saw to a stationar y work station. 

•

A

ttaching other devices, which are not allowed by the chain 

saw manufacturer, to the chain saw drive is forbidden.

•

I

t is not necessar y to apply big force to the chain saw when 

using the tool. 

A

pply light pressure only while the engine 

operates with the throttle fully opened.

When the chain saw is pinched in ker f during cutting, do not 

remove it forcefully. It may cause loss of control over the chain 
saw, operator injur y and/or damage to the chain saw. 

Release the chain brake before star ting to work.

•

Press the throttle lever lock (

1

) and throttle lever (

11

) (wait 

until engine reaches its full speed before star ting to cut).

•

Keep maximum speed for the whole time.

•

A

llow the chain to cut wood. Press down the saw lightly (

fig. 

K

).

•

Stop pressing the saw at the end of the cut to avoid loosing 
control over the tool.

•

When the cutting has been finished release the throttle lever 
(

11

) and allow the engine to run idle. 

•

Switch off the engine before putting the chain saw away.

Keeping high speed of the engine when not cutting wood 
causes unnecessar y losses and wear of par ts.

P R OT E C T I O N  AG A I N S T  R E CO I L

Recoil is movement of the guide bar of the chain saw up and/or 
back, which happens when the par t of the chain on the guide 
bar tip encounters an obstacle.