Oleo-Mac GST 250 5029-9001E2T - Инструкция по эксплуатации - Страница 33

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BREAKING-IN THE CHAIN
New chains will stretch and must be tightened 
frequently. Tension adjustment should only be 
made when the chain is cool. First, turn the chain 
and lubricate it with additional oil. Then start 
the saw and allow it to run at moderate speed, 
checking that the oil pump is working properly. 
Stop the engine and adjust the chain tension. 
Start the saw again and make a few cuts in a 
trunk to heat up the chain. Stop the engine, allow 
the chain to cool and adjust again. Repeat this 
process until the chain retains proper tension. Do 
not touch the ground with the chain.

  WARNING - Never touch the chain while 

the motor is running. Do not touch the 
ground with the chain.

6.  STOPPING THE ENGINE

Release the throttle lever (2, Fig. 2) and let 
the engine return to idle. Turn off the engine, 
pushing the STOP button (10).

  Do not put the chain saw on the ground 

when the chain is still moving.

7. USE

CHAIN BRAKE
The iner tial chain brake ensures maximum 
safety in using the chainsaw. It protects the 
operator from dangerous kickback which can 
occur during working phases. It is actuated, with 
consequent instant locking of the chain, when 
the operator presses the lever (manual operation) 
or automatically by inertia when the protection is 
pushed forward (Fig. 15) in the event of sudden 
kickback (inertial operation). 
The chain brake is released by pulling the lever 
towards the operator (Fig. 3).

CHECKING BRAKE OPERATION
At machine inspection prior to each job, check 
the operating condition of the brake following 
the steps below:
1.  St a r t   t h e   e n gi n e   a n d   gra s p   t h e   h a n d l e 

securely with both hands.

2.  Pulling the throttle lever to maintain the chain 

operation, push the brake lever down toward 
the front using the back of your left hand 
(Fig. 11).

3.  When the brake operates and the chain is 

stopped, release the throttle lever.

4.  Release the brake (Fig. 3).

B R A K E   M A I N T E N A N C E :   a l ways   k e e p   t h e 
chain brake mechanism clean and lubricate 
the leverage. Check wear on the brake belt. Its 
minimum thickness must be 0.30 mm.

WORKING WITH TREE SERVICE CHAIN-SAWS 
FROM A ROPE AND HARNESS
This chapter sets out working practices to reduce 
the risk of injury from tree service chainsaws 
when working at height from a rope and harness. 
While it may form the basis of guidance and 
training literature, it should not be regarded as a 
substitute for formal training.

General requirements working at height
Operators of tree service chainsaws working at 
height from a rope and harness should never 
work alone.  A competent ground worker trained 
in appropriate emergency procedures should 
assist them.
Operators of tree service chainsaws for this work 
should be trained in general safe climbing and 
work positioning techniques and shall properly 
e q u i p p e d   w i t h   h a r n e s s e s ,   r o p e s ,   s t r o p s , 
karabiners and other equipment for maintaining 
secure and safe working positions for both 
themselves and the saw.