Jonsered CS 2121 EL Manual De Usuario

13

See «Technical Specifi cations» for the details which apply to 

your chain. It is very diffi cult to fi le a chain saw correctly with-

out the proper aids. We recommend the use of a fi le guide to 

ensure maximum cutting effi ciency with the least tendency to 

kickback.

To fi le cutters correctly, a ROUND FILE 

and a FILE GUIDE are required. Look 

under «Technical Specifi cations»  for 

the correct fi le diameter and fi le guide 

for your saw and chain.

• 

 

File only with the chain 

 properly  

tensioned. A loose 

chain  

wiggles, making it 

 diffi cult to fi le.

•   Always fi le from the inside of each 

 cutter towards the outside. Lift 

the fi le on the return stroke.

•  File the cutters on one side fi rst. 

Then turn the saw around and fi le 

the  cutters on the other side.

•   Make certain that all cutters are of 

equal length. When the horizontal 

length is down to 3 mm (1/8”), the 

chain is worn out and must be dis-

carded.

•   Never cut wood using a dull chain. Having to press hard is a 

sure sign of a dull chain, as are very small chips. A very dull 

chain will produce sawdust rather than chips.

•   A sharp chain will produce large chips, and the saw will 

feed itself through the wood.

•   The part of the chain that saws is 

called the CUTTING LINK, which 

consists of a CUTTER (A) and 

DEPTH GAUGE (B). The  difference 

in height  between them determines 

the depth of the cut.

• When 

fi ling a saw, pay close attention to:

TOP-PLATE ANGLE

CUTTING ANGLE

HORIZONTAL FILE ANGLE

FILE DIAMETER

FILE DEPTH

All the principles which apply to crosscutting also apply when cutting thick branches.

Cut complicated branches in several stages.

Ensure that your footing is secure at all times, whether moving about or

standing in one place. Always work with the log to your right. For best control,

hold the chain saw as close to your body as possible.