Use and Care Manual
2
CS-490
  1. Fatigue causes carelessness. Be more 
cautious before rest periods and before 
the end of your shift. 
  2. Personal protective clothing required by 
your safety organizations, government 
regulations, or your employer should be 
used; otherwise, sung fitting clothing, 
protective eyewear, safety footwear and 
hand, leg and hearing protection should 
be worn. 
Note: Personal protective clothing 
should meet the requirements of 
applicable Standards. 
  3. Before fueling, servicing or transporting 
your chain saw switch off the engine. To 
help prevent fire, restart your chain saw 
at least 3 m from the fueling area. 
  4. When using a chain saw a fire 
extinguisher should be available. 
  5. When felling, keep at least 2 tree lengths 
between yourself and your fellow 
workers. 
  6. Plan your work; assure yourself of an 
obstacle-free work area and, in the case 
of felling, of an escape path from the 
falling tree. 
  7. Follow instructions in your operator’s 
manual for starting the chain saw and 
control the chain saw with a firm grip 
on both handles when it is in operation. 
Keep handles dry, clean and free of oil. 
A chain saw should never be carried 
with the engine running. When carrying 
a chain saw with the engine running, 
push the front hand guard forward to 
engage the chain brake. 
  8. When transporting your chain saw, use 
the appropriate transportation covers 
that should be available for the guide bar 
and saw chain. 
  9. Never operate a chain saw that is 
damaged, improperly adjusted, or is not 
completely and securely assembled. Be 
sure that the saw chain stops 
moving when the throttle control trigger 
is released. Never adjust the guide bar 
or saw chain when the engine operating. 
 10. Beware of carbon monoxide poisoning. 
Operate the chain saw in well-ventilated 
areas only. 
 11. Do not attempt a pruning or liming 
operation in a standing tree unless 
specifically trained to do so. 
 12. Guard against kickback. Kickback is the 
upward motion of the guide bar, which 
occurs when the saw chain, at the nose 
of the guide bar, contact an object. 
Kickback can lead to dangerous loss of 
the chain saw. 
TO AVOID KICKBACK: 
(a) Contact of the guide bar tip with any 
object should be avoided. 
(b) Tip contact may cause the guide bar 
to move suddenly upward and 
backward which may cause serious 
injury. 
(c) Always use two hands when 
operating the chain saw. 
(d) Use a firm grip, thumbs and fingers 
encircling the handles. 
(e) Don’t overreach. 
(f)  Avoid cutting above shoulder height. 
(g) Follow the manufacture’s instructions 
for sharpening and maintenance of 
the saw chain.
 13. When boring with the chain saw, the 
initial cut should be introduced with the 
lower part of the nose (tip) until the hole 
is sufficiently large so as to introduce the 
entire nose (tip) of the guide bar. This 
technique should reduce the danger of 
kickback.
 14. A chain saw is intended for two-handed 
use. Serious injury to the operator, 
helpers and/or bystanders may result 
from one-handed operation. 
CAUTION 
 A. Allow your chain saw to cool before 
refueling, and do not smoke while 
refueling. 
 B. Do not allow other persons or animals 
close to running chain saw or close to 
where a tree is being felled. 
 C. Use extreme caution when cutting small 
size brush and saplings because slender 
material may catch the saw chain and 
be whipped toward you. 
 D. When cutting a limb that is under tension 
is alert for spring-back. 
Copyright
©
2017
All Rights Reserved.
RULES FOR SAFE OPERATION










