Dolmar PS-420 - Manual (Page 31)

7
8
Working in winter
In order to prevent carburetor icing in conditions of low tempe-
rature combined with high humidity, and below + 40°F (+ 5°C)
in order to get up to operating temperature faster, heated air
can be taken from the cylinder.
Remove the cover (see “Cleaning the air filter”).
Remove the insert (7) and insert it as shown for winter opera-
tion.
If the temperature is above + 40°F (+ 5°C) the engine needs
to induct cold air. If this is not done, the cylinder and piston
can be damaged!
For temperatures above + 40°F (+ 5°C) turn the insert 180° so
that after it is inserted the induction opening (8) is closed.
Put the cover back on.
6
Symbol visible - Normal operation
Symbol visible - Winter operation
STOP
Checking the chain brake
The chain brake must be checked before every use of the
saw!
Start the engine as described above (have a secure footing,
place the chain saw on the ground so that the chain and guide
bar are not near anything).
Hold the front handle firmly, with your other hand on the rear
grip.
Let the engine run at medium speed and push the handguard
(6) in the direction of the arrow using the back of your hand,
until the chain brake engages. The chain should now stop im-
mediately.
Bring the engine back to idle and release the chain brake.
Caution: If the chain does not stop immediately in this test,
turn off the engine immediately. Do NOT use the chain saw
in this condition! Contact a DOLMAR service center.