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Stop – Dolmar PS-420 User Manual

Page 31

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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.