Stopping The Engine - Oregon PCS 3840 Manuel D'utilisation

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2. Holding the chain saw horizontally, release

your hand from the front handle, hit the tip of

the guide bar to a stump or a piece of wood,

and confirm brake operation. Operating level

varies by bar size.

In case the brake is not effective, ask our dealer

for inspection and repairs.

If the engine keeps rotating at high speed with

the brake engaged, the clutch will overheat

causing trouble.

When the brake engages during operation,

immediately release the throttle lever to stop the

engine.

• CARBURETOR ANTI-FREEZE MECHANISM

Operating chain saws in temperatures of 0 – 5°C

at times of high humidity may result in ice form-

ing within the carburetor, and this in turn may

cause the output power of the engine to be

reduced or for the engine to fail to operate

smoothly.

This product has accordingly been designed

with a ventilation hatch on the right side of the

surface of the cylinder cover to allow warm air to

be supplied to the engine and to thereby prevent

icing from occurring.

Under normal circumstances the product should

be used in the normal operating mode, i.e., in the

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(1) Cylinder cover

(2) "Sunshine" mark

(3) "Snow" mark

(a) Normal operating mode

(b) Anti-freeze mode

mode which it is set at the time of shipment.

However when the possibility exists that icing

may occur, the unit should be set to operate in

the anti-freeze mode before use

NOTE

Continuing to use the prod-

uct in the anti-freeze mode even when tempera-

tures have risen and returned to normal, may

result in the engine failing to start properly or in

the engine failing to operate at its normal speed,

and for this reason you should always be sure to

return the unit to the normal operating mode if

there is no danger of icing occurring.

HOW TO SWITCH BETWEEN OPERATING

MODES

1. Flip the engine switch to turn off the engine.

2. Remove the cover to the air filter, remove the

air filter, and then remove the choke knob from

the cylinder cover.

3. Loosen the screws holding the cylinder cover

in place (i.e., the three screws on the inside

and the one screw on the outside of the

cover), and then remove the cylinder cover.

4. Press with your finger down on the icing cap

located on the right-hand side of the cylinder

cover to remove the icing cap.

5. Adjust the icing cap so that the "snow" mark

faces upwards and then return it to its original

position in the cylinder cover.

6. Fix the cylinder cover back into its original

position, and then fix all other parts back into

their proper positions.