Bedienungsanleitung Dolmar 109 HappyStart (Seite 15 von 28) (Englisch)

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Do not work with the chain saw without Þ rst checking

the chain brake!

- Start the engine as described (make sure you have a good

footing, and place the chain saw on the ground in such a

way that the guide bar is free of contact).

- Grasp the tubular handle Þ rmly with one hand and hold the

grip with the other.

- With the engine running at moderate speed, press the hand

guard (C/1) in the direction of the arrow with the back of

your hand until the chain brake engages. The chain should

stop immediately.

- Immediately release the throttle and release the chain

brake.

IMPORTANT: If the chain does not stop immediately

when you test the chain brake, do NOT use the chain

saw. Take the chain saw to a DOLMAR service center.

Checking the chain brake

Never work with the chain saw withoute sufÞ cient chain lubri -

ca tion. Otherwise the service life of the chain and guide bar

will be reduced. Before starting work check the oil level in the

tank and the oil feed.

Check the oil feed rate as described below:

- Start the chain saw.

- Hold the running chain saw approx. 15 cm above a trunk

or the ground (use an appropriate base).

If the lubrication is sufÞ cient, you will see a light oil trace be-

cause oil will be ß ung off the sawing device. Pay attention to the

direction the wind is blowing and avoid unnecessary exposure

to the oil spray!

Checking the chain lubrication

Adjusting the carburetor

(only for EU-countries)

Carburetor adjustment must only be done with the engine

warm, a clean air Þ lter and the saw chain properly tensioned

and mounted. Always have a DOLMAR service centre do

carburetor adjustment, since incorrect adjustment can

cause considerable damage to the engine.

Due to new emissions regulations, the adjustment range of

screws (H) and (L) has been limited. This adjustment range

limitation (to about 180 degrees) prevents over-rich settings.

This ensures compliance with emissions regulations, optimum

engine performance and economical fuel consumption.

Factory setting of adjustment screws (H) and (L):

Screwed out almost all the way (counter-clockwise).

For proper adjustment, proceed as follows:

Checking adjustment screw (H)

Before starting, make sure that adjustment screw (H) is un-

screwed all the way (until you feel a stop). Limitations do not

protect against too lean running (insufÞ cient fuel)!

1. Start engine and let it warm up (3-5 minutes)

2. Set idle

3. Check acceleration

4. Set highest permissible speed.

5. Check idle speed

2. Set idle

Set the idle speed per the technical speciÞ cations.

Turning the adjusting screw (S) in (clockwise) increases the

idle speed. Turning it out (counter-clockwise) lowers the idle

speed. The chain or blade must not move in idle!

3. Check acceleration

When the throttle is pressed, the engine should go smoothly

from idle to high speed.

Unscrew adjustment screw (L) counter-clockwise in small

steps until acceleration is good.

4. Set the top speed

Set the top speed with a minimal adjustment to screw (H)

in accordance with the technical data.

Screwing in adjustment screw (H) clockwise increases

engine speed. Never exceed the top speed under any

circumstances!

5. Checking the idle speed

After setting the maximum permissible speed, check the idle

speed (the saw chain or cutting tool must not turn in idle).

Repeat the adjustment procedure starting with step 2 above

until idle speed, acceleration, and speed are all good.

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Dolmar 109 HappyStart Seite 15

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