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Checking the chain brake
C
Do not work with the chain saw without first 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 firmly 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 for repair.
Adjusting the carburetor
CAUTION:
Carburetor adjustment must only be done with the engine
warm, a clean air filter and the saw chain properly tensioned
and mounted. Always have a DOLMAR service center 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 set-
tings. This ensures compliance with emissions regulations,
optimum engine performance and economical fuel consump-
tion.
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 (insufficient 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 specifications.
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!
24
1
H
+
-
S
Checking the chain lubrication
D
Never work with the chain saw withoute sufficient chain lubri-
cation. 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. 6" (15 cm) above a
trunk or the ground (use an appropriate base).
If the lubrication is sufficient, you will see a light oil trace
because oil will be flung off the sawing device. Pay attention to
the direction the wind is blowing and avoid unnecessary
exposure to the oil spray!
E
3. Check acceleration
When the throttle is pressed, the engine should go smooth-
ly 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.
+
-
L
-
+
H
+
-
S
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