Warm Start; Stopping The Engine; Checking The Chain Brake - Dolmar PS-410 Instruction Manual

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A
Starting the engine
To make it easier to start, the chain saw PS‑4 are equipped
with a semi‑automatic starting valve (C/5). Pushing this valve
in reduces the amount of compression effort needed, so that it
is easier to bring the engine up to starting speed when pulling
the starter cable. The high pressure increase in the combustion
chamber that results from the first ignitions will automatically
close the starting valve (button pops back out).
Models PS-410 do not have a starting valve. Starting and
carburetor adjustment are as for model PS-411 except
without the instruction "Push the starting valve".
B
‑ Move at least 3 m away from the place where you fuelled
the saw.
‑ Make sure you have a good footing, and place the saw on the
ground in such a way that the chain is not touching anything.
‑ Engage the chain brake (lock).
‑ Hold the tubular handle tightly with one hand and press
the chain saw to the ground.
‑ Steady the rear handle by standing in the hand guard.
Cold start:
‑ Put the short‑circuit ignition switch in the "I" position (C/1).
‑ Press the choke up (C/2).
‑ Press and hold down the half‑throttle lock button (C/3).
‑ Press the throttle (C/4) slightly. The half‑throttle lock (C/3)
will arrest it.
‑ Release the grip. The throttle is now locked in half‑throttle
position.
‑ Push the starting valve (C/5) (only PS‑4).
‑ Slowly pull out the starter cable until you notice resistance
(the piston is positioned before the top dead centre).
Now pull the starter cable with a fast and forceful move-
‑
ment until you hear the first ignition.
CAUTION: Do not pull out the starter cable more than
approx. 50 cm, and lead it back by hand.
When you hear the first ignition, push the choke (C/2)
‑
down. Push the starting valve again (only PS‑4) and pull
the starter cable. As soon as the engine is running, press the
throttle (C/4) to release the half‑throttle lock (C/3), allowing
the engine to idle.
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3
PS-411
To change the feed quantity use the universal wrench and adjust
the adjusting screw (page 13, H/1) in the following way:
‑ Turn to the right to reduce the feed rate.
‑ Turn to the left to increase the feed rate.
To ensure troublefree operation of the oil pump the oil guide
groove at the crank case (A/3) and the oil inlet bore in the
guide bar (A/4) must be cleaned regularly.
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1
C
4
CAUTION: As soon as the engine is started it must be put
in idle to prevent the chain brake from being damaged.
‑ Now release the chain brake.

Warm start:

‑ As described above for cold starting, but without using the
choke (C/2).

Stopping the engine

Put the short‑circuiting switch (C/1) in position "O"
‑
(STOP).

Checking the chain brake

D
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 (D/6) 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.
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