Makita DCS3410 Instruction Manual page 12

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Checking the chain tension
The tension of the chain is correct if the chain rests against
the bottom side of the guide bar and can still be easily turned
by hand.
While doing so the chain brake must be released.
Check the chain tension frequently - new chains tend to get
longer during use!
When checking the chain tension the engine must be switched
off.
NOTE:
It is recommended to use 2‑3 chains alternatively.
In order to guarantee uniform wear of the guide bar the bar
should be turned over whenever replacing the chain.
Chain brake
The DCS340 comes with an inertia chain brake as standard
equipment. If kickback occurs due to contact of the guide‑bar
tip with wood (see SAFETY PRECAUTIONS, page 6), the
chain brake will stop the chain through inertia if the kickback
is sufficiently strong.
The chain will stop within a fraction of a second.
The chain brake is installed to block the saw chain be-
fore starting it and to stop it immediately in case of an
emergency.
IMPORTANT: NEVER run the saw with the chain brake acti-
vated (except for testing, see "Testing chain brake")! Doing so
can very quickly cause extensive engine damage!
NOTE:
The chain brake is a very important safety device and like
SERVICE
any other component subject to normal wear and tear.
Regular inspection and maintenance are important for
your own safety and must be done by a MAKITA service
centre.
Engaging the chain brake
If the kickback is strong enough the sudden acceleration of the
guide bar combined with the inertia of the hand guard (1) will
1
automatically actuate the chain brake.
To engage the chain brake manually, simply push the hand
guard (1) forward (towards the tip of the saw) with your left
hand (arrow 1).
Releasing the chain brake
Pull the hand guard (1) towards you (arrow ) until you feel it
catch. The brake is now released.
ALWAYS release the chain brake before
starting the work!
(braking)