Dolmar Gasoline Chain Saw PS-9010 - Manuel (Page 20)

20
- Position the sprocket guard (G/2).
Manually tighten the two fastening nuts (G/1). Tightening the chain
- Slightly lift the end of the guide bar and turn the chain
adjusting screw (H/4) to the right (clockwise) until the
chain rests against the bottom side of the guide bar.
- Continue to lift the guide bar end and firmly tighten the
two fastening nuts (G/1) by means of the universal
wrench.
Chain brake
I
Engaging the chain brake (braking)
If the kickback is strong enough the sudden acceleration of the
guide bar combined with the inertia of the hand guard (K/3) will
automatically actuate the chain brake.
When actuating the chain brake manually, press the hand
guard (K/3) with your left hand in the direction of the guide
bar end (arrow ).
Releasing the chain brake
Pull the hand guard (K/3) in the direction of the tubular handle
(arrow 2) until it will engage noticeably. Now the chain break
is released.
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 in short intervalls because new
chains tend to elongate.
- When checking the chain tension the engine must be switch-
ed off.
NOTE:
It is recommended to use 2-3 chains alternatively.
In order to guarantee a uniform wear of the guide bar the bar
should be turned over whenever replacing the chain.
The PS-900 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 10), 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 before
starting it and to stop it immediately in case of an emer-
gency.
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!
ALWAYS release the chain brake
before starting the work!
J K
2 1
3
H
4
G 2
1