18
PUTTING INTO OPERATION (Fig. 25)
CAUTION:
When working on the guide bar or saw chain
always wear protective gloves and pull out the
power supply plug.
CAUTION:
Switch on the electric chain saw only after having
assembled it completely and inspected!
Mounting the guide bar and saw chain
(Fig. 26)
Put the electric chain saw on a stable surface and carry
out the following operations for mounting the bar and
chain:
Release chain brake. To do this, pull the hand guard (
1
)
in the direction of the arrow.
Flip up the sprocket guard quick tightener (
2
).
(Fig. 31)
Push in the sprocket guard quick tightener firmly against
spring pressure, and slowly turn it counter-clockwise
until you feel it engage. Keep pushing in, and turn it as
far as possible counter-clockwise.
Release the sprocket guard quick tightener (remove
pressure) and now turn it clockwise to its original
position. Repeat this procedure until the sprocket guard
(
3
) is unscrewed.
Pull the sprocket guard (
3
) up slightly, pull out of the
rear fittings (
4
) and remove.
Position the guide bar (
7
) and push it against the
sprocket (
6
).
(Fig. 27)
Place the saw chain (
9
) on the sprocket (
6
). Using your
right hand, guide the saw chain into the upper guide
groove (
8
) of the guide bar.
(Fig. 28)
The cutting edges of the saw chain on the top of
the guide bar must point in the direction of the
arrow!
Using your left hand, lightly press the guide bar against
the holder on the housing and guide the saw chain (
9
)
around the nose sprocket (
10
) on the guide bar. While
doing this, pull the saw chain slightly in the direction
shown by the arrow.
(Fig. 29)
Line up the hole in the sprocket guard with the threaded
pin (
11
).
Turn the chain tensioning screw (
Fig. 32/14
) to align
the chain tensioning pin (
12
) with the hole in the guide
bar.
(Fig. 30)
First press the sprocket guard (
3
) into the mounting (
13
)
and then push it onto the threaded pin (
Fig. 30/11
).
(Fig. 31)
Tightening the saw chain (Fig. 32)
Firmly push in and simultaneously turn the sprocket
guard quick tightener (
2
, clockwise) in order to screw on
the sprocket guard (
3
), but do not tighten it yet.
Lift the tip of the guide bar slightly and turn the chain
tensioner (
14
) clockwise until the saw chain engages in
the guide groove on the lower side of the guide bar (see
the circle).
Push in the sprocket guard quick tightener (
2
) again and
tighten by turning clockwise.
Release the sprocket guard quick tightener (
2
) (remove
pressure) until it turns freely, then fold it in as shown in
the illustration.
(Fig. 33)
Checking the chain tension (Fig. 34)
The chain has the proper tension when it lies against
the bottom edge of the guide bar and can be easily
pulled by hand about 2-4 mm (about 1/8”) up from the
guide bar.
Check the chain tension frequently - new chains tend to
get longer during use!
When checking the chain tension the motor must be
switched off
and the power supply plug
pulled out.
If the chain is too loose
: Loosen the sprocket guard
quick tightener by about a quarter turn. Tighten the
chain as described under “Tighteneing the saw chain.”
HINT:
Use 2 or 3 saw chains alternately for even wear of the
chains, sprocket and guide bar running surfaces.
In order to guarantee a uniform wear of the groove
in the bar the bar should be turned over whenever
replacing the chain.
Chain brake (Fig. 35)
These models come with a chain brake as standard
equipment. If there is a kickback resulting from the
guide bar tip impacting the wood (see SAFETY
INSTRUCTIONS), the back of the hand hitting the
handguard will engage the chain brake.
The chain will stop within a fraction of a second.
Run-out brake
The electric chain saw come with a run-out brake as
standard equipment.
The run-out brake ensures that the chain comes to a
stop immediately when the ON/OFF switch is released,
thus preventing the chain from continuing to run and
presenting a hazard.
Testing of the run-out brake is described on later.
Chain and run-out brake maintenance (Fig. 36)
The brake systems are very important safety
features, and like any other part they are subject to
a certain amount of wear. Regular inspection and
maintenance is important for your personal safety,
and can be properly performed only by a MAKITA
service centre.
Engaging the chain brake (braking) (Fig. 37)
With your left hand, press the handguard (
1
) towards
the tip of the guide bar (arrow
2
).
Releasing the chain brake
Pull the hand guard (
1
) towards you (arrow
3
) until you
feel it catch. The brake is now released.
Note:
When the chain brake is actuated the power supply to
the motor will be cut off. Testing of the chain brake is
described on later.
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