MTD ECS 20, Руководство пользователя, Страница: 19 / 48

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7. BAR AND CHAIN ASSEMBLY
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FIG. 1 - 2 - 3 - 4 - 5 - 6
#
Check that the chain brake (10) has not
been engaged, and the brake lever is in
position '1'.
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Unscrew the bar locking hand wheel (12)
and also remove the chain guard (11).
#
Fit the bar (5) onto the locking pin
(13). Turn the adjustment flange in the
direction shown by the arrow of fig. 4, then
push the bar back all the way toward the pinion
(14).
#
Slide the chain (6) through the bar slot,
starting from the top section, making sure that
the teeth cutting edge is facing forward, on the
blade top side.
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Fit the chain around the pinion (14).
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Fit the chain guard and partly tighten the
bar locking hand wheel (12) by hand, as
shown in fig. 4.
#
Tension the chain by using the chain tension
adjustment hand wheel (12), fig. 5.
The tension is correct when the chain remains
inside the slot around the bar and can be
turned with the fingers. At this stage, fully
tighten the bar locking hand wheel, as shown
in fig. 6.
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Too much tension on the chain will reduce
the life of the chain, the bar and the engine.
#
Too little tension of the chain may cause the
chain to fall from the bar, and create a
dangerous condition for the user.
8. LUBRIFICATION SYSTEM
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An automatic pump allows the chain
lubrication.
#
Use only new oil for chains. The choice of
the oil viscosity depends on the air tempera-
ture. Never use waste oil or second rate oil
that could damage the pump, the bar and the
chain.
#
Contact an authorised service centre in
order to choose good oil.
#
Never use the chainsaw without oil. Check
oil level regularly, refill if less than ¼ full.
#
If the lubrication system doesn't work
properly, check that the oil filter is clean,
eventually contact an authorised service
centre.
9. SAFETY CHAINBRAKE
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FIG. 2-7
#
This area shows the part of chainsaw most
likely to cause kickback (fig. 7).
#
In the event of kickback, the left hand will
come into contact With chain brake lever, that
incorporates a separate electrical switch to cut
out the current to the motor, stopping the chain
immediately ('O' position).
#
To reset after operation of the chain brake,
disconnect from power supply and release the
brake by pulling the brake lever into the
rearward position ('1' position).
#
Check chain tension before restarting.
10.SWITCHING ON/OFF
- SWITCH ON -
Hold the front handle with the left hand and
the rear handle with the right hand.
Press the lock off safety button (2) with the
thumb and press the start button (3).
- SWITCH OFF -
To stop the chainsaw, release the trigger.
ELECTRIC MOTOR SAFETY SYSTEM
This chainsaw has a device that protects the
motor by disconnecting it when the effort is
too high. To restart, release the trigger.
Check that the chain is able to rotate.
Push the trigger and the lock-off button to start
again.