Chain Catcher; Bar And Chain Assembly - Husqvarna ES020 Manual De Instrucciones

outside the range of action of the front hand guard
(fig.3).
N.B.: When the chain brake is activated, a safety
switch cuts off all current to the motor.

CHAIN CATCHER

This machine is equipped with a chain catcher (fig.4)
located under the pinion.
designed to arrest the backward chain movement in

BAR AND CHAIN ASSEMBLY

Assembly methods change according to the type of your machine- so please take care to refer to the illustrations
and machine type marked on the label (A- Legend – 9 [ES020 / ES021] ), Take great care when assembling to
ensure this is performed correctly.
FOR ES020
1.
Control that the chain brake is not activated. If so, deactivate it.
2a.
Unscrew the bar retaining nut and remove
the chain cover.
3.
Assemble the bar on the bar retaining screw pushing it as far backward toward the pinion as possible.
Set the chain on the pinion, making it slide into the bar guide groove, beginning with the upper part.
Attention! Check that the sharp side of the cutting teeth face in a frontward direction on the upper part of
the bar.
4a.
Set the chain tensioner pin in the chain
tensioner pin housing. Mount the chain cover
making sure that the drive teeth of the chain are
engaged in the pinion and in the guide groove.
5a.
Close the bar retaining nut, screwing by
hand.
6a.
To spread the chain screw the chain
tensioner screws in a clockwise direction, to
loosen tension, screw in an anti-clockwise
direction (when performing this operation
maintain the bar nose raised upwards)
7
Spread the chain until the tension is correct; that is, when the chain is pulled upwards, the drive tooth
rise to the same level as the bar. (the chain must never droop on the underside of the bar)
8a.
Tighten the bar retaining nut using an
appropriate tool.
Tensioning the chain too tightly will overload the motor and cause damage, insufficient tension can provoke
chain derailing, whereas a chain tightened correctly provides the best cutting characteristics and prolonged work
life. Check the tension regularly because the chain length tends to stretch with use (especially when the chain is
ENGLISH - 6
This mechanism is
D. ASSEMBLY / DISASSEMBLY
the case of chain breaking or derailing. These
situations can be avoided by ensuring correct chain
tension (Refer to chapter "D. Assembly/disassembly").
REAR HAND GUARD
This acts to protect(fig.5) the hand in the case of
chain breaking or derailing.
2,3,6,7,8,9,12
FOR ES021
2b.
Unscrew the bar retaining knob and remove the
chain cover.
4b.
Assemble the chain tensioner plate as shown in
figure, setting the chain tensioner pin in the chain
tensioner pin housing.
Make sure that the drive teeth of the chain are
engaged in the pinion and in the guide groove.
Mount the chain cover making sure that it couples
correctly with the chain tensioner plate.
5b.
Screw the bar retaining knob loosely tightened.
6b.
Thighten the chain turning turning the chain
tensioner ring clockwise (when performing this
operation maintain the bar nose raised upwards); to
losen chain tension, turn it counterclockwise. (when
performing this operation maintain the bar nose raised
upwards)
8b.
Tighten the bar retaining knob strongly.