Festool SSU 200 EB Original Operating Manual page 29

the oil cap! Sawdust and chips that could get into
the reservoir may block the oil channels, which
can lead to a serious breakdown in chain lubri-
cation! Due to their composition, biodegradable
oils for chain lubrication have reduced lubricating
ability, and a prolonged break in the operation of
the machine might make the inner lubrication
channels sticky. Therefore follow manufacturer
recommendations!
11.4 Maintaining the guide bar
The one-sided wear of the guide bar can be prevent-
ed by turning it after each time the chain is sharp-
ened. Worn-out outer guide surfaces (Fig. [9b])
are considered a normal operational wear. Use a
fi ne, fl at fi le to remove burred edges. The inner
guide surfaces (Fig. [9a]) become worn due to in-
suffi cient lubrication, incorrect chain lubrication,
or improper working procedure. The guide bar
must be replaced!
Under no circumstances can the chain links touch
the bottom of the guide bar channel. If the chain
touches the bottom of the channel, the guide bar
is so worn that it must be replaced. The lubrica-
tion ports and the guide bar channel (groove) must
be clean at all times.
11.5 Maintaining the chain sprocket
Most diffi culties with the chain are caused by in-
correct chain tightening or late replacement of the
chain sprocket. A worn chain sprocket can very
quickly damage the good portion of an expensive
cutting tool assembly. Don't be stingy about re-
placing the chain sprocket! It is recommended
that you replace the chain sprocket upon the sec-
ond replacement of the chain or earlier.
11.6 Replacing the chain and guide bar
 Put the machine in the basic position and dis-
mantle the chain sprocket cover [2-1] by rotat-
ing the fastening wheel [2-2] counter clock-
wise, as shown in Fig. [2].
 Stretch the chain [2-3] over the chain sprocket
[2-8] and remove it together with the guide
bar [2-4].
 Put a new chain [2-3] on a (new) guide bar [2-
4] and insert it into the machine. Maintain the
proper position of the cutting teeth, accord-
ing to the direction of rotation. The direction of
rotation is indicated by an arrow on the body
of the machine, and under the chain sprocket
cover there is a symbol showing how the chain
should be mounted.
 Place the chain's guide links into the chain
sprocket teeth [2-8] and turn using the chain
adjustment wheel [2-9] (when rotated clock-
wise as seen from above, the pin moves up-
wards and releases; when rotated counter
clockwise as seen from above, the pin moves
downward) so that the opening on the guide bar
[2-5] snaps onto the tension bolt [2-6].
 Then put the chain sprocket cover [2-1] on the
clamping bolt [2-7] and tighten by rotating the
fastening wheel [2-2] clockwise. Make sure the
chain is tensioned correctly before tightening.
Check the chain for correct tension!
11.7 Replacing the chain sprocket
Remove the chain and the guide bar as described
above. Using a screwdriver, strip the snap safety
ring [8-1] from the spindle [8-4], and remove the
washer [8-2] and chain sprocket [8-3]. After re-
placement, put the washer and safety ring back
on.
11.8 Lubrication and cleaning
We recommend cleaning the machine regularly.
Remove dust, cuttings, resin and other impuri-
ties. Detergents that contain solvents can harm
the painted surfaces or plastic parts. If you use
such detergents, we recommend that you fi rst
test their effect on a small hidden surface. Dur-
ing maintenance or replacement of any part of
the tool cutting set, clean the inside of the cover
by removing the accumulated dust and cuttings,
clean the guide groove, as well as the lubrication
and tension ports of the chain's guide bar. Do not
clean the rotary suction adaptor with your fi ngers!
The motor cover's ventilation ports must not be
blocked!
11.9 Replacing the carbon brushes
WARNING
The saw must undergo safety inspection to
maintain its protection category, and this work
must be done at an authorised facility licensed
to perform such work. Before servicing the tool,
always unplug the cord from the socket!
Have an authorised service facility handle re-
placement of the brushes, power cord, etc. If the
machine is dropped, it must be checked by an
authorised service centre to prevent any electrical
or mechanical hazard.
After approximately 200 operating hours, the
brushes must be checked. The brushes are ac-
cessible after removal of the hood. The brushes
must be replaced with new ones if they become
shorter than 5 mm.
The machine is equipped with self-detaching
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