Care And Maintenance - Metabo BAS 261 Precision Originalbetriebsanleitung

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– a suitable guide for firm support when
cutting thin stock laid on edge.
 Before starting work, check to see that the
following are in proper working order:
– saw belt;
– upper and lower belt guard.
 Replace damaged parts immediately.
 Assume correct work position (the saw
blade's teeth must point towards the
operator).
 Never cut several work pieces at the same
time – and also no bundles containing
several individual pieces. Risk of personal
injury if individual pieces are caught by the
saw blade uncontrolled.
Entanglement hazard!
 Do not wear loose clothing, jewellery, or
gloves, which may get caught and wound
up by revolving machine parts.
 Contain long hair with a hairnet.
 Never cut stock to which ropes, cords,
strings, cables or wires are attached or
which contain such materials.
9.1 Set height of the belt guide
The height of the upper belt guide (24) must be
set:
– before each sawing procedure, to adjust to the
height of the work piece (the upper belt guide
(24) must be approx. 3 mm above the
workpiece during cutting);
– after adjustments of saw belt or saw table (e.g.
saw belt change, tensioning of the saw belt,
saw table alignment).
Danger!
Before adjusting the upper belt guide and saw
table tilt:
– switch machine OFF;
– wait until the saw belt has come to a
complete stop.
1. Release lock nut (23).
2. Turn setting knob (22) so that the upper belt
guide (24) is approx. 3 mm above the
workpiece
3. Retighten lock nut (23).
9.2 Sawing
1. If necessary, adjust the table tilt.
Risk of kickback (work piece is caught
by the saw belt and thrown against the
operator)! Do not jam any work pieces.
2. If necessary, use the ripping fence (17) or the
fence mitre (20).
14
Risk from tilting of work piece!
When cutting with the ripping fence and
inclined workpiece, the ripping fence has to
be mounted at the side of the workpiece
inclined downwards.
3. Tighten upper belt guide 3 mm above the work
piece. (For details see chapter 9.1).
Note:
Always make a trial cut in a piece of scrap to verify
settings; correct if necessary before cutting the
work piece.
4. Place work piece on the saw table.
5. Start saw.
6. Cut work piece in a single pass.
7. Switch off if no further cutting is to be done
immediately afterwards.

10. Care and Maintenance

Danger!
Prior to all servicing:
1. switch machine OFF;
2. Wait until the saw has come to a complete
stop.
3. Unplug power cable;
– Check to see that all safety devices are
operational again after each service.
– Replace defective parts, especially of safety
devices, only with genuine replacement parts.
Parts not tested and approved by the
manufacturer can cause unforeseen damage.
– Repair and maintenance work other than
described in this section should only be
carried out by qualified specialists.
10.1 Change saw belt
Danger!
Risk of injury, even with the saw belt at
standstill. Wear gloves when changing belts.
Use only suitable saw belts (see "Technical
Specifications").
1. Remove rip fence (17)
2. Loosen the four wing screws on the fence
guide extrusion (16) and remove the fence
guide extrusion.
3. Open both housing doors.
4. Fold saw belt guard (7) forwards.
5. Position upper belt guide (24) at the very
bottom.
6. Turn the setting knob (19) anti-clockwise until
the saw belt is loose.
7. Remove dust guard strip (25) by lifting and
place to one side.
8. To remove the saw belt, guide it through
– the gap in the saw table (10),
– the belt guard at the upper belt guide (24),
– the side belt shaft and
– the belt guides
.
9. Fit a fresh saw belt. Check the correct
position: Teeth point towards the front (door
side) of the saw.
10.Centre saw belt on the rubber tyres of the
band saw wheels.
11.Turn the setting knob (19)clockwise until the
saw belt does not slip off any more.
12.Replace dust guard strip (25).
13.Fold lower belt guard (7) backwards (close).
Danger!
Close housing doors only when the lower belt
guard is in its closed position.
14.Close both housing doors.
15.Then:
– Tighten saw belt (see chapter 8.2);
– Align saw belt (see chapter 10.2);
– Set belt guides (see chapter 10.3 and 10.4);
– let saw test run for at least one minute;
– switch off the saw, pull the mains switch and
re-check the settings and adjust, if required.
10.2 Align saw belt (set run of saw belt)
If the saw belt does not run in the centre of the
rubber tyres, the tracking needs to be corrected by
adjusting the tilt of the upper band saw wheel:
1. Release lock nut (26).
2. Turn setting knob (27):
– If the saw belt is to run more to the rear of the
saw: turn setting knob (27) clockwise.
– If the saw belt should run more towards the
front of the saw:
Turn the setting knob (27) anti-clockwise.
3. Retighten lock nut (26).
10.3 Align upper belt guide
The upper belt guide consists of:
– a thrust bearing (supporting the saw belt from
the rear),
– two guide bearings (providing lateral support).
These parts must be realigned after each saw belt
change and each saw belt alignment:
Note:
Periodically check all bearings for wear, if
necessary replace both guide bearings at the
same time.
Adjusting the thrust bearing
1. Loosen screw (29) for thrust bearing.
2. Align thrust bearing (28) (distance from thrust
bearing belt = 0.5 mm – when the saw belt is
moved by hand it must not touch the thrust
bearing)
3. Retighten screw (29) for thrust bearing.
Adjusting the guide bearings
4. Loosen screw (31) for guide bearing.
5. Move guide bearing (30) so that is gently
touching the saw belt.
6. Retighten screw (31) for guide bearing.
7. Set the guide bearing on the other side of the
saw belt in the same way.
10.4 Align lower belt guide
The lower belt guide consists of:
– a thrust bearing (supporting the saw belt from
the rear),
– two guide bearings (providing lateral support).
These parts need to be readjusted after every saw
belt change or tracking adjustment:
Note:
Periodically check thrust bearings and guide
bearings for wear, if necessary replace both guide
bearings at the same time.
Preparation
1. Open lower housing door and lower saw belt
guard (7).
Adjusting the thrust bearing
1. Loosen screw (33) for thrust bearing.
2. Align thrust bearing (32) (distance from thrust
bearing belt = 0.5 mm – when the belt is
moved by hand it must not touch the thrust
bearing)
3. Retighten screw (33) for thrust bearing.
Adjusting the guide bearings
4. Loosen screw (35) guide bearing.
5. Move guide bearing (34) so that is gently
touching the saw belt.
6. Retighten screw (35) for guide bearing.
7. Set the guide bearing on the other side of the
saw belt in the same way.
8. Close lower saw belt guard (7).
9. Close the lower housing door.