Metabo BW 750 Operations Instructions Page 14

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14
ENGLISH
4. Return feed rocker completely to
the starting position.
3
Note:
If the log was not completely sep-
arated, turn it over and repeat the cutting
operation from the opposite side (revers-
ing cut).
5. Remove the cut-off section from the
feed rocker.
6. Clean the feed rocker, to provide
secure holding for the next log to be
cut.
7. Now the next log can be cut.
8. If no further cutting is to be done
immediately afterwards, turn
machine OFF.
3
Note:
The humming sound after switch-
ing OFF is caused by the responding
electronic motor brake. It is not a
machine fault!
AHazard generated by post-run-
ning of the saw blade!
The electronic motor will only work when
the machine is connected to power.
Unplug only after the saw blade has
come to a complete stop.
ADanger!
Prior to all servicing:
1. Switch machine OFF
2. Wait for saw blade to stop
3. Unplug power cable
Check that all safety devices are
operational again after each service.
Replace damaged parts, especially
safety devices, with genuine
replacement parts only, since parts
not tested and approved by the
manufacturer can cause unforesee-
able damage.
Repair and maintenance work other
than described in this section should
only be carried out by qualified spe-
cialists.
7.1 Saw blade change
ADanger!
Directly after cutting the saw blade
can be very hot – burning hazard! Let
a hot saw blade cool down.
Risk of injury, even with the blade at
standstill. Wear gloves when chang-
ing blades.
For a saw blade change the rocker
must be fully lowered. To do so,
remove the stop limiter and extension
arm lever as described below. Take
care the rocker will not drop all of a
sudden!
Note that the extension arm lever is
under spring tension!
1. Dismount the extension arm lever
(20) – the spring can remain on the
lever.
2. Dismount stop limiter (21) from the
rocker.
3. Lower the feed rocker carefully.
4. Remove the blade guard (19).
5. Hold outer blade flange (24) with
assembly wrench and loosen the
arbor bolt (26) (R.H. thread!).
6. Remove arbor bolt (26), spring lock
washer (25) and outer blade flange
(24) from the saw spindle (23).
7. Take the saw blade (22) off the saw
spindle.
8. Clean clamping surfaces of:
saw spindle,
saw blade,
outer blade flange,
washer,
arbor bolt.
ADanger!
Do not use cleaning agents (e.g. to
remove resin residue) which could
corrode the light metal components;
this can have an adverse effect on the
machine's stability.
Do not clean the saw blade with com-
bustible liquids.
9. Fit a new saw blade, observing the
direction of rotation.
ADanger!
Use only saw blades conforming to
the technical specifications and
EN 847-1 – parts of unsuitable or
damaged saw blades may be hurled
away explosive-like.
Do not use:
saw blades made of high speed
steel (HS or HSS);
saw blades with visible damage;
cut-off wheel blades.
ADanger!
Mount saw blade only using gen-
uine parts.
Do not use loose-fitting reducing
rings; the saw blade could work
loose.
Saw blades have to be mounted
in such way that they do not wob-
ble or run out of balance and can
not work loose during operation.
10. Put the outer blade flange on –
the key on the saw spindle must
engage in the groove of the outer
blade flange!
11. Insert the washer, screw arbor bolt
in (right-hand thread!) and tighten.
ADanger!
Do not extend arbor bolt tighten-
ing wrench.
Do not tighten arbor bolt by hit-
ting on the assembly wrench.
After tightening the arbor bolt,
remove the assembly wrench.
12. Replace the blade guard.
13. Lift the feed rocker back to its start-
ing position.
14. Install the stop limiters.
15. Install the extension arm lever.
7. Care and Maintenance
18
19 20
21
26
25
22
24
23
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