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Tension Idler
Cover
Fig.14
If excessive slipping has occurred, the pulleys
can become worn. A worn pulley is evidenced by
the groove having lost its well defined “V” shape,
resulting in a rounded or flattened groove. To
replace either pulley, contact your ARBORTECH
authorised service centre.
7.3 Blade Mount Bolts and Threads
The blade cap screws should be regularly checked
for correct torque (16Nm.)(11.5 ft lb).Whenever
blades are changed, the bolt and conrod threads
should be checked to ensure they are not worn or
filled with debris. Use only genuine ARBORTECH
spares and do not lubricate bolts, threads or conrod
mating surfaces.
Fig.15
CAUTION: DO NOT operate the tool with loose
blades. If blades should come loose while
operating, the blade mounts and threads can
become damaged, requiring significant repairs
to the tool.
7.4 Tooth Sharpness
With use, the blades will become dull and the
cutting performance will decrease. This can be
largely restored by re-sharpening the teeth. To
re-sharpen blade teeth, use the ARBORTECH
Sharpening disk (BLA.FG.SHARP001) Occasionally,
if very hard materials are cut, or the teeth impact a
hard surface at an odd angle, teeth may become
chipped or broken. The blades can still be used,
but cutting performance will be reduced.
If “blueing” of the blade periphery occurs, the
blades are running too hot. This occurs when the
blades become worn, too much force being used,
insufficient “sweeping” motion by the operator, or
material being too hard.
IMPORTANT To ensure optimal performance and
reduce load on motor, Blades should be kept sharp.
8. ACCESSORIES
8.1 Dust Extraction
The AS170 should be fitted with a dust extraction
funnel, which significantly reduces airborne and
heavy dust when used correctly. It consists of a
fitting attached to the underside of the aluminium
housing and an adjustable extraction funnel which
is replaceable. The dust extraction fitting has a
standard 30mm (1 3/16”) bore.
NOTE: Failure to use the dust extraction funnel
when cutting masonry materials will cause
excessive wear of electrical components.
Damage caused by dust will lead to premature
failure of the motor, which will affect the
warranty.
CAUTION: Verify that the vacuum machine being
used has a filter system appropriate for the
material being cut. Incorrect filtration can result
in inadequate dust control and also possible
damage to the vacuum machine.
Dust extraction funnel
ENGLISH 10
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