23HT
English / USA
: Measure groove depth –
with scale on filing gauge – see
"Special Accessories" – in area
used most for cutting on Rollomatic
bars.
If groove depth is less than specified:
: Replace the guide bar.
The drive link tangs will otherwise
scrape along the bottom of the groove –
the cutters and tie straps will not ride on
the rails.
: Remove the chain sprocket cover,
chain and guide bar.
Replace the chain sprocket:
– after using two Oilomatic chains or
sooner
– if the wear marks (dimension a)
on the sprocket are deeper than
0.02 in (0.5 mm) – the life of the
chain would otherwise be reduced.
Use reference gauge (special
accessory) to check the depth of the
wear marks.
The service life of the chain
sprocket is prolonged if it is used
with two chains in rotation.
Use only original STIHL replacement
sprockets.
The chain sprocket is driven via a friction
clutch and must be replaced by a
servicing dealer.
STIHL recommends that you have
maintenance and repair work performed
only by a STIHL servicing dealer.
Chain type Chain pitch Minimum
groove depth
Picco-Mini 3/8" P 5.0 mm
(0.20")
Checking and Replacing
the Chain Sprocket
a
000BA054 KN
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