28
english
HT 70, HT 75
: Turn the bar over –
every time you sharpen the chain –
and every time you replace the
chain – this avoids one-sided wear,
especiallly at nose and underside of
the bar.
Regularly clean
1 = oil inlet hole
2 = oil passage
3 = bar groove
: 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.
Dirty air filters reduce engine power
increase fuel consumption and make
starting more difficult.
If there is a noticeable loss of engine
power
: Move choke lever to g.
: Press in the tab (1).
: Ease the filter cover (2) over the tab
and take it away.
: Clean away loose dirt from around
the filter.
: Remove the foam and felt filter
elements.
Taking Care of Guide Bar
3
2
1
390BA050 KN
Chain type Chain pitch Minimum
groove depth
Picco-Mini 3/8" P 5.0 mm
(0.20")
Cleaning the Air Filter
355BA014 KN
2
1
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