011 Quantity Control - Stihl 090 Instruction Manual / Owners Manual

Oil quantity control
Top: 1
=
Adjusting screw
2
=
Counter nut
Bottom: Loosening the counter nut
At the factory the chain oil supply of the oil pump is adjusted
to
the standard cutting lengths of 53 em (20.9 in.) bar for
090, 090 AV, 90 em (35.4 In.) bar for 090 G. When using
longer guide bars rt is possible
to
adjust the 011 quantity
according to the bar length used by means of the provided
adjustmem screw.
Before readjusting the oil quanttty remove Mer cover and
fllter, flrst, however, close choke shutter (posrtion "0") so
that no dirt can drop Imo the carburetor.
. Top: . Adjusting
the
oil quantity
Bottom: Countering
The adjusting screw for regulating the oil quantity is located
althe rear-wall of the 011 tank and is coumered with a hexa-
gonal nut. Hold adjusting screw wlth fork wrench SW 10
and loosen counter nut wrth second wrench . .
When tuming the adjusting screw to the left - counter
clockwise - more 011 Is supplied and when tuming to the
right less 011 is supplied. Tuming the adjusting screw
'/3
of
a tum corresponds approx. to the necessary change of oil
supply which is needed for the next longer bar length.
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