Stihl MS 171 Manual page 70

1
– Coat profile on oil suction
connector with oil, b 16
: Press home the oil suction hose
(1) until the tab is completely
flush with the guide (arrow) in the
engine housing
– oil suction hose is now secure.
– Check position of pickup body. If
necessary, use hook
5910 893 8800 to position it
properly.
The flange of the oil suction hose
must locate flush against the engine
housing.
– Reassemble all other parts in the
reverse sequence.
– Tightening torques, b 3.5
13.3 Removing and Installing
the Oil Pump
The oil pump is press-fitted in the
underside of the engine housing.
A malfunction may be caused by the
worm or the pump itself.
The worm is removed and installed
at the clutch side, b 8.3
– Remove the handle frame,
b 11.4
MS 171, MS 181, MS 211
All manuals and user guides at all-guides.com
1
: Pry the oil suction hose (1) out of
the oil pump (arrow).
1
: Screw the puller (1) 1130 into the
oil pump as far as stop.
: Place the installing tool (1)
1123 890 2202 in position and
push the pin into the bore (arrow).
: Place the lever of the installing
tool (1) in the puller and secure it
with the pin (arrow).
: Swing the lever upwards to pull
the oil pump out of the engine
housing.
– Unscrew the oil pump from the
1
puller. Inspect it and replace if
necessary.
1
: Line up the oil pump (1) as shown
by the symbol (arrow) – the
countersunk bore must line up
with the cross bore in the oil
pump's seat.
1
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