Stihl MS 250 - Maintaining and Sharpening Saw Chain; Correctly sharpened chain; You must observe certain angles...

57MS 210, MS 230, MS 250
Removing
– Remove the connector –
b 10.2.
: Pry out the lower annular buffer.
VA
135RA173
: Fit lever (1) of installing tool
1123 890 2201 in the bore for the
annular buffer – from inside.
VA
135RA174
1
: Screw fork head (1123) with
threaded stem (from installing
tool) into the oil pump.
VA
135RA175
: Swing lever (1) down into fork
head (2) and secure it with the
connecting pin (3).
V
A
13
5R
A
17
6
1
2
3
: Swing lever upward to pull the oil
pump out of the housing.
– Unscrew the oil pump from the
fork head.
VA
135RA177
Installing
: Place the oil pump in position so
that its groove (1) lines up with
the square (2) on the housing.
V
A
13
5R
A
17
8
1
2
: Place the fork head (1123/01)
with the straight stem (from
installing tool) in the oil pump.
– Fit lever in fork head and secure
in position.
: Press the lever down until the
fork head butts against the
engine housing. The oil pump is
now installed at the right depth.
– Remove the lever.
: Push the annular buffer into the
housing until its groove engages
over the housing rib.
– Fit the connector – b 10.2.
10.5 Oil Pump