Valve - Stihl MS 270 User Manual

Take out the screws (arrows).
Remove the cover (1).
2 1
3
Carefully remove the sleeve (1)
from the hose.
Pull the hose (2) off the oil
pump (3) and take it out of teh
crankcase.
Install in the reverse sequence.
MS 270, MS 280
1
1
2
When installing, make sure the
hose is properly positioned (arrows)
and not kinked.
The hose (1) must be fitted
behind the brake band (2).
1
Fit the sleeve (1) in the hose.
– Carefully install the hose in the
crankcase, making sure the
sleeve does not drop out in the
process.
Use a suitable tool to carefully
press the sleeve (1) into position.
Reassemble all other parts in the
reverse sequence.
11.3

Valve

A vent valve is installed in the tank
wall to keep the internal pressure in
the oil tank equal to atmospheric
pressure.
Removing
– Remove the inner side plate
– see 5.4.2.
– Unscrew the oil filler cap.
– Drain the oil tank.
Collect chain oil in a clean container
or dispose of it properly at an
approved disposal site.
Use a 3 mm diameter drift to
carefully drive the valve out of the
housing from inside the tank.
Installing
Use a 7 mm diameter drift to
carefully push home the valve
until it is about 1 mm below the
housing face ('a' in illustration).
Reassemble in the reverse
sequence.
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