Tank Cap; Oil Pump; Removing And Installing - Stihl MS 290 Manual

10.3

Tank Cap

4 3 2
– Drain the oil tank.
Collect chain oil in a clean
container. If necessary, dispose of it
properly at an approved disposal
site.
Machines up to 1998
: Carefully squeeze the hook (1)
and pull it out of the engine
housing.
: Remove the sealing ring (3).
: Take cord (2) off the tank cap (4).
2
Machines from 1998
: Carefully disconnect nipple (1) of
cap retainer from the guide (2) in
the engine housing.
62
1 2
: Remove the sealing ring (1) from
the tank cap (2).
Install in the reverse sequence.
Always install a new sealing ring.
1
10.4

10.4.1 Removing and Installing

1
– Remove the clutch, b 5.5
– Remove the worm with drive
spring (arrow).
: Take the drive spring (1) off the
worm (2).
: Use a suitable tool to push the
hose (2) down and off the pump.
: Take out the screws (1).

Oil Pump

1
1
MS 290, MS 310, MS 390
2
2