Stihl MS 290 Manual page 29

1
: Push the installing sleeve (1)
1122 893 4600 on to the
crankshaft stub.
1
: Use press sleeve (1)
1127 893 2400 to install the
"soft" oil seal.
– Wait about one minute, then
rotate the crankshaft.
– Install the oil pump, b 10.4.1
Install all other parts in the reverse
sequence.
28
1
Ignition side
– Remove the flywheel, b 7.3
: Apply puller (1) 5910 890 4400
with No. 3.1 jaws 0000 893 3706.
– Clamp the puller arms.
– Pull out the oil seal.
Take care not to damage the
crankshaft stub.
– Clean sealing face with standard
solvent-based degreasant
containing no chlorinated or
halogenated hydrocarbons,
b 13.
Z
1
If the engine has not been
disassembled, only the so-called
"soft" oil seal 9639 010 1743 may
be installed.
: Place the oil seal (2) in position
with the clamping ring (1) facing
up.
– Lubricate sealing lip of oil seal
with grease, b 13.
– Apply thin coating of sealant to
the outside diameter of the oil
seal, b 13.
If the engine has been dis-
assembled and the engine pan
removed, it is recommended that
the "hard" oil seal 9639 003 1743
be installed in place of the soft oil
seal 9639 010 1743 before the
engine pan is refitted.
Important:
Do not use a press to install the
hard oil seal 9639 003 1743.
Install hard oil seals as described in
b 6.7
Install in the reverse sequence.
MS 290, MS 310, MS 390
2