Bearings / Crankcase - Stihl MS 200 Service Manual

8.5.2

Bearings / Crankcase

Each half of the crankcase can be
replaced separately if it is damaged.
New crankcase halves are supplied
with the main parts preassembled
– see the parts list.
Parts not supplied with the new
crankcase must be transferred from
the original crankcase – check the
parts and replace if necessary.
If a new crankcase is installed, the
machine's serial number must be
stamped on it with 2.5 mm figure
stamps.
If the original crankcase is used
again, replace the oil seals and
roller bearings, remove any gasket
residue and clean the sealing
surfaces thoroughly. The sealing
faces must be clean to guarantee a
perfect seal.
Inspect both halves of the
crankcase for cracks and all sealing
faces for signs of damage.
– See also Troubleshooting,
b 4.7
– Pull out the ignition lead and
remove the crankshaft, b 8.5.1
– Wear protective gloves to reduce
the risk of burn injury.
As the crankcase halves have to be
heated to remove and install the
roller bearings, all heat-sensitive
parts have to be removed.
MS 200, MS 200 T
1
: Pry out the bumper strips
(arrows).
: Pull out the oil suction hose (1).
1
: Pry out the grommet (1) and pull
it off the short circuit wire.
1
: Pull out the grommet (1) and take
it out of the crankcase with the
short circuit wire.
– Remove and disconnect the oil
tank cap, b 13.1
– Unscrew the annular buffer,
b 11.3
Ignition side of crankcase
: Use a suitable punch to carefully
drive out the oil seal.
: Check and clean the crankcase
or replace if necessary.
If this half of the crankcase is in
order, install a new roller bearing.
39