Stihl MS 650

88 MS 650, MS 660
– Drain the fuel tank.
– Drain the oil tank.
Collect fuels and lubricants in clean
containers or dispose of properly in
accordance with regulations.
– Remove the front handle –
b 10.3
– Remove the shroud – b 6.2
– Remove the carburetor –
b 12.2.1
– Remove the fan housing with
rewind starter – b 8.2
– Disconnect or remove the short
circuit wire and ground wire from
the ignition module – b 7.2.1
Machines with handle heating
and/or carburetor heating
– Remove the ignition module –
b 7.2.1
: Pull connectors (1) out of guide
(arrow) and disconnect.
178RA165
VA
1
1
: Push the wires (1) inwards
through the grommet.
178RA166
VA
2
1
: Take the sleeve (1) out of
the manifold and pull off the
washer (2).
1
2
178RA050
VA
: Push the manifold flange through
the housing opening.
178RA167
VA
: Take out the screw (1).
– Remove the annular buffers at
both sides – b 9.1
178RA168
VA
1
: Pull off the impulse hose (1).
– Carefully separate the crankcase
from the tank housing.
– Replace the tank housing –
b 12.11
178RA169
VA
1
– Replace the crankcase – b 6.7
Note the following points when
reassembling.
12.10 Separating Crankcase
and Tank Housing