Stihl MS 270 User Manual

Online version - not for reprint
43MS 270, MS 280
 Position the piston rings so that
the radii at the ring gaps meet at
the fixing pins (arrows) in the
piston groove when the rings are
compressed.
VA
138RA035
Removing
– Remove the chain catcher
– see 5.2.
– Remove the chain brake
– see 5.4.2.
– Remove the cylinder – see 6.5.1.
– Drain the oil tank.
– remove the oil pump – see 11.4.
– Remove the flywheel – see 7.3
 Lift the crankshaft (1) with
piston (2) out of the
crankcase (3).
– Pull off the oil seals.
VA
146RA071
1
2
3
 Check the ball bearings (arrows)
on crankshaft (1) for damage and
replace if necessary.
VA
146RA072
1
If the ball bearings are damaged,
remove them as follows:
 Heat the ball bearing (arrow) to
about 50°C and pull it off the
crankshaft.
The crankshaft and connecting rod
form an inseparable unit. This
means that the crankshaft must
always be replaced as a complete
VA
135RA100
unit in the event of damage to either
part.
If the crankshaft has to be replaced,
remove the piston – see 6.5.1.
6.7 Crankcase
6.7.1 Crankshaft

Stihl MS 270 Specifications

General

Brand	Stihl
Model	MS 270
Category	Chainsaw
Language	English