Assemble the cylinder
Check that the opening on the piston
rings align with the guide pin.
Assemble the cylinder
Check that the opening on the
piston rings align with the guide
pin.
Assembly
Oil in
Assembly
Oil in
New or cleaned bearings and piston rings
should be oiled in with 2-stroke oil before
assembly to initially ensure satisfactory
lubrication.
The arrow pointing towards the
exhaust port
The piston is not symmetrical. It is
important that the arrow is turned
towards the muffler when assembling the
piston on the connecting rod.
Fit the needle bearing in the con -
necting rod. Fit a circlip in the piston,
hold the piston in position, press in the
gudgeon pin and fit the other circlip.
Check that the circlips are seated correct-
ly in their grooves.
The arrow pointing
towards the exhaust port
Important to turn the arrow
towards the muffler when
assembling.
Fit the needle bearing in the
connecting rod. Fit a circlip on
the piston. Hold the piston in
position, insert the gudgeon pin
and fit the other circlip.
CYLINDER/PISTON
13
35
Cylinder foot gasket
It is very important that the cylinder foot
fits tightly to the crankcase. Carefully
clean any old gasket residue from the
surfaces that are in contact with the
gasket.
Note the gasket's assembly to the
cylinder. Turn the gasket ensuring the
impulse channel remains open to the
crankcase.
Cylinder foot gasket
Clean the surfaces thoroughly
from old gasket residue.
Note the gasket's assembly to
the cylinder.
Start by fitting the cylinder foot gasket.
Add the support plate under the piston.
Compress the piston rings with a suitable
piston ring compressor contained in tool
kit 502 50 70-01. Place the piston ring
compressor a few mm below the top of
the piston to facilitate the next step.
Start by fitting the cylinder foot
gasket. Add the support plate
under the piston. Press the
piston rings together using the
piston ring compressor.
2-str
ok
e
oil
Press down the cylinder over the piston
and let the piston ring compressor slide
over the piston until the cylinder has
past the piston rings.
Remove the piston ring compressor
and the support plate align the cylinder
on the crankcase.
Fit the screws on the base of the
cylinder and tighten these crosswise to a
torque of 8–9,5 lbf·ft/11–13 Nm.
Press down the cylinder over the
piston and let the piston ring
compressor slide over the piston.
Fit the screws on the base of
the cylinder and tighten these
crosswise to a torque of
8–9,5 lbf·ft/11–13 Nm.
