Stihl 088 - Installation

STIHL 088 21
• Ease the hookless snap rings out
of the grooves in the pistons.
• Inspect piston rings and replace if
necessary - see 4.6.
• Push the assembly drift, small
diameter first, through the piston
and small end (needle cage) and
line up the piston.
• To ease assembly, heat the piston
slightly and slip it over the
connecting rod.
- Check installed position of piston:
1 = Mark
2 = Flywheel
4.5.2 Installation
• Thoroughly clean the gasket
seating surface (1).
• Lubricate the needle cage (2) with
oil and fit it in the small end.
• Use the assembly drift (2)
1111 893 4700 to push the piston
pin (1) out of the piston.
Note: If the piston pin is stuck, tap the
end of the drift lightly with a hammer
if necessary.
Important: Hold the piston steady
during this process to ensure that no
jolts are transmitted to the connecting
rod.
- Remove piston and take the needle
cage out of the connecting rod.
• Release the hose clamp (1).
• Pull the manifold (2) off the intake
port.
- Inspect the cylinder and replace it
if necessary.
- If a new cylinder has to be
installed, always fit the matching
piston. New cylinders are only
supplied complete with piston for
this reason.
- Before removing the piston,
decide whether or not the crank-
shaft has to be removed as well.
To remove the flywheel, block the
crankshaft by sliding the wooden
assembly block between the
piston and crankcase.
- Remove the cylinder gasket.