STIHL 019 T
22
4.7
Piston
- Pull the piston out of the cylinder
• Ease the hookless snap rings out of
the grooves in the piston bosses.
• Inspect piston ring and replace if
necessary - see 4.8.
- Oil needle cage in the small end.
• Fit the engine pan so that the seat
(1) for the oil pump is at the same
side as the long crankshaft stub (2).
- Insert screws and torque down to
8.0 Nm (5.9 Ibf.ft).
- Fit the spacer flange - see 10.7.
- Fit the air baffle.
- Install the flywheel - see 5.3.
- Install and adjust the ignition
module - see 5.2.
- Install the carburetor - see 10.5.2.
- Install the muffler - see 4.3.
- Install the engine - see 4.2.
• Use the assembly drift (2)
1130 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.
Important:
Hold the piston steady
during this process to ensure that no
jolts are transmitted to the connecting
rod.
- Remove the piston from the
connecting rod.
• To ease assembly, heat the
piston slightly and push it over
the connecting rod.
• Installed position of piston:
1 = Arrow
2 = Long stub of crankshaft
• Push the assembly drift, small
diameter first, through the piston
and small end (needle cage) and
line up the piston.
