Stihl TS 400 - Piston Rings; Decompression Valve

STIHL TS 400 22
• Slide manifold (1) onto the intake
port.
• Slip on the hose clip (2) so that the
tensioning screw (3) is at the top.
• Tighten the tensioning screw
until a gap of a = 6 ± 0.5 mm
remains between the tabs.
The remaining parts are installed and
reassembled in reverse order.
• Fit new piston rings in the annular
grooves with the bevelled slopes at
the ends facing towards the piston
head.
- Install piston, see chapter 5.6.2.
• Screw in the cylinder base screws
and alternately tighten them cross-
wise with a torque of 10.0 Nm.
- Remove piston, see chapter 5.6.1.
- Remove piston rings from piston.
• Scratch carbonized residues out
of the grooves with an old piece of
piston ring.
- Remove shroud, see chapter 5.5.
• Unscrew decompression valve
from cylinder.
- Screw in decompression valve and
tighten with a torque of 14 Nm.
- Install shroud, see chapter 5.5.
5.7 Piston rings 5.8 Decompression valve