Inlet Needle - Stihl MS 460 Service Manual

The diaphragm material as well as
the inlet and outlet valves are
subjected to continuous alternating
stresses and eventually show signs
of fatigue, i.e. the diaphragm
distorts and swells and has to be
replaced.
Install in the reverse sequence.
: Place the gasket on the
carburetor body.
The gasket and metering
diaphragm are held in position by
integrally cast pegs.
2
: Fit the metering diaphragm so
that the perforated plate (1) faces
the inlet control lever (2).
Install all other parts in the reverse
sequence.
MS 460, MS 460 C

12.3.2 Inlet Needle

– Remove the metering
diaphragm, b 12.3.1
: Take out the screw (arrow).
– Remove the inlet control lever
with spindle.
There is a small spring under the
inlet control lever which may pop
out during disassembly.
– Take out the inlet needle.
1
: If there is an annular indentation
on the sealing cone of the inlet
needle, fit a new inlet needle.
4
2
: Fit the inlet needle (1).
: Fit spring (2) in bore.
: Insert spindle (3) in the inlet
control lever (4).
– Engage clevis in annular groove
on head of the inlet needle.
– Press the inlet control lever down
and secure it with the screw.
Make sure the helical spring locates
on the control lever's nipple.
– Check that inlet control lever
moves freely.
The upper face of the inlet control
lever must be flush with the top of
the carburetor body.
– Install the metering diaphragm,
b 12.3.1
3
1
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