Impulse Hose; Tank Vent; Testing - Stihl MS 240 Instruction Manual

14.6.2 Impulse Hose

A damaged impulse hose can result
in engine running problems.
– Remove the carburetor, b 14.2
– Take out the annular buffer/tank
housing mounting screws.
Annular buffer at ignition side,
b 11.3.
Annular buffer at clutch side,
b 11.2
– Push the manifold flange out of
the tank housing, and lower the
tank housing slightly,
b 14.6.1
1
: Pull the impulse hose (1) off the
connector (arrow).
96
1
: Pull the impulse hose (1) out of
the tank housing in the direction
of the throttle trigger.
– Check the impulse hose (1) and
replace if necessary
1
: Push the impulse hose (1)
through the opening (arrow) and
pull it in until its rubber lip is
properly seated.
– Coat with STIHL press fluid,
b 17
1
: Push the impulse hose (1) on to
the connector (arrow).
– Reassemble all other parts in the
reverse sequence.
14.7

Tank Vent

14.7.1 Testing

If problems occur on the carburetor
or the fuel supply system, also
check and clean the tank vent and
replace it if necessary. Check
function by performing pressure and
vacuum tests on the tank via the fuel
hose.
– Open the fuel tank cap and drain
the fuel tank.
– Collect the fuel in a clean
container, b 1
– Close the tank cap.
MS 240, MS 260, MS 260 C