75MS 290, MS 310, MS 390
– Drain the fuel tank.
– Clean loose dirt from the air filter
and the area around it.
– Remove the air filter, b 11.1
: Pull tank vent valve (1) out of the
209RA047
VA
2
3
1
retainer (2) and off the hose (3).
: Connect vacuum pump
0000 850 3501 (1) with hose to
tank vent (2).
– Use vacuum pump to subject
tank vent valve to vacuum.
Equalization of pressure in the fuel
tank takes place via the tank vent
valve. There must be no build-up of
vacuum during the test. In the event
of a malfunction, install a new tank
vent.
: Pry the hose off the engine
housing nipple.
VA
209RA059
: Pry the grommet (1) out of the
handle housing.
: Take the hose (2) out of the
retainer (arrow).
VA
209RA058
1
2
– Remove the hose.
Clean the hose with compressed air
and a little standard solvent-based
degreasant containing no
chlorinated or halogenated
hydrocarbons, b 13.
Inspect components for damage
and cracks and replace if
necessary.
Install in the reverse sequence.
: Position the hose (1) behind the
grommet (2).
Fit the tank vent in the grommet so
that its stub points upwards.
Make sure the hoses are not kinked.
209RA060
VA
1
2
Install all other parts in the reverse
sequence.
11.5.2 Machines from 2002
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