Maintenance 5
Engine
Changing the air filter safety car-
tridge
d3941346
1
2
¾ Change the safety cartridge (1):
• Two years after it has entered operation at
the latest.
• If the air filter vacuum disp
lay lights up again
immediately after the air fi
lter cartridge has
been serviced.
• If you have a defective air filter cartridge.
CAUTION
Safety cartridges must not be cleaned or reused.
Do not start the engine without an air filter cartridge.
The function of the safety cartridge is to prevent
dust penetration while the main cartridge is being
changed or if a damaged main cartridge is acciden-
tally used.
¾ Switch off the engine.
¾ Open the bonnet.
¾ Take off the air filter cover and remove the
air filter cartridge (2).
¾ Pull out the safety cartridge.
¾ Insert the new safety cartridge.
¾ Fit the air filter cartridge and attach the air
filter cover.
¾ Close the bonnet.
Check the dust discharge valve
The dust discharge valve (1) is largely mainte-
nance-free.
¾ Open the bonnet.
Operating Instructions – 394 807 10 01 EN – 07/2011 141
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