Volvo L20B, Owner'S Manual

Page: 73 / 110

Maintenance
Maintenance every 10 operating hours 71
Cleaning and changing the air filter
Intensive cleaning:
– Blow the cartridge out with dry compressed air (pressure not
higher than 5 bar / 72.5 psi) from inside under an oblique angle
until no dust can be seen anymore.
– Then inspect the filter with a lamp from inside to outside
for possible cracks.
– Use only genuine filter cartridges. Non-genuine filters do
not fit and cause danger to the engine!
Safety cartridge (C)
While servicing the main cartridge (paper cartridge) the safety
cartridge remains inside the air filter.
Safety cartridges must be renewed:
– After three times servicing of the main cartridge.
– The number of services (exchange or cleaning of the main
cartridge) must be marked in the respective fields on the
safety cartridge.
– At the latest after two years of use.
– If the service indicator comes on again immediately after the
service.
– After using a damaged main cartridge by mistake.
Safety cartridges must not be cleaned.
The engine must not be operated with just the safety cartridge
on its own (without main cartridge).
M300059A
C
B
A