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6.7 Weekly maintenance
6.7.1 Check, clean the air filter
WARNING!
Do not use gasoline or cleansers with a low flash-point
to clean the air filter element. This could cause fire or
an explosion.
NOTICE!
Do not run the engine without an air filter, since this
could cause premature wear of the engine.
Contaminants or dirt must not enter into the intake
channel.
Contamination of the air filter depends mainly on the
proportion of dust in the intake air, if necessary clean
several times a day.
Air filters with damaged filter element or seal ring must
be replaced in any case. It is therefore recommended
to keep at least one air filter in stock.
The air filter must be changed after several times
cleaning, but at the latest after 1 year.
Each cleaning interval must be marked with a cross on
the cover of the air filter.
Cleaning does not make sense if the air filter is cov-
ered with a sooty deposit. Use a new air filter.
Incorrectly handled air filters may become ineffective
because of damage (e.g. cracks) and cause damage
to the engine.
Unscrew wing nut (1)
Fig. 37 and remove the housing
cover (2).
Clean the housing cover from inside.
Unscrew wing nut (3) and take off paper element (4) with the
foam rubber insert (5).
Check the rubber seal (6), replace if necessary.
NOTICE!
The rubber seal (6) frequently sticks to the paper ele-
ment.
Fig. 37
Maintenance
BVP 10/36 / BVP 18/45
54
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