Chapter 4 N37347
Page 36
Air lter
Caution: Do not operate the engine if there is a blockage in the air lter or the induction hose. This can cause
lubricating oil to enter the cylinders through the breather valve.
Environmental conditions have an important effect on the frequency at which the air lter needs service.
Air lters have automatic dust valves (Z1) through which dust is expelled from the lter. The rubber dust valve
must be kept clean. Ensure that the sides of the valves close completely together and that they can separate
freely.
If a restriction indicator (AA) is tted, it will indicate precisely when the air lter element needs replacement. This
prevents the premature removal of the lter element which causes extra cost or late removal of the element
which can cause loss of engine power. The lter element must be renewed according to the manufacturers
recommendations.
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