7.12 Air Intake
7.12.1 Contamination indicator – Signal ring position check
Preconditions
☑ Engine is stopped and starting disabled.
Checking signal ring position
1. If the signal ring is completely visible in the
control window (2), replace air filter
(→ Page 204).
2. After installation of new filter, press reset
button (1).
Result: Engaged piston with signal ring moves back
to initial position.
206 | Task Description | MW15550/06E 2012-02
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