OM 803 us – Edition 3.7 * 803b510.fm 5-5
Maintenance
Fuel prefilter with water separator
Interrupt the fuel supply as follows:
☞Turn ball-type cock B to the OFF mark
➥Fuel supply is interrupted
☞Turn ball-type cock B to the ON mark
➥Fuel supply is open
Check the fuel prefilter as follows:
☞If the red indicator ring A rises to position C
☞Unscrew threaded fitting D
☞Prepare a suitable container for collecting the fuel/water mixture.
➥Fuel/water mixture drains
➥Wait until the indicator ring returns to the bottom of the water separator
☞Screw threaded fitting D back on again
Collect the fuel/water mixture as it drains with a suitable container and dispose
of it in an environmentally friendly manner.
Fig. 190: Fuel prefilter
On
Off
C
A
B
Fig. 191: Fuel prefilter
D
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