5-4 BA 901/1101 en – Edition 2.1 * 91101b510.fm
Maintenance
Bleeding the fuel system
If the fuel, as it drains, comes into contact with hot engine parts or the exhaust
system, there is an increased
Fire hazard!
☞ Never bleed the fuel system if the engine is hot!
Bleed the fuel system in the following cases:
• After removing and fitting the fuel filter, prefilter or the fuel lines back on again
• After running the fuel tank empty
• After running the engine again, after it has been out of service for a longer period of time
☞ Bleed the fuel system as follows:
• Fill the fuel tank
• Turn the starting key to the first position
• Wait about 5 minutes while the fuel system bleeds itself automatically
• Start the engine
If the engine runs smoothly for a while and then stops, or if it does not run smoothly:
• Stop the engine
• Bleed the fuel system again as described above
• Have this checked by authorized personnel if necessary
Fuel prefilter with water separator
Check the fuel prefilter as follows:
☞ Unscrew thread A
➥ The water drains
➥ Wait until fuel starts flowing (visual check), then close again.
➥ Screw thread A back on again
Thread A is fitted with a hose. Collect the water as it drains with a suitable container and
dispose of it in an environmentally friendly manner.
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