Draining The Fuel Tank - Volvo FM Handbook

538 Maintenance
felt. Venting is complete. It is not necessary to
open any nipples.
6 Start the engine and run it at idle.
7 If the engine is difficult to start, repeat the
venting.
8 Let the engine run at idle
9 Check for any leakage
10 Check that the engine runs evenly
11 Fit the sound insulation
Venting
1 Stop the vehicle
2 Apply the parking brake
3 Turn the key to the R-position
4 Press the switch for venting
A symbol is shown in the display.
5 Start the engine and let it run at idle
6 If the engine is difficult to start, repeat venting
7 Check for any leakage
8 Check that the engine runs evenly

Draining the fuel tank

Drain the fuel tank of any sludge and condensation
annually. By doing this, the risk of water getting into
the engine and causing running problems is avoided.
1 Place a receptacle under the bottom plug of the
fuel tank
2 Undo the plug and screw it out a few turns, so
that sediment and condensation water start to run
out of the drain hole in the plug. Do not remove
the plug, or all the fuel will also be drained
3 Leave it to run until pure fuel appears
4 Screw in the bottom plug
5 Empty the container in a place where it will not
constitute a risk to the environment
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