COMCO IKARUS
Maintenance Manual C42 Series
MaintenanceManual C42-
Series_Issue_VII_18.02.2014.doc
Revison No.:1 68 from 107
4.3.2 Fuel system
4.3.2.1 Checking cleanliness in the fuel tank
First, the tank must be emptied. With the help of a torch, the tank is then screened
from the outside. Dirt usually collects in the sump. If contamination is found, the tank
can be washed out with methylated spirits. This work should be carried out by an
IFC. In case of doubt, the tubular-type fuel level sensor should be removed and the
tank interior screened with a torch.
Attention: The screw patterns of the tubular-type sensor attachment screws is not
symmetrical - mark positions with a felt pen before removing.
Figure 59: Fuel sump
4.3.2.2 Checking the electrical fuel pump
To check the output of the electrical fuel pump, the fuel hose must be removed from
the mechanical fuel pump (with the engine shut down). The hose end is placed in a
measuring beaker. The fuel valve is then opened and the electrical fuel pump
switched on. At full throttle, fuel flow into the measuring beaker must reach at least
125% of declared engine consumption.
80 hp engine:
Consumption: 24 litres/hour which means a fuel flow of 30 litres/hour or more than
500 millilitre/minute
100 hp engine:
Consumption: 27 litres/hour which means a fuel flow of 33.75 litres/hour or more than
562 millilitre/minute
fuel lines
drainage
valve tube
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