540
PROPULSION SYSTEMS
Studio ti 03312 540-04usa
162
8
Replacement of the filtering element
Replace the element according to the intervals suggested by
manufacturer or in case of power losses; a power loss indicates that the
element is restricted.
As a rule, when the pressure gauge (6) shows 6-10 inches of mercury
(inch Hg), it should be time for maintenance.
The current values varies in the different fuel systems. Also other extra
elements, such as a full tank or excessively contaminated fuel may
obstruct the filter.
− Close the valve.
− Remove the cover.
− Remove the element by holding the handle and pulling lightly forward
with a twist movement.
− Replace the cover seal with the seal pertaining to the new element.
Apply a layer of clean fuel or engine oil on the seal before
reinstallation, fit the new element with a slow twist movement
downwards.
− Fill the device with clean fuel, then replace the cover. Tighten T-
handle by hand and reopen by hand.
− Start the engine and check for leaks. If necessary, remedy with the
engine off.
Troubleshooting procedure
The main cause of a weak start or of a power loss is the result of an
obstructed filter or an air loss in the fuel system. If the device does not
start or does not hold the low idle, check first of all the cover and vent it,
if it hadn’t been properly closed. Then check all the pipe connections and
make sure no fuel pipe is obstructed by contaminants. If the fuel tank is
equipped with a built-in filter, check if it is obstructed. If the problem
continues and the filtering element is new, contact your dealer.
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CAUTION
The separators have to be checked at regular intervals as suggested by
manufacturer, so as not to impair the engines operation.
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WARNING
If the engine must be running, select the filter which has to remain in-
line and carry out maintenance on the filter not in-line. This operation is
a good procedure also when the engine is off.
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