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Fuel pre-filter replacement (if present)
Only proceed with the engine stopped.
Should the filter be fitted with a sensor to detect the presence of
water (3), remove the whole sensor from its seat.
Remove the pre-filter by unscrewing it.
Check that the new filter has performance levels that satisfy the
needs of the engine (e.g. by comparing them with the old one).
Damp the new filter seal with diesel or engine oil.
Hand screw the new filter into place until the seal gasket touches
the support, then lock by a further 3/4 of a turn.
Place the water presence sensor in its seat, taking care to couple
the threads correctly.
Loosen the bleeder screw (1) on the pre-filter support and
activate the hand pump (2) until the supply circuit is full. Ensure
that any fuel coming out is not dispersed into the environment.
Lock the bleeder screw tightly.
Start the engine and run it at idle for a few minutes to eliminate
any residual air.
Risk of burns.
Only carry out the following operation when the engine
parts have cooled down.
Failure to comply with these indications could result in
death or serious injury.
Fire hazard.
Pay the utmost attention to parts glowing with heat and
guards with warning pictograms.
Failure to observe these instructions could cause serious
health risks.
Fire risk!
Fire hazard: pay the utmost attention to flammable
liquids, dusts and vapours.
Failure to comply with these indications could result in
death or serious injury.
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