5.5.
Maintenance every
1000
hours
of operation
5.5.1. Renewing the fuel filter
Do not smoke and never bring a naked
flame near the fuel system when work-
ing on it.
– On the encapsulated engine, take off the cap-
sule hood (see Chapter 2).
– On non-encapsulated engines, take off the side
trim.
– Place an absorbent cloth or wadding under the
filter to trap escaping fuel.
– Close the fuel supply line.
Note:
Fuel filter maintenance intervals depend on the
purity of the fuel used in the engine and should
be reduced to 500 hours if necessary.
Renewing the fuel filter
(on 2-4L41 C and 2-4M41 engines)
54
– Push on strap wrench „1“ and unscrew the
replaceable filter element by turning to the left.
Order number for strap wrench: 620 307 01.
– Oil the sealing lip of the new filter element
lightly.
1
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2
– Install the
filter element
and
screw up
handtight.
– Open the fuel supply line again.
55
Note:
To make starting easier, it is best to prime the
fuel delivery pump at lever „1“ until fuel is heard
to flow back through return line „2“ and into the
fuel tank.
– Operate the lever to check for leaks.
– Install the enclosure and air guide elements
again.
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1
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