Fuel system, bleeding
The fuel system must be purged after a filter change,
if the fuel tank has been run dry and after a long-term
stoppage.
1 Open the purge screw (1) on the fuel filter approx.
three turns. Avoid fuel spills; use rags to soak up
fuel at the purging point.
2 Pump fuel up with the hand pump (2) until fuel with-
out air bubbles can be seen. Continue pumping and
tighten the purging screw at the same time.
The pump inlet pipe contains a strainer (3) which
normally does not need to be cleaned since the
engine has a fuel pre-filter. If a fuel pre-filter is not
fitted, poor feed flow can be due to a blocked
strainer.
If either of the two O-rings (4) are damaged, they
must be replaced.
3 Start the engine and check for leaks.
Fuel pre-filter
The fuel pre-filter is an optional extra.
Draining
Wait a few hours after the enginehas been turned off
before draining the filter..
Position a container under the fuel filter. Drain offwater
and contaminants using the cock/plug at the bottom of
the filter bowl.
Replacing filter insert
1 Close fuel cock at the fuel tank. Position a contain-
erunder the fuel filter.
2 Remove the filter bowl by undoing screw (1).
3 Emptyand clean the filter bowl. Replace insert and
reinstallthe bowl.
4 Open fuel cock.
5 Vent the fuel system, please refer to sectionFuel
system, bleeding page 42.
6 Start the engine and check for leaks.
7 Depositthe old filter insert at a properly designated
disposal site.
Maintenance
42 47702088 05-2011
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