APRILIA 1115-2, Workshop Manual

Page: 141 / 386

FUEL SUPPLY SYSTEM
4 - 4
RSV mille
4.1.1 MAINTENANCE
NOTE ò
The pipes (1) and (2) are not provided and
the two couplings on the flange are plugged.
◆
When the fuel supply pump is to be removed, see 4.3
(REMOVING THE WHOLE FUEL SUPPLY PUMP
UNIT), it is advisable to make sure the pipes (1) (2) (3)
(4) are intact and that the following are working proper-
ly:
– fuel level sensor (5), see 6.10.2 (LOW FUEL WARN-
ING LIGHT);
– fuel supply pump (6), see 6.5.2 (CHECKING THE
FUEL PUMP).
◆
Change the delivery filter (7).
NOTE
During this procedure, it is also advisable to
wash the tank completely.
4.1.2 CHECKING THE FUEL SUPPLY
Check the fuel pipes every 7500 km (4687 mi) or 8
months; replace every 4 years.
a
WARNING
Check the delivery pipe (8), return pipe (9) and rele-
vant connections extremely carefully; the operating
pressure of the delivery pipe (8) is approx. 450 kPa
(4.5 bar).
Any fuel pipes featuring cracks or cuts must be replaced,
without exception.
Fuel leaking from the flange (10) might be due to a dam-
aged O-ring (11), consequently:
◆
Remove the whole fuel supply pump unit, see 4.3 (RE-
MOVING THE WHOLE FUEL SUPPLY PUMP UNIT),
check its state of repair and, where necessary, replace
it.
◆
Open the filler cap and make sure the vent on the tank
is not clogged. Where necessary, unclog it using a
compressed air jet.
NOTE
For further details see 6.5.2 (CHECKING THE
FUEL PUMP).
$2!).).' 4(% &5%, 4!.+
See 2.9 (DRAINING THE FUEL TANK) for the fuel tank
draining procedure.
Release 00/2002-10
- 00