Instruction manual SMV 10 600B – 60 1500B Publ. no. 6196.082 1117, Version 02
67
Service and maintenance
Bleeding of fuel system
Air might enter the fuel system when:
• the fuel tank has run completely dry.
• fuel pipes are replaced.
• the fuel filter is replaced.
BE CAREFUL
A leaking seal will allow air to enter the system
and thus prevent the flow of fuel from the tank to
the fuel pump.
To bleed the fuel system, do as follows:
• Ignition on.
• Connect a clean plastic hose to the bleeding screw (1). Connect
the other end to a clean container with fuel.
• Open the bleeding screw (1).
• Pump the fuel using a hand pump (2) until the fuel coming out
is free from air (1).
– If the system is completely empty, you need about
250 pumping actions.
– After replacing the fuel filter, about 170 pumping actions are
needed.
– To bleed a fuel pipe, about 150 pumping actions are needed.
• Open the bleeding screw (1).
• Loosen the connection on the excess pressure valve (3) and pump
using the hand pump (2) until the excess pressure valve (3) opens.
If the engine does not start.
• Reopen the bleeding screw (1) and pump with the hand pump
until fuel free from air streams out from the bleeding screw (1).
• Fit the bleeding screw (1). Start the engine and check that there
are no leaks.
