Checking The Check Valve - SELVA MARINE Blue Whale 250 EFI Service Manual

FUEL

Checking the check valve

1. Connect the special service tool to the
check valve port as shown.
Vacuum/pressure pump gauge set:
90890-06756
2. Apply positive pressure to the check
valve port.
3. Check that air comes out of the opposite
end of the check valve. Replace if no air
comes out.
4. Connect the special service tool to the
opposite check valve port as shown.
5. Apply positive pressure to the check
valve port.
6. Check that no air comes out of the oppo-
site end of the check valve. Replace if air
comes out.
4-21
Fuel system
6P23H11