TOHATSU BFT 250A, Service Manual

Page: 242 / 639

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FUEL SYSTEM
VALVE OPERATION INSPECTION
• Do not adjust the stop screw. It was preset at the
factory.
Check the IAB control valve [1] for smooth movement.
Check the IAB valve shaft for binding or sticking.
Check that there is no clearance between the stop
screw and the fully closed position stopper when the
IAB control valve is fully closed.
Check that there is no clearance between the IAB
control valve and the fully opened position stopper
when the IAB control valve is fully opened.
If the IAB control valve does not move smoothly, clean
it with a carburetor cleaner.
• Always use Honda Genuine Carburetor Cleaner.
• IAB control valve is molybdenum coated; do not
clean the valve excessively.
• Do not spray carburetor cleaner directly to the shaft
of the IAB control valve.
EOP SWITCH (HIGH PRESSURE SIDE)
INSPECTION
SWITCH WIRE HARNESS INSPECTION
Remove the cylinder head (page 14-22).
Disconnect the switch wire 6P connector [1] from
the main wire harness.
Check for continuity between the Yellow/Red and
Green terminals of the switch wire 6P connector.
• If there is continuity, the switch wire harness is OK.
• If there is no continuity, check for an open in the
wire.
If the wire is OK, check the EOP switch (high
pressure side).
[1]
SWITCH WIRE 6P CONNECTOR
(Yellow/Red)
(Green/red)
Viewing connector
from the front side
[1]