TOHATSU BFT 250A, Service Manual

Page: 235 / 639

5-113
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FUEL SYSTEM
FUEL PUMP (HIGH PRESSURE SIDE)
INSPECTION
DISCHARGE VOLUME INSPECTION
• Use a known-good battery for the voltage check.
Disconnect the pressure regulator return hose [1] and
connect a hose [2] that is equivalent to the pressure
regulator return hose to the pressure regulator.
Place a suitable container [3] under the hose as shown.
Turn the combination switch ON. Operate the fuel pump
for approximately 2 seconds and measure the fuel
discharge volume.
If the discharge volume is too small, check the following
and replace the fuel pump (page 5-86).
– Open circuit or poor contact of the main wire
harness
– Clogged fuel filter (high pressure side) or fuel hose/
pipe
– Check the pressure regulator for proper operation
(page 5-111).
If the fuel pump does not operate when the combination
switch is turned ON, inspect the fuel pump circuit (page
5-114).
Gasoline is highly flammable and explosive.
You can be burned or seriously injured when
handling fuel.
• Keep heat, sparks, and flame away.
• Wipe up spills immediately.
• Handle fuel only outdoors.
Discharge volume
0.06 liter (2.0 US oz, 2.1 Imp oz) or more
[1]
[3]
[2]