Fuel Pressure Regulator; Inspection - TOHATSU BFT250A Service Manual

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FUEL PRESSURE REGULATOR

INSPECTION

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.
Relieve the fuel pressure (page 5-66).
Remove the service check bolt and set the special tool
in the threaded bolt hole.
TOOL:
Fuel pressure gauge,
0 – 100 psi [1]
Check that the pressure regulator vacuum tube [1] is
not bent, disconnected, or damaged.
Remove the propeller:
– Standard rotation type (page 16-6)
– Counter rotation type (page 17-5)
Set the gear case in a test tank filled with water and
start the engine and then check the fuel pressure.
With the engine idling, disconnect the vacuum tube
from the intake manifold [2] and clamp the vacuum
tube.
Check the fuel pressure. It should be higher than the
pressure measured with the vacuum tube connected.
Standard fuel pressure
[At idle speed of 650 ± 50 min
280 – 330 kPa (2.9 – 3.4 kgf/cm
07406-004000B
[1]
-1 (rpm)]:
2
, 41 – 48 psi)
PRESSURE
REGULATOR
FUEL
INJECTOR
FUEL SYSTEM
[1]
[2]
VAPOR SEPARATOR
VACUUM TANK
[1]
[2]
5-111