TOHATSU BFT 250A, Service Manual

Page: 87 / 639

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MAINTENANCE
FUEL FILTER (HIGH PRESSURE SIDE)
INSPECTION/REPLACEMENT
• Disconnect the battery cable from the battery
negative (–) terminal before relieving the fuel
pressure.
• Replace the sealing washer when the service check
bolt is loosened or removed.
• Catch the gasoline draining from the filter to avoid
contaminating the engine parts with gasoline.
Replace the fuel filter (high pressure side) at the
replacement interval shown or in the following case.
– Regular replacement period of every 2 years or 400
operating hours.
– When the fuel pressure does not reach 280 – 330
kPa (2.9 – 3.4 kgf/cm 2 , 41 – 48 psi) with the pressure
regulator vacuum tube connected, check the
following.
If the following items are normal, replace the fuel
strainer (high pressure side).
– Fuel pump (page 5-110)
– Pressure regulator (page 5-111)
Remove the R. engine under cover (page 6-3).
Relieve the fuel pressure (page 5-66).
Disconnect the fuel tube [1] from the diaphragm.
Remove the screws [2] and swing the diaphragm to the
side.
Place a rag or a shop towel over the strainer cover [1]
and remove the three screw/washers [2] and the
strainer cover.
Remove the fuel filter [3] and replace it if necessary.
Replace the O-ring [4] with a new one.
Install the fuel filter with the grommet [5] side facing out.
Install the strainer cover, screw/washers, and tighten
them to the specified torque.
Replace the sealing washer [6], and tighten the service
check bolt [7] to the specified torque.
Install the removed parts in the reverse order of
removal.
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.
[1] [2]
TORQUE: 3.4 N·m (0.35 kgf·m, 2.5 lbf·ft)
TORQUE: 12 N·m (1.2 kgf·m, 9 lbf·ft)
[1]
[2]
[3]
[4]
[6]
[7]
[5]