Fuel Pressure Relieving - TOHATSU BFT75A Service Manual

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FUEL SYSTEM
2. HO2S sensor heater inspection
Turn the combination switch OFF.
Inspect the HO2S heater (page 5-108).
Is the HO2S heater normal?
YES
NO

FUEL PRESSURE RELIEVING

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.
• 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.
Remove the engine cover.
Set a wrench on the service check bolt [1] on the vapor
separator and place a shop towel or equivalent material
[2] over the service check bolt.
Loosen the service check bolt approximately one turn
slowly to relieve the fuel pressure.
After relieving the fuel pressure, remove the service
check bolt [1] and replace the sealing washer [2] with a
new one.
Install and tighten the service check bolt to the specified
torque.
TORQUE:
5-66
– Repair open in the main wire harness
between the ECM and HO2S. If main wire
harness is correct, replace the ECM with a
new one and recheck.
– Replace the HO2S with a new one and
recheck.
11.8 N·m (1.2 kgf·m, 9 lbf·ft)
[2]
[1]
[2]
[1]