Linhai ATV 500-D T3 EFI, Service Manual

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CHAPTER 3 ENGINE
LH500ATV-D T3 EFI SERVICE MANUA 19.0
CHAPTER 3 ENGINE PAGE. 3- 138
Bolt Tightening Torque: 3~4 Nm.
Fuel module is installed with special bolts (step bolts). Use designated bolts only.
Follow the tightening torque and tightening sequence instruction. Over torque and
miss-sequence can cause unequal compression of gasket and leakage.
Install the fuel tank to vehicle.
Connect for fuel hoses with suitable hose clamps.
Connect fuel module coupler
Follow “Fuel Leakage Check Procedure’ to check any leakage before the engine is
started.
3.6.2.8.10 Pressure Regulator Assembly Replacement:
Remove the regulator retainer from module.
Apply gradual pull force on retainer to avoid any personal injury due to spring action of
retainer.
Take out the pressure regulator assembly from module.
Do not hit/ damage on the regulator dome and crimping portion.
Lubricate the O-rings in new pressure regulator assembly with recommended
lubrication oils as mentioned in Table no: 3. Lubrication oil is applied only for ease of
regulator assembly.
Make sure that 2 O-rings (one is bigger diameter the other is smaller diameter) are
assembled in pressure regulator.
Place the pressure regulator on module at regulator pod. Push the regulator gently in
the pod.
Do not hit/ damage on the regulator dome and crimping portion. This will disturb the
pressure setting.
Assemble the retainer on the regulator pod
Replace the gasket, module with new gasket provided in the kit.
3.6.2.8.11 Fuel Pressure Relief Procedure:
Caution: This work must not be done when engine is hot. If done so, it may cause
adverse effect to catalyst (if equipped)
After making sure that engine is cold, relieve fuel pressure as follows.
Place vehicle gear in ‘Neutral’.
Disconnect fuel module electrical coupler from vehicle harness.
Start engine and run till it stops due to lack of fuel. Repeat ignition key ON and OFF
for 2 ~ 3 times of about 3 seconds each time to relieve fuel pressure in lines. Fuel
Connections are now safe for servicing.
Upon the completion of servicing, Connect Fuel Module Connector to Vehicle Harness
3.6.2.8.12 Fuel Leakage Check Procedure:
After performing any service on fuel system, check to make sure that there are no fuel
leakages as below.
Fill about 3 ~ 5 liters of fuel in tank.
Turn Ignition key to ON position for 3 seconds (to operate fuel pump) and then turn to