Linhai ATV 500-D T3 EFI Service Manual page 171

CHAPTER 3 ENGINE
LH500ATV-D T3 EFI SERVICE MANUA 19.0
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.
  I nstall the fuel tank to vehicle.
  C onnect for fuel hoses with suitable hose clamps.
  C onnect fuel module coupler
  F ollow "Fuel Leakage Check Procedure' to check any leakage before the engine is
started.
3.6.2.8.10 Pressure Regulator Assembly Replacement:
  R emove the regulator retainer from module.
  A pply gradual pull force on retainer to avoid any personal injury due to spring action of
retainer.
  T ake out the pressure regulator assembly from module.
  D o not hit/ damage on the regulator dome and crimping portion.
  L ubricate 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.
  M ake sure that 2 O-rings (one is bigger diameter the other is smaller diameter) are
assembled in pressure regulator.
  P lace the pressure regulator on module at regulator pod. Push the regulator gently in
the pod.
  D o not hit/ damage on the regulator dome and crimping portion. This will disturb the
pressure setting.
  A ssemble the retainer on the regulator pod
  R eplace 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.
  P lace vehicle gear in 'Neutral'.
  D isconnect fuel module electrical coupler from vehicle harness.
  S tart 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.
  U pon 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.
  F ill about 3 ~ 5 liters of fuel in tank.
  T urn Ignition key to ON position for 3 seconds (to operate fuel pump) and then turn to
CHAPTER 3 ENGINE PAGE. 3- 138