Linhai HY740STL 2018, Service Manual

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CHAPTER 2 MAINTENANCE
M750L SERVICE MANUA 18.0
CHAPTER 2 MAINTENANCE PAGE. 2- 8
FUEL LINES
Check fuel lines for signs of wear,
deterioration, damage or leakage. Replace if
necessary.
Be sure fuel lines are routed properly and
secured with cable ties.
CAUTION: Make sure lines are not kinked or
pinched.
Replace all fuel lines every two years.
FUEL FILTER
The fuel filter should be replaced in
accordance with the Periodic Maintenance
Chart or whenever sediment is visible in the
filter.
VENT LINES AND ROLL OVER VALVE*
1. Check fuel tank, oil tank, carburetor,
battery, and transmission vent lines for
signs of wear, deterioration, damage or
leakage. Replace every two years.
2. Be sure vent lines and drain lines are
routed properly toward the ground and
secured with cable ties.
CAUTION : Make
sure lines are not kinked or pinched
*NOTE. On some models, there is a
Roll-Over Valve on the end of the gas tank
vent line. Make sure the
↑
mark on the
R-O Valve is upwards.
Fuel Pump Module
Description and Working Principle
Fuel Pump Module supplies fuel to engine at
system pressure. Fuel Pump Module is
mounted to fuel tank at bottom and supplies
fuel to engine through hoses.
Fuel Pump module consists of Fuel Pump to
generate the fuel flow and pressure
regulator to regulate the fuel pressure.
Fuel Pump
When power is supplied to fuel pump, motor in
pump assembly rotates the impeller.
Impeller in turn draws the fuel from strainer and
pumps the flow to generate the system
pressure.