G420E/G424E
Tier
LP Engine
Maintenance Schedule
35
Maintenance Schedule
Interval Hours
CHECK POINT
Daily
Every
250hrs or
a month
Every
500
Hours or
3 months
Every
1000
Hours or
6 months
Every
1500
Hours or
9 months
Every
2600
Hours or
15 months
Every
4500
Hours or
2 years
General Maintenance Section
Test Fuel System for Leaks
Prior to any service or maintenance activity
Inspect engine for fluid leaks
X
Inspect all vacuum lines and
fittings
X
Inspect electrical system- check
for loose, dirty, or damaged wires
and connections
X
Inspect all fuel fittings and hoses
X
Inspect Acceleration Pedal travel
and operation
X
Engine Coolant Section
Check Coolant Level
X
Inspect coolant hoses and fittings
for leaks, cracks, swelling, or
deterioration
X
Engine Ignition Section
Inspect battery for damage and
corroded cables
X
Inspect ignition system
X
Replace spark plugs
X
Fuel Lock-Off/Filter Section
Replace LP fuel filter element
X
Inspect lock-off and fuel filter for
leaks
X
Ensure lock-off stops fuel flow
when engine is off
X
Pressure Regulator/Converter Section
Test regulator pressures
X
Inspect pressure regulator vapor
hose for deposit build-up
X
Inspect regulator assembly for
fuel/coolant leaks
X
Fuel Trim Valve Section
Inspect valve housing for wear,
cracks or deterioration
X
Ensure valve seals in the closed
position when the engine is off
X
