Doosan D20S-5 Operation & Maintenance Manual page 94

Operation Section
Problem
Difficult to Start
Probable Cause
Fuel container almost empty
Excess flow valve closed
Clogged fuel filter
Plugged fuel line
Faulty vapor connection between
the pressure regulator/converter
and the mixer
Pressure regulator/converter
malfunction
Fuel container almost empty
Air filter clogged
Incorrect air/fuel or ignition control
Engine Mechanical
Corrective Action
LPG Vapor from liquid outlet
Fill fuel container
Do not exceed 80% of liquid capacity
Reset excess flow valve
Close liquid valve
Wait for a "click" sound
Slowly open liquid valve
Repair/replace as required
See Maintenance Section, LP Fuel
Filter replacement
Remove obstruction from the fuel line
Close liquid fuel valve
Using caution, disconnect the fuel line
(some propane may escape)
Clear obstruction with compressed air
Re-connect fuel line
Slowly open liquid fuel valve
Leak test
Check connection
Verify no holes in hose
Clamps must be tight
Look
collapsed hose
Test pressure regulator/converter operation
See Engine Service Manual
LPG Vapor from liquid outlet
Fill fuel container
Do not exceed 80% of liquid capacity
Check air filter
Clean/replace as required
See Advanced Diagnostics
See Engine Service Manual
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for kinked, pinched and/or