39
Problem
Suspected cause
Action
En
g
in
e
d
o
e
s
n
o
t
s
ta
rt
.
Starter motor
runs but
engine does
not start.
1. Fuel is insufficient
2. Fuel filter is clogged
3. Water is interfused in fuel line
4. Air is interfused in fuel line
5. Poor piping connection to external fuel
tank
6. Fuel tank selector lever (3 way valve)
position is wrong
7. Fuel cut solenoid (motor) does not work
8. Fuel pump defective
1. Add fuel
2. Clean/Change fuel filter
3. Drain water in water
separator, fuel filter or fuel
tank
4. Extract the air
5. Check piping connection
6. Check lever (3 way valve)
7-1. Check/Change fuse
7-2. Check/Change fuel cut
Solenoid
8-1. Check/Change fuse
8-2. Check/Change fuel pump
<Ambient
temperature
falls down
below zero.>
1. Fuel is frozen
2. Water in fuel line is frozen
3. Pre-heater is defective
1. Use winterized fuel
2. Drain water in fuel line
3. Ask our distributor to repair
Engine starts but
stalls immediately.
1. Fuel filter is clogged
2. Water is interfused in fuel line
3. Air is interfused in fuel line
4. Poor piping connection to external fuel
tank
5. Air filter element is clogged
6. Lubricant oil is insufficient
7. Emergency operation/Fault detection
1. Clean/Change fuel filter
2. Drain water in water
separator, fuel filter or fuel
tank
3. Extract the air
4. Check piping connection
5. Check/Change air filter
element
6. Supply lubricant oil
7. Ask our distributor to repair
Engine oil pressure
is low.
1. Lubricant oil is insufficient
2. Oil filter is clogged
3. Oil Pressure switch is defective
4. Wrong oil is used
1. Supply lubricant oil
2. Change oil filter
3. Ask our distributor to repair
4. Change to proper kind and
viscosity oil
Overheated
1. Engine thermostat is defective
2. Water temp sensor is defective
3. Water temp meter is defective
4. Fan belt tension is weak
5. Coolant is insufficient
6.Radiator core is clogged
1. Ask our distributor to repair
2. Ask our distributor to repair
3. Ask our distributor to repair
4. Check/Adjust fan belt
5. Check/Supply coolant
6. Clean radiator core
Black smoke comes
out from muffler.
1. Air filter element is clogged
2. Fuel injection nozzle is defective
3. Improper fuel is used
1. Check/Change air filter
element
2. Ask our distributor to repair
3.Change to clean fuel
Summary of Contents for DG150MM
Page 2: ......
Page 44: ...41 13 Generator Circuit Diagram 1 400 440V...
Page 45: ...42 2 200 220V...
Page 46: ...43 14 Engine Electrical Circuit Diagram...
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