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Problem Possible faults Corrective actions
1. Lamp H2 does not light up when
turning the start switch (S1) to position
1.
a. Discharged or defective battery.
b. Loose battery cable(s) or oxidised terminals.
c. Loose connection or damaged wiring.
d. Start switch (S1) defective.
e. Circuit breaker (F1) defective.
a. Check electrolyte level and charge battery. If no cells are
shorted and battery is discharged, trace cause and correct.
b. Check and correct if necessary.
c. Check wiring and connections; correct if necessary.
d. With (S1) switched in ”I”, check voltage between earth
and each of the terminals of (S1) respectively. Voltage
must register at each of the terminals; if not, replace (S1).
e. Replace circuit breaker.
2. General alarm lamp (H1) does not
light up when turning the start switch
(S1) to position 2.
a. Lamp (H2) blown.
b. Alternator (A)/regulator defective.
a. Replace lamp.
b. Disconnect the wire from alternator terminal D+ and
connect it to terminal D–. If (H1) lights up, replace the
alternator; if not, test (S1); see remedy 1d.
3. Engine does not start after turning (S1)
to position 1.
a. Low battery output.
b. Circuit breaker button (F1) not pressed.
c. Loose or damaged electric wiring.
d. Fuel tank empty.
e. Start switch (S1) defective.
f. Starter motor defective.
a. See remedy 1a.
b. Press circuit breaker button.
c. Repair electric wiring.
d. Refuel and prime fuel pump.
e. Repair (S1).
f. Repair starter motor.
4. Starter motor cranks engine when
turning start switch (S1) to position 3,
but engine does not fire.
a. Start switch (S1) defective.
b. Fuel solenoid (Y1) defective.
c. Low battery output.
a. See remedy 1d.
b. Check solenoid and its valve, correct or replace if
necessary.
c. See 1a.
5. Engine is running, but shuts down
immediately after the start switch (S1)
has been released.
a. Start switch (S1) released too soon.
b. Insufficient engine oil pressure.
c. Fuel tank contains insufficient fuel.
a. Release button after engine oil pressure has built up above
the minimum allowed value.
b. Stop at once, consult the Engine Operation Manual.
c. Fill fuel tank.
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