Hitachi ZAXIS 30U-5N Operator's Manual page 290

Impossible to Start the Engine
Problem
Engine will not start. Starter does not
rotate or is not
powerful.
Starter rotates.
Even though the engine is started, the
engine stalls soon.
Engine runs irregularly.
TROUBLESHOOTING
Cause
Discharged battery
Disconnected, loose, or corroded battery
terminals
Lowered pilot control shut-off lever
Disconnected, loose, or corroded starter
ground line terminals
Faulty pilot control shut-off lever electrical
system
Too high engine oil viscosity
Faulty starter and/or electrical system
No fuel
Faulty injection pump
Air in the fuel system
Clogged fuel filter
Frozen fuel
Faulty preheat system
Too low idle speed
Clogged fuel filter
Clogged pre-fuel filter (ZX50U-5N,
ZX60USB-5N)
Faulty engine control system
Clogged air cleaner
Faulty injection pump
Faulty fuel system
Water or air in the fuel system
Faulty engine control system
11-2
Charge or replace battery.
After repairing the corroded
area, securely tighten the
connectors.
Pull pilot control shut-off lever
up.
After repairing the corroded
area, securely tighten the
connectors.
Repair
Change engine oil with
appropriate viscosity.
* Repair and adjust
After checking that no fuel is
leaking, refill fuel.
* Repair and adjust
Bleed air.
After draining water, replace
the element.
Warm the fuel pump with
hot water or wait until the
atmospheric temperature rises.
* Repair and adjust
* Repair and adjust
After draining water, replace
the element.
Clean or replace the element.
* Repair and adjust
Clean or replace the element.
* Repair and adjust
* Repair and adjust
Drain water or bleed air.
* Repair and adjust
* Mark: Consult your authorized Hitachi dealer.
Solution