Operating instructions

5.2 Troubleshooting
Engine does not turn when starter is actuated
Component Cause Action
Battery Low or faulty Charge or replace (see manufacturer's
documentation).
Cable connections faulty Check if cable connections are proper‐
ly secured (see manufacturer's docu‐
mentation).
Starter Engine cabling or starter faulty Check cable connections for secure
seating ; contact Service.
Engine wiring Faulty Check (→ Page 106).
Engine governor Plug-in connections possibly loose Check plug-in connections
(→ Page 105).
Engine Running gear blocked (engine cannot
be barred manually)
Contact Service.
Engine turns but does not fire
Component Cause Action
Starter Poor rotation by starter: Battery low or
faulty
Charge or replace battery (see manu‐
facturer's documentation).
Engine wiring Faulty Check (→ Page 105).
Fuel system Air in fuel system, if fault occurs after
filling the system.
Vent fuel system (→ Page 56).
Engine governor Faulty Contact Service.
Engine fires unevenly
Component Cause Action
Fuel injection equip‐
ment
Injector faulty Replace (→ Page 48).
Engine wiring Faulty Check (→ Page 106).
Fuel system Air in fuel system, if fault occurs after
filling the system.
Vent fuel system (→ Page 56).
Engine governor Faulty Contact Service.
Engine does not reach rated speed
Component Cause Action
Fuel supply Fuel prefilter (if fitted) clogged. Clean filter element (see manufactur‐
er's documentation).
Fuel filter clogged Replace (→ Page 58).
Air supply Air filter clogged Replace air filter (→ Page 65).
Fuel injection equip‐
ment
Injector faulty Replace (→ Page 48).
Engine wiring Faulty Check (→ Page 106).
Engine Overloaded Contact Service.
38 | Troubleshooting | MS150095/01E 2012-08
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