OPERATOR'S MANUAL

23TROUBLESHOOTING
ENGLISH
TROUBLESHOOTING
If the engine does not function properly, use the following chart to identify and correct the cause.
B When it is difficult to start the engine
B When output is insufficient
Cause Countermeasures
Fuel is thick and
doesn't flow.
*
*
*
Check the fuel tank and fuel filter.
Remove water, dirt and other
impurities.
As all fuel will be filtered by the filter, if
there should be water or other foreign
matters on the filter, clean the filter
with kerosene.
Air or water mixed
in fuel system
*
*
If air is in the fuel filter or injection
lines, the fuel pump will not work
properly. To attain proper fuel
injection pressure, check carefully for
loosened fuel line coupling, loose cap
nut, etc.
Loosen joint bolt stop fuel filter and air
vent screws of fuel injection pump to
eliminate all the air in the fuel system.
Thick carbon
deposits on orifice
of injection nozzle.
*
*
This is caused when water or dirt is
mixed in the fuel. Clean the nozzle
injection piece, being careful not to
damage the orifice.
Check to see if nozzle is working
properly or not. If not, install a new
nozzle.
Engine oil becomes
thick in cold
weather and engine
cranks slow.
* Change grade of oil according to the
weather (temperature.)
Battery is
discharged and the
engine will not
crank.
*
*
Charge battery.
In winter, always remove battery from
machine, charge fully and keep
indoors. Install in machine at time of
use.
Cause Countermeasures
Carbon stuck
around orifice of
nozzle piece
*
*
Clean orifice and needle valve, being
very careful not to damage the nozzle
orifice.
Check nozzle to see if good. If not,
replace with new parts.
Fuel is insufficient. * Check fuel system.
Overheating of
moving parts
*
*
*
Check lubricating oil system.
Check to see if lubricating oil filter is
working properly.
Filter element deposited with
impurities would cause poor
lubrication. Change element.
Air cleaner is dirty
* Clean the element every 100 hours of
operation.
Injection pump
wear
* Do not use poor quality fuel as it will
cause wear of the pump. Only use No.
2-D diesel fuel.
A If the cause of trouble can not be found, contact your KUBOTA dealer.