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22
TROUBLESHOOTING
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
Cause
*
Check the fuel tank and fuel filter.
*
Remove water, dirt and other
impurities.
Fuel is thick and
*
As all fuel will be filtered by the filter, if
doesn't flow.
there should be water or other foreign
matters on the filter, clean the filter
with kerosene.
*
If air is in the fuel filter or injection
lines, the fuel pump will not work
properly.
*
To attain proper fuel injection
Air or water mixed
pressure, check carefully for loosened
in fuel system
fuel line coupling, loose cap nut, etc.
*
Loosen air vent screws stop fuel filter
and fuel injection pump to eliminate all
the air in the fuel system.
Engine oil becomes
thick in cold
* Change grade of oil according to the
weather and engine
weather (temperature.)
cranks slow.
*
Charge battery.
Battery is
*
In winter, always remove battery from
discharged and the
machine, charge fully and keep
engine will not
indoors. Install in machine at time of
crank.
use.
B When output is insufficient
Cause
Fuel is insufficient.
* Check fuel system.
*
Check lubricating oil system.
*
Check to see if lubricating oil filter is
Overheating of
working properly.
moving parts
*
Filter element deposited with
impurities would cause poor
lubrication. Change element.
* Clean the element every 100 hours of
Air cleaner is dirty
operation.
* Do not use poor quality fuel as it will
Injection pump
cause wear of the pump. Only use No.
wear
2-D diesel fuel. (See "FUEL" in
"PERIODIC SERVICE" section.)
A If the cause of trouble can not be found, contact your KUBOTA dealer.
Countermeasures
Countermeasures
B When engine suddenly stops
Cause
*
Check the fuel tank and refill the fuel, if
necessary.
Lack of fuel
*
Also check the fuel system for air or
leaks.
* If necessary, replace with a new
Bad nozzle
nozzle.
Moving parts are
*
Check amount of engine oil with oil
overheated due to
level gauge.
shortage of
*
Check lubricating oil system.
lubrication oil or
*
At every 2 times of oil change, oil filter
improper
cartridge should be replaced.
lubrication.
B When color of exhaust is especially bad
Cause
Fuel is of extremely
* Select good quality fuel.
poor quality.
Use No. 2-D diesel fuel only.
Nozzle is bad.
* If necessary, replace with new nozzle.
B When engine must be stopped immediately
Cause
Color of exhaust
* Check the fuel injection system,
suddenly turns
especially the fuel injection nozzle.
dark.
Bearing parts are
* Check the lubricating system.
overheated.
*
Check the lubricating system.
*
Check the function of the relieve valve
Oil lamp lights up
in the lubricating system.
during operation.
*
Check pressure switch.
*
Check filter base gasket.
Countermeasures
Countermeasures
Countermeasures
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