Troubleshooting - Kubota D1703-M-E Operator's Manual

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 pressure, check carefully for
Air or water mixed
loosened fuel line coupling, loose cap
in fuel system
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.
* This is caused when water or dirt is
mixed in the fuel. Clean the nozzle
Thick carbon injection piece, being careful not to
deposits on orifice damage the orifice.
of injection nozzle. * Check to see if nozzle is working
properly or not. If not, install a new
nozzle.
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.
A If the cause of trouble can not be found, contact your KUBOTA dealer.
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Countermeasures
TROUBLESHOOTING
B When output is insufficient
Cause
* Clean orifice and needle valve, being
Carbon stuck very careful not to damage the nozzle
around orifice of orifice.
nozzle piece * Check nozzle to see if good. If not,
replace with new parts.
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.
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Countermeasures