Kubota XN12-8 Operation Manual page 161

Troubleshooting
Other Symptoms
Problem
Can't turn or turn inflexibly
The hydraulic oil
temperature is too high
The starter motor rotates
but the engine does not
start
Tracks fall off
The engine emits black
smoke from time to time
Engine exhausts white or
blue smoke
The engine produces
irregular noise
(combustion or
mechanical noise)
Cause
l Insufficient grease for
slewing support
l Hydraulic oil level is too
low
l Insufficient fuel
l There is air in the fuel
system
l Water in the fuel system
l Tracks are too loose
l Air filter is clogged
l Too much oil
l Inferior fuel
l Inferior fuel is being used
l overheat of engine
l Internal damage of exhaust
pipe
6-11
Solutions
l Lubricate the bearings
Please refer to page 5-23
l Add to the
specified liquid
level. Please refer
to page 5-17
l Add fuel. Please refer to
page 5-16.
l Exclude air. Please refer to
pages 6-8.
l Drain the water. Please refer
to pages 5-24.
l Increase the tension. Please
refer to page 5-21。
l Clean the air filter. Please
refer to pages 5-27。
l Adjust to the
specified liquid
level. Please refer
to page 5-16.
l Change the fuel.
l Replace the fuel
For details, please refer to
"If the Engine Overheats" on
page 6-3.
l Replace the exhaust pipe.
For replacement matters,
please consult your sales or
service agent。