Kubota U50-5, Operating Instructions Manual

Page: 166 / 236

164
W9272-8135-1
05/2020
Troubleshooting
Troubleshooting: Operation
MALFUNCTION POSSIBLE CAUSE REPAIR
Insufficient engine power Air filter restricted Check, clean and replace the air
filter (page 190).
Fuel filter contaminated or water in
fuel system Check the water separator for water
content. Drain it (page 87) and
renew the fuel filter (page 191), if
necessary.
Fuel shortage Check the fuel level (page 89).
If necessary, refuel the machine
(page 147) and ventilate it
(page 149).
No pilot-controlled hydraulic
functions available. Fuse in fuse box is blown out Replace the fuses (page 150).
Control lever lock is raised Lower the control lever lock.
Power of hydraulic functions is too
low or disruptive. Hydraulic oil level too low Check the hydraulic oil level, add
hydraulic oil (page 86).
Suction filter restricted Change the suction filter in the
hydraulic oil tank (page 200).
Hydraulic hoses or connections are
leaking Must be replaced. Inform your
KUBOTA dealer.
Travel speed button does not work. Fuse in fuse box is blown out Replace the fuses (page 150).
Heater fan, wiper/washer system,
interior light, horn, working light not
operating. Fuse in fuse box is blown out Replace the fuses (page 150).
Indicator for the AUTO IDLE switch
lights up. Fuse in fuse box is blown out Replace the fuses (page 150).
Exhaust gas colour very black. Fuel quality is low Use fuel as indicated in the
“Operating materials” table
(page 180).
Engine oil level is too high Check engine oil level, drain engine
oil until it reaches specified level if
necessary (page 189).
Air filter restricted Check, clean and replace the air
filter (page 190).
The engine stops suddenly. Fuel shortage Check the fuel level (page 89).
If necessary, refuel the machine
(page 147) and ventilate it
(page 149).