Troubleshooting; Engine Troubleshooting - Kubota B2650 Operator's Manual

TROUBLESHOOTING

ENGINE TROUBLESHOOTING

If something is wrong with the engine, refer to the table below for the cause and its corrective measure.
Trouble
Engine is difficult to start or
won't start.
Insufficient engine power.
Engine stops suddenly.
Black
Exhaust fumes are
colored.
Blue
white
Engine overheats
If you have any questions, consult your local KUBOTA Dealer.
Trouble
Engine not overheated, but
engine warning indicator on.
If you have any questions, consult your local KUBOTA Dealer.
Cause
A No fuel flow.
A Air or water is in the fuel system.
A In winter, oil viscosity increases,
and engine revolution is slow.
A Battery becomes weak and the
engine does not turn over quick
enough.
A Insufficient or dirty fuel.
A The air cleaner is clogged.
A Insufficient fuel.
A Fuel quality is poor.
A Too much oil.
A The air cleaner is clogged.
A The inside of exhaust muffler is
dumped with fuel.
A Injection nozzle trouble.
A Fuel quality is poor.
A Engine overloaded
A Low coolant level
A Loose or defective fan belt
A Dirty radiator core or grille screens A Remove all trash.
A Coolant flow route corroded
Stop the engine and get it restarted. If the engine fails to restart or the indicator stays on,
immediately contact your local KUBOTA dealer.
TROUBLESHOOTING
Countermeasure
A Check the fuel tank and the fuel filter.
Replace filter if necessary.
A Check to see if the fuel line coupler bolt and
nut are tight.
A Bleed the fuel system
(See "Bleeding Fuel System" in "SERVICE AS
REQUIRED" in
section.)
A Use oils of different viscosities, depending on
ambient temperatures.
A Use engine block heater. (Option)
A Clean battery cables & terminals.
A Charge the battery.
A In cold weather, always remove the battery
from the engine, charge and store it indoors.
Install it on the tractor only when the tractor is
going to be used.
A Check the fuel system.
A Clean or replace the element.
A Refuel.
A Bleed the fuel system if necessary.
A Change the fuel and fuel filter.
A Check the proper amount of oil.
A Clean or replace the element.
A Heat the muffler by applying load to the
engine.
A Check the injection nozzle.
A Change the fuel and fuel filter.
A Shift to lower gear or reduce load.
A Fill cooling system to the correct level;
check radiator
connections or leaks.
A Adjust or replace fan belt.
A Flush cooling system.
Operator's action
87
"PERIODIC SERVICE"
and hoses for loose