Yanmar Lx410 Operator's Manual page 153

The problem is:
17. TROUBLESHOOTING
The possible cause(s) are:
2. A problem in the fuel
3. A problem in the cooling
4. A problem in the lubrication
5. A problem in the engine mechanical
Remedy:
2. Fuel system
• Check whether the fuel shut-off valve
is OFF (closed) position.
• turn the fuel shut-off valve to ON
(open) position
• Check whether the fuel level is
sufficient.
• add specified fuel
• Check whether the specification of
the fuel used is correct.
• use the correct fuel specification
• Check whether there is water in the
sediment bowl.
• remove the water and clean the
sediment bowl
• Check whether the fuel filter is
clogged.
• replace the fuel filter
• Check whether air is present in the
fuel system.
• bleed air from the fuel system
• Check whether there is leak or bent
in the fuel line.
• contact YOUR LOCAL YANMAR
TRACTOR DEALER
• Check whether the fuel injection
pump is out of timing.
• contact YOUR LOCAL YANMAR
TRACTOR DEALER
• Check whether the fuel nozzles are
faulty.
• contact YOUR LOCAL YANMAR
TRACTOR DEALER
3. Cooling system
• Check whether the air intake system
is clogged.
• clean the air intake system
4. Lubrication system
• Check whether the engine oil
viscosity is high.
• replace engine oil with the specified
viscosity
• Check whether the crankcase
ventilation tube is clogged.
• clean the crankcase ventilation
tube
5. Engine mechanical system
• Check whether the engine idle speed
is too low.
• adjust engine idle speed
• Check whether the valve clearance is
correct.
• contact YOUR LOCAL YANMAR
TRACTOR DEALER
17-2
Lx410/450/490 Operator's Manual