Yanmar Lx490 - Page 157

17. TROUBLESHOOTING
17-6
Lx410/450/490 Operator's Manual
The engine is
consuming a lot of
fuel
1. A problem in the fuel 1. Fuel system
• Check whether the specification of
the fuel used is correct.
• use correct fuel specification
• Check whether the fuel system has a
leak.
• 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
2. A problem in the cooling 2. Cooling system
• Check whether the air intake for
radiator is clogged.
• clean the air intake for radiator
3. A problem in the lubrication 3. Lubricant system
• Check whether the engine oil
viscosity is high.
• replace engine oil with the specified
viscosity
4. A problem in the engine mechanical 4. Engine mechanical system
• Check whether the valve clearance is
correct.
• contact YOUR LOCAL YANMAR
TRACTOR DEALER
The oil pressure is
low
1. A problem in the lubrication 1. Lubrication system
• Check whether the engine oil level is
low.
• add engine oil
• Check whether the engine oil
viscosity is high.
• replace engine oil with the specified
viscosity
The engine is
consuming a lot of
engine oil
1. A problem in the lubrication 1. Lubrication system
• Check whether there is/are oil leak/s.
• contact YOUR LOCAL YANMAR
TRACTOR DEALER
2. A problem in the engine mechanical 2. Engine mechanical system
• Check whether the valve clearance is
correct.
• contact YOUR LOCAL YANMAR
TRACTOR DEALER
The problem is: The possible cause(s) are: Remedy: