Yanmar Lx450 - Electrical System

17. TROUBLESHOOTING
17-8
Lx410/450/490 Operator's Manual
2. Electrical System
There is black smoke
coming from the
engine
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 air filter is
clogged.
• replace the air filter
• Check whether there is water in the
sediment bowl.
• remove the water and clean the
sediment bowl
• Check whether the fuel nozzles are
faulty.
• contact YOUR LOCAL YANMAR
TRACTOR DEALER
• Check whether the fuel injection
pump is out of timing.
• contact YOUR LOCAL YANMAR
TRACTOR DEALER
2. A problem in the cooling 2. Cooling system
• Check whether the air intake system
is clogged.
• clean the air intake system
3. A problem in the lubrication 3. Lubrication system
• Check whether the engine oil level is
correct.
• drain the engine oil to the specified
level
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 problem is: The possible cause(s) are: Remedy:
The alternator/battery
charging light
remains illuminated
even though the
engine is running
1. A problem in the charging system 1. Charging systems
• Check whether the alternator/fan belt
is loose or faulty.
• adjust or replace the alternator/fan
belt
• Check whether the fuse/s is/are
blown.
• replace the blown fuses
• Check whether the alternator is
faulty.
• contact YOUR LOCAL YANMAR
TRACTOR DEALER
2. A problem in the battery 2. Battery
• Check whether the battery is faulty.
• replace the battery
3. A problem in the engine mechanical 3. Engine mechanical system
• Check whether the engine idle speed
is too low.
• adjust engine idle speed
The problem is: The possible cause(s) are: Remedy: