SA221/324/424 Operation Manual
The engine has
overheated
1. A problem in the cooling
1. Cooling system
• Check whether the air intake system
is clogged.
• clean the air intake system
• Check whether the coolant level is
low.
• add coolant
• Check whether the grille, radiator
screen or radiator cooling fins are
dirty.
• clean the radiator grille, radiator
screen and radiator fins
• Check whether the cooling system
needs flushing.
• flush the cooling system
• Check whether radiator cap and
thermostat is/are faulty.
• contact YOUR LOCAL YANMAR
TRACTOR DEALER
2. A problem in the engine mechanical
2. Engine mechanical system
• Check whether the alternator/fan belt
is loose or faulty.
• adjust or replace the alternator/fan
belt
There is a knocking
sound 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 there is water in the
sediment bowl.
• remove the water and clean the
sediment bowl
• 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 coolant
temperature is too low.
• contact YOUR LOCAL YANMAR
TRACTOR DEALER
• Check whether the engine is
overheating.
• contact YOUR LOCAL YANMAR
TRACTOR DEALER
3. A problem in the lubrication
3. Lubricant system
• Check whether the engine oil level is
low.
• add engine oil
• Check whether the engine oil
viscosity is low.
• 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 problem is:
The possible cause(s) are:
Remedy:
SA221_324_424_OperatorsManual.book 5 ページ 2018年6月4日 月曜日 午後5時19分
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