Yanmar 4JH45 Especificações descarregar pdf (Página 58)

ENGINE OPERATION

52 JH Series Operation Manual

NOTICE

Racing the engine: With the gear in

NEUTRAL, accelerate from the

low-speed position to the high-speed

position and repeat this process about

five times. This is done to clean out

carbon from the cylinders and the fuel

injection valve. Neglecting to race the

engine will result in poor smoke color

and reduce engine performance.

• If possible, periodically operate the

engine at near maximum engine speed

while underway. This will generate

higher exhaust temperatures, which will

help clean out hard carbon deposits,

maintaining engine performance and

prolonging the life of the engine.

NOTICE

Never turn off the battery switch (if

equipped) or short the battery cables

during operation. Damage to the electric

system will result.

SHUTTING DOWN THE

ENGINE

Normal Shutdown

1. Reduce engine speed to low idle and

put remote control handle in NEUTRAL.

2. Accelerate from low speed to high

speed and repeat five times. This will

clean out the carbon from the cylinders

and the fuel injection nozzles.

3. Allow engine to run at low speed

(approximately 1000 min

-1

) without

load for 5 minutes.

NOTICE

For maximum engine life, Yanmar

recommends that when shutting the

engine down, you allow the engine to

idle, without load, for 5 minutes. This will

allow the engine components that

operate at high temperatures, such as

the turbocharger (if equipped) and

exhaust system, to cool slightly before

the engine itself is shut down.

Figure 4

4. Push and hold the stop switch.

After the engine has stopped, push the

power switch off.

Start switch

Stop switch

Power switch

042590-01EN01

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