Yanmar engines LV series (L48V, L70V, L100V). Manual - part 16

ENGINE OPERATION

50

LV Operation Manual

3. If your engine speed control is similar to 

Figure 16:

(a) Turn the engine speed control knob 

(Figure 16, (1)) to the left (Figure 16, (2)).

(b) Slide the engine speed control knob in the 

direction shown to adjust the engine 
speed.

(c) Turn the engine speed control knob to the 

right (Figure 16, (3)) to tighten it.

Figure 16

SHUTTING DOWN THE ENGINE

Preparing To Stop Engine

Follow these steps to shut down the engine:

1. Disengage the PTO.

2. Set the engine speed control to its lowest 

setting.

3. Run the engine at low idle speed or run 

without load for at least five minutes before 
you shut it down.

Set Engine Speed Control to STOP

Several types of engine speed controls are 
used in LV engine applications. The following 
procedures are for three typical applications. 
Refer to the operating instructions for the 
driven machine.

1. If your engine speed control is similar to 

Figure 17 slide the engine speed control 
lever (Figure 17, (1)) to the STOP position 
(Figure 17, (2)).

(1)

(3)

(2)

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CAUTION

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.

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CAUTION

If the engine continues to run after you 
position the engine speed control to the 
STOP position, turn the fuel cock to the 
CLOSED position.

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ENGINE OPERATION

LV Operation Manual

51

Figure 17

2. If your engine speed control is similar to 

Figure 18 press the STOP button 
(Figure 18, (1)) and the engine speed control 
lever (Figure 18, (2)) will automatically return 
to the STOP position.

Note: The speed control lever is spring-

loaded so when you push down on the 
STOP button, the speed control lever 
moves back to the shut-off position. 
There is no idle position or 
intermediate speeds.

Figure 18

3. If your engine speed control is similar to 

Figure 19:

(a) Turn the engine speed control knob 

(Figure 19, (1)) to the left (Figure 19, (2)).

(b) Slide the engine speed control knob to the 

STOP position (Figure 19, (3)).

(c) Turn the engine speed control knob to the 

right (Figure 19, (4)) to tighten it.

Figure 19

Electric Start Models

Turn the key to the OFF position (Figure 20, (1)) 
and remove it from the key switch.

Figure 20

STOP

SLOW

RUN

(1)

(2)

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RUN

STOP

(1)

(2)

0001362A

(1)

(4)

(3)

(2)

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OFF

ON

S

TA
R

T

(1)

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ENGINE OPERATION

52

LV Operation Manual

After The Engine Stops

1. Move the fuel cock lever to the closed position 

(Figure 21, (1)).

Figure 21

2. Slowly pull the recoil starter handle out to the 

point of resistance (the point in the 
compression stroke where the intake and 
exhaust valves are closed). This helps to 
prevent rust while the engine is not in use.

3. If the engine will not be used for six months or 

longer, follow the additional instructions in 
Long Term Storage on page 89.

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(1)

LV Operation Manual

53

PERIODIC 

MAINTENANCE

LV Operation Manual

This section of the Operation Manual describes 
the procedures for proper care and maintenance 
of the engine.

CAUTION

NEVER permit anyone to operate the 
engine or driven machine without proper 
training.

• Read and understand this Operation 

Manual before you operate the 
machine to ensure that you follow safe 
operating practices and maintenance 
procedures.

• Machine safety signs and labels are 

additional reminders for safe operating 
and maintenance techniques.

• See your authorized Yanmar industrial 

engine dealer or distributor for 
additional training.

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A

 DANGER

EXPLOSION HAZARD!

• NEVER check the remaining battery 

charge by shorting out the terminals. 
This will result in a spark and may 
cause an explosion or fire. Use a 
hydrometer to check the remaining 
battery charge.

• If the electrolyte is frozen, slowly warm 

the battery before you recharge it.

• Failure to comply will result in death or 

serious injury.

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