Yanmar engines LV series (L48V, L70V, L100V). Manual - part 25

TROUBLESHOOTING

LV Operation Manual

87

TROUBLESHOOTING 
INFORMATION

If your engine does not operate properly, refer to 
the troubleshooting chart or consult your 
authorized Yanmar industrial engine dealer or 
distributor.

Supply the authorized Yanmar industrial engine 
dealer or distributor with the following information:

• Model name and serial number of your 

engine

• The driven machine type (tractor, generator, 

skid steer loader), manufacturers name, 
model and serial number

• How long the engine has been in service (the 

number of engine hours or the number of 
calendar months)

• Operating conditions when problem occurs:

‹

Engine rpm

‹

Color of exhaust smoke

‹

Type of diesel fuel

‹

Type of engine oil

‹

Any abnormal noises or vibration

‹

Operating environment such as high 
altitude or extreme ambient temperatures, 
etc.

• Engine maintenance history and previous 

problems

• Other factors that contribute to the problem

• White exhaust smoke

• Improper diesel fuel

• Replace with recommended 

diesel fuel

Diesel Fuel 

Specifications on 

page 29

• Faulty spray pattern of fuel 

injection

• See authorized Yanmar 

industrial engine dealer or 
distributor

—

• Fuel injection timing delay

—

• Engine burning oil

—

SYMPTOM

PROBABLE CAUSE

ACTION

REFER TO

TROUBLESHOOTING

88

LV Operation Manual

This Page Intentionally Left Blank

LV Operation Manual

89

LONG TERM 

STORAGE

LV Operation Manual

This section of the Operation Manual describes 
the procedures necessary to place the engine 
into long term storage (six months or longer) and 
how to place it back into operation.

BEFORE YOU PLACE THE 
ENGINE IN LONG TERM 
STORAGE

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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A

 WARNING

BURN HAZARD!

• Batteries contain sulfuric acid. NEVER 

allow battery fluid to come in contact 
with clothing, skin or eyes. Severe 
burns could result. ALWAYS wear 
safety goggles and protective clothing 
when servicing the battery. If contact 
with the skin and / or eyes should 
occur, flush with a large amount of 
water and obtain prompt medical 
treatment. 

• Failure to comply could result in death 

or serious injury.

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LONG TERM STORAGE

90

LV Operation Manual

1. Perform the next Periodic Maintenance 

procedure. For example, if there are 10 hours 
before the 200 hour maintenance, you should 
do the maintenance before you place the 
engine in storage. See the Periodic 
Maintenance Schedule on page 65.

2. Start the engine. Allow the engine to idle, or 

run without load if there is no idle position in 
your application, for approximately 3 minutes 
and then stop the engine.

3. L48V Engines Only - 

(a) Remove the oil plug (Figure 1, (1)).

Figure 1

(b) Add 2 cc of engine oil to the oil port 

(Figure 2, (1)).

Figure 2

(c) Reinstall the oil plug (Figure 1, (1)).

4. Drain the engine oil while the engine is still 

warm and fill with new oil. See Replace 
Engine Oil on page 74.

A

 CAUTION

FLYING OBJECT HAZARD!

• ALWAYS wear eye protection when 

servicing the engine and when using 
compressed air or high-pressure 
water. Dust, flying debris, compressed 
air, pressurized water or steam may 
injure your eyes. 

• Failure to comply may result in minor 

or moderate injury.

0000003en

CAUTION

Protect the air cleaner, turbocharger (if 
equipped) and electric components 
from damage when you use steam or 
use high-pressure water to clean the 
engine.

0000014en

(1)

0001581

(1)

0001580