Yanmar 4TNV98, Service Manual

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4TNV98 & 4TNE98 Diesel Engine Section 2. Periodic Maintenance 43
Periodic Maintenance Procedures
Daily
Perform the following procedures daily.
• Drain Fuel Filter / Water Separator
• Check Fuel Hoses and Engine Coolant Hoses
Drain Fuel Filter / Water Separator
DANGER
FIRE AND EXPLOSION HAZARD!
• Diesel fuel is extremely flammable and
explosive under certain conditions.
• When you remove any fuel system component
to perform maintenance (such as changing the
fuel filter) place an approved container under
the opening to catch the fuel.
• NEVER use a shop rag to catch the fuel. Vapors
from the rag are extremely flammable and
explosive.
• Wipe up any spills immediately.
• Wear eye protection. The fuel system is under
pressure and fuel could spray out when you
remove any fuel system component.
• Failure to comply will result in death or serious
injury.
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4TNE98 For D25S-5 Only
WARNING
HIGH PRESSURE HAZARD!
• Avoid skin contact with high pressure diesel
fuel spray caused by a fuel system leak such as
a broken fuel injection line. High pressure fuel
can penetrate your skin and result in serious
injury. If you are exposed to high pressure fuel
spray obtain prompt medical treatment.
• NEVER check for a fuel leak with your hands.
ALWAYS use a piece of wood or cardboard.
Have your authorized Yanmar industrial engine
dealer or distributor repair the damage.
• Failure to comply could result in death or
serious injury.
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CAUTION
If no water drips when the fuel filter/water
separator drain cock is opened, loosen the air
vent screw on the top of the fuel filter/water
separator by using a screwdriver to turn it
counterclockwise 2-3 turns.This may occur if the
fuel filter / water separator is positioned higher
than the fuel level in the fuel tank. After draining
the fuel filter/water separator, be sure to tighten
the air vent screw.
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