Kubota L4701, Operator'S Manual

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• Do not pour waste onto the ground, down a
drain, or into any water source.
• Also, follow the relevant environmental
protection regulations when disposing of
antifreeze.
Always use a 50/50 mix of long-life coolant and clean
soft water in KUBOTA engines.
Consult your local KUBOTA Dealer concerning coolant
for extreme conditions.
NOTE :
• The following data represent industry standards
that necessitate a minimum glycol content in
the concentrated antifreeze.
• Long-life coolant (LLC) comes in several types. Use
ethylene glycol (EG) type for this engine.
• Before employing LLC-mixed cooling water, fill the
radiator with fresh water and empty it again. Repeat
filling and emptying the radiator with fresh water 2
or 3 times to clean up the inside.
• Mixing the LLC
Premix 50% LLC with 50% clean soft water. When
mixing, stir it up well, and then fill into the radiator.
• The procedure for the mixing of water and
antifreeze differs according to the type of the
antifreeze and the ambient temperature. Refer to
SAE J1034 standard, more specifically also to SAE
J814c.
Vol (%)
Antifreeze
Freezing Point Boiling Point
*1
℃
(
℉
)
℃
(
℉
)
50
-37
(-34)
108
(226)
• Adding the LLC
– Add only water if the mixture reduces in amount
by evaporation.
– If there is a mixture leak, add the LLC of the
same manufacturer and type in the same
mixture percentage.
– Never add any long-life coolant of different
manufacturer. Different brands may contain
different additive components, and the engine
may fail to perform as specified.
• When the LLC is mixed, do not employ any
radiator-cleaning-agent. The LLC contains
anticorrosive agent. If mixed with the cleaning
agent, sludge may build up, adversely affecting the
engine parts.
• Service life of KUBOTA's genuine long-life coolant
is 2 years. Be sure to change the coolant every
2000 hours or every 2 years whichever comes
faster.
*1 At 1.013×10
5
Pa (760 mmHg) pressure (atmospheric). A
higher boiling point is obtained by using a radiator-pressure-
cap which permits the development of pressure within the
cooling system.
SERVICE EVERY 3000 HOURS
1. Checking the supply pump
• Consult your local KUBOTA Dealer for checking the
supply pump
2. Checking and cleaning the EGR
system
• Consult your local KUBOTA Dealer for checking
and cleaning the EGR system.
3. Cleaning the DPF muffler
Removal of ash
The longer the DPF operates, the more ash (burnt
residue) is collected in the filter. Too much ash build-up
adversely affects the DPF performance.
• Consult your local KUBOTA Dealer to clean the
filter.
IMPORTANT :
– The DPF needs to be cleaned with a specific
cleaning device. Do not disassemble the
DPF for cleaning or attempt to clean it
yourself. Consult your local KUBOTA Dealer.
SERVICE EVERY 1 YEAR
1. Checking the fuel line
WARNING
To avoid personal injury or death:
• Be sure to stop the engine and remove the
starter key before changing the fuel line.
• Check the fuel lines periodically. The fuel lines
are subject to wear and aging. Fuel may leak
out onto the running engine, causing a fire.
1. Check to see that all lines and hose clamps are
tight and not damaged.
SERVICE EVERY 3000 HOURS PERIODIC SERVICE
L4701
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