GENERAL SERVICE INFORMATION
3TNV88F Service Manual
4-13
Diesel Fuel
Approved fuel
In case of using biodiesel (only concentrations up
to B 20) such fuel should comply with the below
recommended standards. However, raw pressed
vegetable oils are not considered to be biodiesel
and are not acceptable for use as fuel in any
concentration in YANMAR engines.
1. EN14214 (European standard) and/or ASTM D-
6751 (American standard).
2. All applicable engines can be operated with
biodiesel fuel up to B 20 (20 % bio-fuel blend)
as a maximum concentration.
(For your information: In Japan, the legally
allowed maximum concentration for on-road
applications is B 5.)
Conditions for the operation with biodiesel
(B 8 through B 20)
When operating your applicable YANMAR engine
with biodiesel blends concentrated above B 5, we
seriously recommend observing the following
operation, service and maintenance conditions:
1. The original service interval of the below stated
services as indicated in the respective
YANMAR engine standard operation manual,
the application manual and the service manual
should be halved (please refer to your own
manuals for the each service interval):
• Replacement interval of engine oil filter, engine
oil and the fuel filter.
• Cleaning interval of the water separator
• Drain interval of the fuel tank.
2. It is required to inspect, clean and adjust the
fuel injector every 1000 operating hours.
3. Replacement of the following parts before using
the recommended biodiesel:
• Fuel hose
• If not already installed, a water separator
needs to be built in
• O-ring of fuel filter
• O-ring of water separator
Please refer to the attached list of exchange
parts for details.
4. Please use only biodiesel fuel that is
appropriate to the intended operation
environment of the engines. This especially
applies if the operating ambient temperature
falls below 0 degree centigrade.
5. Operation with biodiesel requires daily
maintenance as follows:
• Please daily check the engine oil level. If the oil
level rises above the oil level of the previous
day, the engine oil needs to be immediately
replaced.
• Please daily check the water level of the water
separator. If the water level rises above the
“max” indicator, an immediate drain of the
water separator is required.
6. Biodiesel blends up to B 20 can only be used
for a limited time of up to 3 months of the date
of biodiesel manufacture. Therefore biodiesel
needs to be used at latest within 2 months from
the time of filling the tank or within 3 months
from the time of production by the fuel supplier,
whichever comes first.
7. Before a long-term storage without operating
the engine, the biodiesel needs to be drained
out completely and the engine has to be run for
5 hours with conventional diesel fuel as
indicated in your operation manual.
3TNV88F_SVM_A4.book 13 ページ ２０１２年７月２６日 木曜日 午後６時４分
