Product Manual

Owner’s Manual for Mobile Generator 21
General Information
DEF Storage Guidelines
NOTE: Reference the Materials Safety Data Sheet
(MSDS) for additional information.
DEF freezes at temperatures below 12°F (-11°C). Do not
use additives to reduce the freezing temperature.
Additives currently available are more corrosive than
DEF, and will cause component and system degradation
and negatively impact reliability. For more information,
see the operator manual, or contact a DEF supplier.
DEF quality degrades rapidly at temperatures above
140°F (60°C). To maintain emissions compliance, the
urea concentration must remain between 31.8–33.2%.
Ideal conditions for storage of DEF are:
• Store at temperatures between
23–86°F (-5–30°C)
• Store in sealed dedicated containers to avoid
contamination and evaporation
Under these conditions, DEF is expected to remain
usable for a minimum of 18 months. Storing DEF at
higher temperatures can reduce its useful life by
approximately six months for every 9°F (5°C) above
86°F (30°C). Long-term storage in the DEF tank (over 12
months) is not recommended. If long-term storage is
necessary, test DEF prior to operating engine. See
Testing DEF.
DEF Tank Refilling
IMPORTANT NOTE: If DEF is filled into engine fuel
tank or other fluid compartment, do not operate
engine until system is properly purged of DEF.
Contact your John Deere dealer immediately to
determine how to clean and purge the system.
NOTE: Use only distilled water to rinse components that
are used to deliver DEF. Tap water can contaminate DEF.
If distilled water is not available, rinse with clean tap
water, then thoroughly rinse with ample amounts of DEF.
Reasonable care should be taken when refilling the DEF
tank. Verify the DEF tank cap area is free of debris before
removing the cap. Wipe clean with a lint free cloth to
remove debris from tank cap. Seal DEF containers
between use to prevent contamination and evaporation.
Avoid splashing DEF, and do not allow DEF to come into
contact with skin, eyes, or mouth.
DEF can be corrosive to materials such as steel, iron,
zinc, nickel, copper, aluminum, and magnesium. Use
suitable containers to transport and store DEF.
Containers made of polyethylene, polypropylene, or
stainless steel are recommended.
NOTE: Keep anything used to store or dispense DEF
clean of dirt and dust. Wash and rinse containers or
funnels thoroughly with distilled water to remove
contaminants.
If an unapproved fluid, such as diesel fluid or coolant is
added to the DEF tank, contact your John Deere
dealer immediately to determine how to clean and
purge the system.
If water has been added to the DEF tank, a tank cleaning
is necessary. After refilling the tank, check the DEF
concentration. See Testing DEF. The operator must
maintain appropriate DEF levels at all times. Check the
DEF level daily and refill the tank as needed. The filling
port is identified by a blue colored cap embossed with the
DEF symbol.
WARNING
Risk of poisoning. Do not ingest diesel exhaust fluid.
Seek medical attention immediately if consumed.
Failure to do so could result in serious injury.
(000334)
WARNING
Personal injury. Do not inhale diesel exhaust fluid fumes.
If breathing becomes difficult, move to an area with fresh
air and seek medical attention immediately. Failure to do
so could result in serious injury.
(000335a)
WARNING
Personal injury. Avoid contact with eyes. Flush eyes
thoroughly with water and seek medical attention
immediately. Failure to do so could result in serious
injury.
(000336)
WARNING
Personal injury. Avoid prolonged contact with skin. Wash
skin thoroughly with soap and water. Remove contaminated
clothing and wash before reuse. Seek medical attention if
skin becomes irritated. Failure to do so could result in
personal injury.
(000338a)
CAUTION
(000365)
Equipment Damage. Immediately clean any surfaces
with water that come in contact with diesel exhaust
fluid. Failure to do so could result in equipment
damage.