jcb JS300 Service Manual page 363

If any emission related part on your engine is defective, the part will be repaired or replaced by Isuzu Motors
America LLC.
Owner's Warranty Responsibilities
• As the off road compression ignition engine owner, you are responsible for the performance of the required
maintenance listed in your owner's manual. Isuzu Motors America LLC recommends that you retain all
receipts covering maintenance on your off road compression ignition engine, but Isuzu Motors America
LLC cannot deny warranty solely for the lack of receipts or for your failure to make sure the performance
of all scheduled maintenance.
• As the off road compression ignition engine owner, you should however be aware that Isuzu Motors
America LLC may deny your warranty coverage if your off road compression ignition engine or a part has
failed due to abuse, neglect, improper maintenance or unapproved modifications.
• Your engine is designed to operate on diesel fuel only. Use of any other fuel may result in your engine no
longer operating in compliance with California's emissions requirements.
• You are responsible for initiating the warranty process. The CARB suggests that you present your off road
compression ignition engine to an Isuzu Motors America LLC dealer as soon as a problem exists. The
warranty repairs should be completed by the dealer as expeditiously as possible.
If you have any questions regarding your warranty rights and responsibilities, you should contact the:
Isuzu Motors America LLC., PowerTrain Division, 4640 I Commerce Center Drive Plymouth, MI 48170, Tel:
734-582-9470.
Maintenance Recommendation
Some Isuzu Motors America LLC off road engines are certified by the United States EPA and CARB to comply
with smoke and gaseous emission standards prescribed by Federal laws at the time of maintenance.
The engine is certified if it has a special certification label. An Isuzu engine dealer can also inform you if the
engine is certified.
Efficiency of emission control and engine performance depends on adherence to proper operation and
maintenance recommendations and use of recommended fuels and lubricating oils. It is recommended that
major adjustments and repair be made by your authorized Isuzu engine dealer.
Various chemical fuel additives, which claim to reduce visible smoke, are available commercially. Although
additives have been used by individuals to solve some isolated smoke problems in the field, they are not
recommended for general use.
Federal smoke regulations require that engines be certified without smoke depressants.
The corrective step taken immediately on discovery of worn parts, which may affect emission levels, will help
assure proper operation of emission control systems. The use of genuine Isuzu parts recommended. Suppliers
of non Isuzu parts must assure the owner that the use of such parts will not adversely affect emission levels.
Regular maintenance intervals, along with special emphasis on the following items, are necessary to keep
exhaust emissions within acceptable limit for the useful life of the engine.
Refer to the maintenance intervals. If the engine is operating under severe conditions, adjust the maintenance
schedule accordingly. See your authorized Isuzu engine dealer to help analyse your specific application,
operating environment and maintenance schedule adjustments.
The following is an explanation of maintenance for emission related components. See the
Maintenance > Maintenance Schedules (Page 177).
Fuel Injection Pump Or Nozzles
Fuel injection pumps or nozzles are subject to tip wear as a result to fuel contamination. This damage can
cause an increase in fuel consumption, the engine to emit black smoke misfire or run rough.
Inspect, test, and replace if necessary. Fuel injection pumps can be tested by an authorized Isuzu engine dealer.
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Technical Data
Warranty Information
Refer to:
288