ENGINE DIVISION SERVICE MANUAL
Emission Certification Label
The engine exhaust emission control information
label attached to the engine valve cover is very valuable
to the tune-up technician. It gives him ready information:
engine model, cubic inch displacement, timing, idle
speeds and idle mixture settings.
Tuning IH Engines Equipped with Emission Controls
Tune-up on engines with emission controls is
performed in the conventional manner. It is extremely
important that the IH tune-up specifications found in this
manual be used. It is necessary to become completely
familiar with all types of emission controls, how they
operate and how they are serviced.
Using the recommended specifications and procedures
will provide good performance in idling characteristics as
well as allow the engine to operate within government
Owners have the responsibility to see that their
engine is properly maintained on a regular schedule, or at
any hint of an engine malfunction . The service technician
has the responsibility to obtain the knowledge and skills
completely and without fault.
Emission Control Tune-Up Specifications
The following tune-up specifications cover Canada
and U.S.A. engines.
These specifications should be used in conjunction
with the scheduled maintenance intervals and the
explanation of each maintenance step given on the
CGES-215 Page 57
PRINTED IN UNITED STATES OF AMERICA