Cub Cadet 997 - Manual (Page 26)

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A sealed-type crankcase emission control system is
also used to eliminate blow-by gasses. The blow-by
gasses are led to a breather chamber through the
crankcase and from there to the air cleaner.
Engine Emissions Compliance Period
California
Model Year - 2006 and later Vertical Crankshaft
Durability Period - 500 hours
All Other States
Model Year - 2003 and later (new)
2007 and later (carry over)
Durability Period - 500 hours (Category A}
If your engine has an assigned emissions durability
period it will be located on the certification label
attached to the engine (IMPORTANT ENGINE
INFORMATION).
High Altitude Performance Adjustment Information
To improve the EMISSIONS CONTROL
PERFORMANCE of engines operated above 1,000
meters (3,300 feet), Kawasaki recommends the
following Environmental Protection Agency (EPA) and
the California Air Resources Board (CARB) approved
modifications.
NOTE: When properly performed, these specified
modifications only are not considered to be emissions
system "tampering" and engine performance is
generally unchanged as a result.
Installation Instructions:
High altitude adjustment requires replacement of
carburetor main jet. Installation of these optional parts
may be performed by an authorized Kawasaki dealer,
or the consumer, following repair recommendations
specified in the appropriate Kawasaki Service Bulletin.
Maintenance and Warranty
Proper maintenance is necessary to ensure that your
engine will continue to have low emission levels. This
Owner's Manual contains those maintenance
recommendations for your engine. Those items
identified by the Periodic Maintenance Chart are
necessary to ensure compliance with the applicable
standards.
As the owner of the engine, you have the responsibility
to make sure that the recommended maintenance is
carried out according to the instructions in this Owner's
Manual at your own expense.
The Kawasaki Limited Emission Control System
Warranty requires that you return your engine to an
authorized Kawasaki dealer for remedy under warranty.
Please read the warranty carefully, and keep it valid by
complying with the owner's obligations it contains.
Tampering with Emission Control System Prohibited
Federal law and California State law prohibit the
following acts or the causing thereof: (1) the removal or
rendering inoperative by any person other than for
purposes of maintenance, repair, or replacement, of
any device or element of design incorporated into any
new engine for the purposes of emission control prior to
its sale or delivery to the ultimate purchaser or while it is
in use, or (2) the use of the engine after such device or
element of design has been removed or rendered
inoperative by any person.
Among those acts presumed to constitute tampering
are the acts listed below:
Do not tamper with the original emission related parts:
• Carburetor and internal parts
• Spark Plug
• Magneto or electronic ignition system
• Fuel filter element
• Air cleaner elements
• Crankcase
• Cylinder head
• Breather chamber and internal parts
• Intake pipe and tube