48
CA97
1
71925
71918
“SEE CAUTION”
CA474
Emissions (Europe Only)
CC899
The following information applies only to engines with a special emissions kit installed. If the kit has been
installed, your engine complies with SAV 1 Swiss Regulations.
CA398
Sealed Carburetor Mixture Screws
The carburetor on this engine has seals on the carburetor mixture screws. These seals prevent adjustment of
the fuel mixture settings.
CAUTION
Do not remove mixture screw seals and/or attempt to adjust fuel mixture setting. Tampering with the
mixture setting on this engine could affect the exhaust emissions level, thus voiding the emissions
certification. These seals should only be removed by an authorized dealer or emissions testing
agency.
CA99
Changing Positive Crankcase Ventilation Valve (PCV)
This engine is equipped with a positive crankcase ventilation valve (PCV). This valve should be changed every
100 hours of operation or at least once a year, whichever occurs first.
1 Remove PCV valve from port valve cover. Disconnect it from the hose and discard valve. Install new PCV
valve in valve cover and reconnect hose. Ensure valve is tightly seated in valve cover.
CA100
Emissions Testing
Your engine is equipped with special design features and special tuning to minimize the emission output from
the engine. You should follow:
• Recommended maintenance schedules particularly as to the ignition system.
• Proper engine tuning procedures to ensure these features remain in good operating order.
• Proper steps to maintain the engine within specifications.
Use only MerCruiser replacement parts to ensure compliance with emission regulations.
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