Section 5 - Maintenance
Page 48 90-899883179 OCTOBER 2007
Sealed Carburetor Mixture Screw
IMPORTANT: Changing the mixture setting on this engine can affect the exhaust emissions
level and void the emissions certification. Do not adjust or remove the mixture settings or
remove the mixture screw seals. See your authorized Mercury dealer or emissions testing
agency.
Engine Oil
NOTICE
Discharge of oil, coolant, or other engine/drive fluids into the environment is restricted by
law. Use caution not to spill oil, coolant, or other fluids into the environment when using
or servicing your boat. Be aware of the local restrictions governing the disposal or
recycling of waste, and contain and dispose of fluids as required.
Checking
1. Stop the engine. Allow approximately 5 minutes for the oil to drain into the oil pan. The
boat must be at rest in the water.
2. Remove the dipstick. Wipe clean and reinstall fully into the dipstick tube. Wait 60
seconds to allow trapped air to vent.
NOTE: Ensure that dipstick is installed with oil level indication marks facing the rear of the
engine (flywheel end).
a
a - Dipstick tube
IMPORTANT: Add the specified engine oil to bring the level up to, but not over, the full or
OK range mark on the dipstick.
3. Remove the dipstick and observe the oil level. Oil level must be between full or OK
range and add. Reinstall dipstick into dipstick tube.
Filling
IMPORTANT: Do not overfill the engine with oil.
IMPORTANT: Always use the dipstick to determine the exact quantity of oil or fluid required.
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