43
CC1031
Checking Fluid Levels
CAUTION
Mercury MerCruiser recommends that the crankcase oil be checked BEFORE starting the engine. If it
is necessary to check the oil level after starting the engine, stop engine and allow a minimum of 10
minutes for the oil to drain back into the oil pan.
CHECKING CRANKCASE OIL
IMPORTANT: Boat must be at rest in the water to obtain an accurate reading in the following procedure.
1 Check oil level before starting engine.
2 Remove dipstick. Wipe clean.
NOTE: 8.1L Models: Ensure that dipstick is installed with oil level indication marks facing the rear of the engine
(flywheel end).
3 Reinstall dipstick fully into dipstick tube. Wait 60 seconds to allow trapped air to vent.
4 Remove dipstick and observe oil level. Oil level must be between FULL or OK RANGE and ADD. If oil level
is below ADD:
5 Remove oil filler cap. Add specified oil to bring level up to, but not over, FULL or OK RANGE mark on dipstick.
IMPORTANT: DO NOT overfill crankcase oil.
CHECKING TRANSMISSION FLUID
IMPORTANT: Engine must be operated at 1500 rpm for 2 minutes immediately prior to checking level.
IMPORTANT: DO NOT screw dipstick in; press it firmly in and remove to obtain an accurate reading.
6 Velvet Drive Transmissions - Stop engine and quickly check fluid level by turning T-handle counterclockwise,
to remove dipstick. If fluid is below top (full) line, add specified fluid through dipstick hole. Do not overfill.
Reinstall dipstick securely.
CC1019
7 Hurth Transmissions - Stop engine and quickly remove dipstick to check level. If fluid is below top (full) line,
add specified fluid through dipstick hole. Do not overfill. Reinstall dipstick securely.
CB800
CHECKING ENGINE COOLANT
WARNING
Avoid serious injury from burns. Do not remove coolant cap when engine is hot. Coolant may dis-
charge violently.
8 Check coolant level in coolant reservoir. Add specified coolant as required.
9 If coolant is low, inspect gasket in cap for damage and replace if necessary.
10 Inspect coolant recovery system for leaks.