Maintenance
Changing Refer to the appropriate Mercury MerCruiser Sterndrive Service Manual.
ZF Marine Transmission Fluid Checking 1. Remove the dipstick. IMPORTANT: When checking the fluid level, rest the dipstick on top of the threaded housing hole. Do not screw the dipstick into the threaded housing hole. 2. Check the fluid level as indicated on the dipstick with the dipstick resting on the top of the threaded hole.
NOTE: The fluid level may be somewhat over the maximum mark, as some of the fluid from the transmission fluid cooler and hoses may have drained back into the transmission. 3. If the fluid level is low, add transmission fluid to bring the level up to the maximum mark on the dipstick.
a b
c d 16604
abcd-
Dipstick Threaded hole Maximum fluid level Minimum fluid level
IMPORTANT: To accurately check the fluid level, the engine must be operated at 1500 RPM for two minutes immediately before checking the level. 4. Start the engine and operate at 1500 RPM for two minutes to fill all the hydraulic circuits. 5. Stop the engine and quickly check the fluid level with the dipstick resting on the top of the threaded hole. 6. If the fluid level is low, add transmission fluid to bring the level up to the maximum mark on the dipstick. See Filling.
NOTE: If the transmission fluid level was extremely low, see Troubleshooting. 7. Install the dipstick.
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CMD-4082040 / 90-866941 NOVEMBER 2007