ZF Marine Transmission Fluid
Check Fluid Level
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 below the minimum mark on the dipstick, add transmission fluid. Refer to Add Fluid.
a - Dipstick
b - Threaded hole
c - Maximum fluid level
d - Minimum fluid level
IMPORTANT: To accurately check the fluid level, operate the engine 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. Refer to Add
Fluid.
NOTE: If the transmission fluid level was extremely low, see your local Mercury Diesel authorized repair facility.
7. Install the dipstick.
Add Fluid
1. If necessary, add the specified automatic transmission fluid through the dipstick threaded hole to bring the level up to the
maximum mark on the dipstick.
IMPORTANT: Use only the specified automatic transmission fluid (ATF).
a - Dipstick
b - Threaded hole
c - Maximum fluid level
d - Minimum fluid level
NOTE: Always use the dipstick to determine the quantity of oil or fluid required.
NOTE: Capacities are for the transmission only and do not include the fluid cooler or fluid cooler hose capacities.
Section 4 - Maintenance
Page 38 90-8M0133568 eng JUNE 2017
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