Add Fluid; Change Fluid - Mercury 4.2 Diesel Operation & Maintenance Manual

Section 4 - Maintenance
3.
If the fluid level is below the minimum mark on the dipstick, add transmission fluid. Refer to Add Fluid.
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).
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.
Model
ZF Marine 63A
ZF Marine 63IV
2. Install the dipstick.
3. Check the fluid level. Refer to Check Fluid Level.

Change Fluid

1. Clean the exterior of the transmission around the fluid filter assembly.
Page 38
16604
16604
Capacity
4.0 L (4.2 US qt)
Dexron III® Automatic Transmission Fluid or Equivalent
4.4 L (4.6 US qt)
a - Dipstick
b - Threaded hole
c - Maximum fluid level
d - Minimum fluid level
a - Dipstick
b - Threaded hole
c - Maximum fluid level
d - Minimum fluid level
Fluid type Part Number
Obtain locally
90-8M0113988 DECEMBER 2015
eng