Mercury 4.3 MPI SeaCore User Manual

Section 4 - Maintenance
Page 50 90-8M0113859 eng DECEMBER 2015
Engine Model Engine Oil Capacity Fluid Type
4.3 MPI and SeaCore 3.3 L (3.5 US qt)
Mercury/Quicksilver 25W‑40 Synthetic Blend Engine Oil, NMMA FC‑W
5.0 MPI and SeaCore 4.25 L (4.5 US qt)
6. With the boat at rest in the water, check the oil level and add specified fluid to bring the oil level up to, but not over, the
"FULL" or "OK" range.
NOTE: On the 4.3 engine , adding 0.6 L (0.63 qt) of engine oil will raise the level from the "ADD" mark to the top of the
"OK" range. On the 5.0 engine , adding 0.95 L (1 qt) of engine oil will raise the level from the "ADD" mark to the top of the
"OK" range.
7. Start the engine, run the engine for three minutes, and check for leaks. Stop the engine.
Power Steering Fluid
Checking
1. Stop the engine and center the sterndrive unit.
2. Remove the fill cap/dipstick and observe the level.
a. Proper fluid level with engine at normal operating temperature should be within the warm range.
b. Proper fluid level with engine cold should be within the cold range.
a - Power steering
pump
b - Cold range
c - Warm range
3. Fill to the "FULL" line with the specified fluid.
IMPORTANT: If fluid is not visible in pump, contact your authorized Mercury MerCruiser dealer.
Filling
1. Remove the fill cap/dipstick and observe the level.
2. Add the specified fluid to bring the fluid level up to the proper level.
Tube Ref No.
Description Where Used Part No.
114
Power Trim and Steering Fluid Power steering system 92-858074K01
Dexron III Automatic
Transmission Fluid (ATF)
Power steering system Obtain Locally
3. Reinstall the fill cap/dipstick.
Changing
Power steering fluid does not require changing unless it becomes contaminated with water or debris. Contact your authorized
Mercury MerCruiser dealer.
Engine Coolant
Checking
!
CAUTION
A sudden loss of pressure can cause hot coolant to boil and discharge violently resulting in serious injury from burns. Allow
the engine to cool down before removing the coolant pressure cap.
46013
a
b
c

Mercury 4.3 MPI SeaCore Specifications

General

Brand	Mercury
Model	4.3 MPI SeaCore
Category	Engine
Language	English