Mercury MerCruiser 4.3 TKS - Changing Oil and Filter; Easy Engine Oil Drain System

Section 5 - Maintenance
90-899883179 OCTOBER 2007 Page 49
1. Remove oil fill cap.
a
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a - Oil fill cap
IMPORTANT: Add the specified engine oil to bring the level up to, but not over, the full or
OK range mark on the dipstick.
2. Add the specified engine oil to bring the level up to, but not over, the full or OK range
mark on the dipstick. Recheck oil level.
3. Replace the fill cap.
Engine Model Engine Oil Capacity Fluid type
4.3 TKS 3.8 liters (4 U.S. qt.)
Mercury Full‑Synthetic MerCruiser Oil 20W‑405.0 TKS
4.25 liters (4.5 U.S. qt.)
5.7 TKS
Changing Oil and Filter
Refer to the Maintenance schedule for the change interval. Engine oil should be changed
before placing the boat in storage.
IMPORTANT: Change engine oil when the engine is warm from operation. Warm oil flows
more freely, carrying away more impurities. Use only recommended engine oil (refer to
Specifications).
EASY ENGINE OIL DRAIN SYSTEM
NOTE: Boat must be out of water to perform this procedure.
1. Loosen the oil filter to vent the system.
f
e
d
c
b
a
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a - Bilge drain plug
b - Tether
c - Clip
d - Oil drain hose plug
e - Oil drain hose
f - Bilge drain flange