Mercury MerCruiser 4.3 TKS User Manual

Section 6 - Storage
Page 98 90-899883179 OCTOBER 2007
3. Visually verify that water is draining. If water does not drain, remove the blue drain plug
from the distribution housing and drain manually.
a
b
6137
a - Drain location ‑ orange or red b - Blue drain plug
4. Allow the system to drain for a minimum of five minutes. Mercury MerCruiser
recommends leaving the plugs out while transporting the boat or while performing other
maintenance to ensure that all water is drained.
5. Close the drain system by rotating the blue handle clockwise until it stops or installing
the blue drain plug. The handle is fully seated when no red is visible. Do not overtighten
handle as this will create new threads.
Three Point Manual Drain System
BOAT IN THE WATER
NOTE: Use this procedure if your engine is not equipped with an air actuated single point
drain system or if the air actuated single point drain system fails.
1. Close the seacock (if equipped) or remove and plug the water inlet hose.
2. Remove the blue drain plug from the distribution housing (lower front, port side).
6138
a
a - Blue drain plug

Mercury MerCruiser 4.3 TKS Specifications

General

Brand	Mercury
Model	MerCruiser 4.3 TKS
Category	Engine
Language	English