Thermostat; Block Venting; Water Pressure Connection; Cooling System - Evinrude E-TEC E40DRLSCB Service Manual

COOLING SYSTEM

COMPONENTS
Overcooling: Debris may prevent the valve from
closing completely.
Pressure relief valve components

Thermostat

The thermostat controls water flow and operating
temperature at lower speeds (below 1800 RPM).
Overheating: A restricted or faulty thermostat typ-
ically results in LOW SPEED overheating.
Overcooling: Debris may prevent the thermostat
from closing completely.
4
1. Cover and O-ring
2. Spring and thermostat
3. Cylinder head
4. Cylinder head seal
192
002437
3 2 1
002439

Block Venting

A fitting and hose connected to the top of the
exhaust cover allows the constant movement of
water and/or air from the block. Circulated water
flows through the EMM and vapor separator
before exiting through the overboard indicator.
1. Fitting

Water Pressure Connection

A fitting and hose for an accessory water pressure
gauge can be connected at the top of the cylinder
block next to the pressure valve housing.
1. Fitting
1
002478
1
002461