Mercury MerCruiser Service Manual page 426

Models with Standard Cooling
Specifications
Crossover with Thermostat—Exploded View
Ref. No. Qty.
1 1
2 2
3 2
4 1
5 1
6 2
7 1
8 1
9 1
10 1
11 2
12 1
13 1
Thermostat Assembly
Thermostat Removal from the Crossover
1. Allow the engine to cool, and drain the seawater from the engine.
2. Remove the thermostat cap from the crossover assembly.
3. Remove the thermostat cap gasket, thermostat, and thermostat housing gasket from the crossover assembly.
Thermostat Testing
1. Remove the thermostat.
2. Place the thermostat on blocks in a container.
3. Add water to the container until it covers the thermostat.
Page 6B-2
Description
Thermostat operating temperature
6
5
4
3
2
1
Description
Crossover with fittings
Barbed hose fitting
Plug
O‑ring
Blue drain plug
Screw
Thermostat cap
Thermostat cap gasket
Thermostat (60° C [140° F])
Thermostat housing gasket
Crossover seal
Temperature sensor
Barbed hose fitting
© 2016 Mercury Marine
Specification
60° C (140° F)
7
8
9
10
11
3
2
12
13
56716
Torque
Nm
50.2
50.2
Hand tight
27.1
16.3
10.9
90-8M0099748 eng DECEMBER 2015
lb‑in. lb‑ft
– 37
– 37
– 20
144.2 –
96.4 –