mercury Workshop Repair Guides

Mercury Workshop Service and Repair Manuals

Cooling System - New System Diagnostics|Page 2838 > < Cooling System - New System Diagnostics|Page 2836
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Thermostat: Service and Repair

Typical Installation

Typical Installation

REMOVAL

1.

Disconnect battery cable and wiring connector from thermo switch in thermostat housing.

2.

Remove radiator cap, then attach a hose to drain tube and open draincock. Drain coolant level until its below water outlet connection. Close the
draincock.

3.

Loosen upper hose at radiator, then remove water outlet housing retaining bolts. Lift clear of engine and remove thermostat. Do not pry housing
off.

INSTALLATION

1.

Clean outlet housing and cylinder head mating surfaces.

2.

Position thermostat and seat so it will compress gasket. Position outlet to cylinder head, using a new gasket and install retaining bolts.

3.

Connect top hose to radiator and tighten clamp. Ensure that draincock is closed.

Cooling System - New System Diagnostics|Page 2838 > < Cooling System - New System Diagnostics|Page 2836