Hot Water Heater Installation - Mercury Alpha Installation Manual

7. Recheck alignment with alignment tool. Tool must enter coupling splines freely. If not,
readjust front mounts.
8. When alignment is correct, tighten locknut securely. Recheck alignment.
9. Bend tab down on adjusting nut.
10. Remove alignment tool. If not installing drive, fold bell housing dust cover flap back into
place and tape shut for boat shipment. Dust cover flap will have to be removed before
operating engine.
11. Hook up the ground stud.
12. Connect the trim pump sender wires.
13. Install the water inlet hose onto the transom.

Hot Water Heater Installation

IMPORTANT: When connecting a cabin heater or hot water heater:
•
Supply hose (from engine to heater) and return hose (from heater to engine)
MUST NOT EXCEED 5/8 in. (16 mm) inside diameter (ID).
•
Make heater connections ONLY at locations shown.
•
Refer to manufacturers' instructions for complete installation information and
procedures.
•
Do not reposition engine temperature switch.
Avoid a performance loss and/or possible engine damage. Engine coolant must
flow continuously from the engine intake manifold to the engine water circulating
pump. NEVER close-off or block the coolant flow to or from a heater.
Avoid engine overheating which could result in engine damage. On models
equipped with Closed Cooling, an air pocket may form in the closed cooling system
if some coolant is lost from the system and the cabin heater or hot water is mounted
higher than the fill cap on the heat exchanger. Heater must be mounted lower than
the fill cap of the heat exchanger on models so equipped.
SUPPLY HOSE CONNECTION
3.0L
a -
90-860172011
Location For Hot Water Supply (Install Bayonet Fitting Here)
GASOLINE STERNDRIVE INSTALLATION MANUAL
CAUTION
CAUTION
a
INDEX
76095
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