Mercury 150 Operation, Maintenance And Installation Manual page 101

OUTBOARD INSTALLATION
Dual Outboards
Connect a common ground cable (wire size same as engine battery cables)
between negative (–) terminals on starting batteries.
b
c
a - Red sleeve ‑ positive (+)
b - Black sleeve ‑ negative (–)
c - Ground cable
d - Cranking battery
FUEL HOSE AND OIL HOSE CONNECTIONS
Fuel Hose Connection
Fuel hose size ‑ Minimum fuel line inside diameter (I.D.) is 8 mm (5/16 in.), with
a separate fuel line/fuel tank pickup for each engine.
1. Fasten the remote fuel hose to the fitting with a hose clamp.
eng
b
a
(-)
a
(-)
d
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d
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