Mercury 135 Optimax User Manual

OUTBOARD INSTALLATION
67
Dual Outboards
Connect a common ground cable (wire size same as engine battery cables) between negative (–)
terminals on starting batteries.
(-)
(-)
a
a
b
b
c
d
d
15497
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 8mm (5/16 in.), with separate fuel line/fuel
tank pickup for each engine.
1. Fasten remote fuel hose to fitting with hose clamp.

Mercury 135 Optimax Specifications

General

Starting	Electric
Exhaust	Through Prop
Horsepower	135 HP
Fuel Induction System	Direct Fuel Injection
Alternator Amp	60 Amp
Shaft Length	20", 25"
Full Throttle RPM	5250-5750
Steering	Hydraulic