Mercury 90 Operation Maintenance Warranty Installation Manual

Oil Injection Set‑Up
FILLING OIL INJECTION SYSTEM
1.
Fill the oil tank with the specified oil. Refer to Filling Oil Injection
System. Add only enough oil to bring the oil level up to the bottom of the
fill neck.
29465
All Models Capacity Fluid Type
Oil tank 4.72 liters (5 US qt) OptiMax/DFI 2‑Cycle Engine Oil
PRIMING THE OIL INJECTION PUMP
Before starting engine for the first time, prime the oil injection pump. Priming
will remove any air that may be in the pump, oil supply hose, or internal
passages.
a - Oil injection pump
b - Oil supply hose
IMPORTANT: Fill the engine fuel system with fuel before priming the oil
injection pump. Otherwise, the fuel pump will run without fuel during the priming
process and may be damaged.
Prime the oil injection pump as follows:
1. Fill the engine fuel tank with fuel.
a
b
7912
OUTBOARD INSTALLATION
146 eng

Mercury 90 Specifications

General

Brand	Mercury
Model	90
Category	Outboard Motor
Language	English