Mercury Optimax 150 User Manual

DIRECT FUEL INJECTION
90-855347R1 JANUARY 1999 Page 3B-35
FUEL INJECTOR REMOVAL
1. Remove 2 screws securing injector.
NOTE: Use a cotter pin extractor tool in pry holes to remove injectors.
2. Gently pry up on injector to loosen O-ring adhesion and remove injector.
56125
a
a
b
57418
a-Screws
b-Pry Holes
3. Inspect fuel injector orifices for foreign debris; O-rings for cuts or abrasions and plastic
components for heat damage. Replace components as required.
4. An ohm test of the fuel injector may be made by connecting test leads to injector termi-
nals. Ohm reading should be 1.8 ± 0.1 ohm.
VOLTS
DC AMPS
OHMS
0
2
46
8
10
DCV ACV
DVA
0
0
5
10
20
10
30
15
40
20
0
5
10
15
20
30
40
60
100
200
X1
56002
56124
a
b
c
a
b
c
a-Fuel Injector
b-Fuel Nozzle
c-O-Rings

Mercury Optimax 150 Specifications

General

Horsepower	150 HP
Engine Type	V6
Alternator Output	60 amp / 756 watt
Starting	Electric
Steering	Remote
Displacement	2.5 L
Fuel Induction System	2-Stage Direct Fuel Injection (DFI)
Shaft Length	20", 25"
Dry Weight	431 lbs (20 in), 439 lbs (25 in)