Mercury Optimax 150 User Manual

DIRECT FUEL INJECTION
Page 3B-42 90-855347R1 JANUARY 1999
TRACKER VALVE REMOVAL
1. Remove 4 screws securing tracker valve and remove tracker assembly.
2. Inspect tracker diaphragm for cuts and tears.
3. Inspect tracker cover O-ring for cuts and abrasions. Replace components as re-
quired.
56136
a
b
c
b
c
d
56135
a
a
a
a
a-Screws
b-Diaphragm
c-Spring
d-O-ring
TRACKER VALVE INSTALLATION
NOTE: Apply a light coat of 2-4-C w/Teflon to tracker diaphragm and cover O-ring to aid
in their retention on fuel rail while reinstalling tracker valve to fuel rail.
NOTE: Apply anti-seize grease (obtain locally) or 2-4-C w/Teflon to tracker valve attach-
ing screw threads.
1. Position diaphragm, spring and O-ring onto fuel rail.
2. Place cover over diaphragm/spring/O-ring assembly and secure with 4 screws.
Torque screws to 70 lb. in. (8.0 Nm).
56135
a
b
b
c
b
a
56137
d
e
e
a
b
c
a-Diaphragm
b-Spring
c-O-ring
d-Cover
e-Screws [Torque to 70 lb. in. (8.0 Nm)]

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)