Mercury Optimax 115 Service Manual page 190

DIRECT FUEL INJECTION
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.
a -
b -
c -
d -
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).
c
c
a -
b -
c -
d -
e -
Page 3B-42
a
a
a
a
Screws
Diaphragm
Spring
O-ring
b
b
a
a
56137
Diaphragm
Spring
O-ring
Cover
Screws [Torque to 70 lb. in. (8.0 Nm)]
d c
a
b
c
b
56135
d a
56136
e
b
e
b
56135
90-855347R1 JANUARY 1999