Briggs & Stratton VANGUARD M490000 Repair Manual page 123

16
Installation
1. Position new EFI wire harness on engine separating
conduit and connectors into three groups as shown in
Figure 16. Proceed as follows:
A. Adjust wire harness as necessary, so that
ignition coil, MAP/MAT sensor, and fuel injector
connectors and conduit are positioned below the
fuel rail.
B. Draw out harness until ECM J1 and J2
connectors are seated at top of cylinder 1 valve
cover and fuse/relay block is next to voltage
regulator.
C. Draw out harness, so that 6-place (or 8-place)
engine to chassis connector, starter solenoid
ring and spade terminals, and ground wire ring
terminal run under cylinder 1 heat shield to area
of starter motor and oil fill tube.
D. Feed CKP sensor, fuel pump module, and
oil pressure switch connectors and conduit
under intake manifold (at point of cylinder 1 fuel
injector), and then up between fuel rail and air
intake elbow to outboard side of CKP sensor
bracket.
E. Route fuel pump module and oil pressure switch
connectors and conduit through opening at back
of cylinder 2 heat shield to area of fuel pump
module.
2. See C of Figure 16. Proceed as follows:
• Connect CKP sensor connector.
• Connect fuel pump module connector. Push in
grey secondary lock to secure.
• Route oil pressure switch sensor wire behind
fuel pump module bracket, and then capture in
hose clip on cylinder 2 heat shield. See Figure
17. Connect electrical connector to oil pressure
switch installed in oil filter mount.
3. See B of Figure 16. Proceed as follows:
• Install EFI wire harness into retaining clip on fuel
rail (centered at front of intake elbow).
• Connect MAP/MAT sensor connector. Push in
red secondary lock to secure.
• Connect fuel injector connectors. Push in green
secondary locks to secure.
• Connect HO2 sensor connector.
• Install cable strap to secure EFI wire harness to
intake manifold.
NOTE: Ignition coil connectors are connected
during blower housing installation.
• Orient EHT sensor with end rotated against tab
on cylinder 1. Install TORX screw and tighten to
20-40 lb-in (2-5 Nm).
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