Briggs & Stratton Vanguard EFI 380000, Repair Manual

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5
85
ECM
Removal
1. See Air Cleaner Assembly, Removal .
2. Remove two hex flange screws to release ECM from
ECM bracket.
3. Disconnect ECM connector.
Installation
1. Connect ECM connector.
2. Install two hex flange screws to fasten ECM to ECM
bracket. Alternately tighten screws to 43-52 lb-in (5-6
Nm).
3. See Air Cleaner Assembly, Installation .
MAP/MAT Sensor
Removal
1. See Air Cleaner Assembly, Removal .
2. See Blower Housing, Removal .
3. Pull out red secondary lock and press to disconnect
MAP/MAT sensor connector.
4. Remove hex flange screw to release sensor flange
from intake manifold.
5. Remove sensor from intake manifold.
Installation
1. Lightly lubricate O-ring of MAP/MAT sensor.
2. Install sensor into intake manifold aligning hole in
flange with hole in intake manifold.
3. Install hex flange screw and tighten to 78- 96 lb-in
(9-11 Nm).
4. Connect MAP/MAT sensor connector. Push in red
secondary lock to secure.
5. See Blower Housing, Installation .
6. See Air Cleaner Assembly, Installation .
Ignition Coil
Removal
1. See Air Cleaner Assembly, Removal .
2. See Blower Housing, Removal .
3. Disconnect ignition coil connector.
4. Remove ignition coil. See Vanguard OHV V-Twin
Repair Manual.
Installation
1. Install ignition coil. See Vanguard OHV VTwin Repair
Manual.
2. Connect ignition coil connector.
3. See
Blower Housing, Installation .
4. See Air Cleaner Assembly, Installation .
Fuel Filter
Removal
1. Relieve fuel system pressure. See CHECK/RELIEVE
FUEL SYSTEM PRESSURE in this section.
2. Squeeze hose clip and remove fuel inlet hose from
fuel filter fitting.
NOTE: Wrap shop towel around fuel filter fittings to
catch any fuel leakage.
3. Squeeze hose clip and remove fuel outlet hose from
fuel filter fitting.
Installation
1. With the arrow pointing in the direction of fuel flow,
install fuel filter between fuel inlet and outlet hoses.
See Figure 8.
2. Crank engine using electric starter or rewind cord to
pressurize fuel system. Check for fuel leaks.
8
Mechanical Diaphragm Fuel Pump
Removal
1. See Fuel Pump Module Cover, Removal .
2. Squeeze hose clip at fuel inlet port ( A ) and remove
hose from fuel filter. See Figure 9.
NOTE: Wrap shop towel around fittings to catch any
fuel leakage.
3. Squeeze hose clip at fuel outlet port ( B ) and remove
hose to fuel pump module.
4. Squeeze hose clip and remove crankcase vacuum
hose from pulse line fitting ( C ).
5. Remove two hex flange screws to release fuel pump
from bracket.
Not for
Reproduction