Briggs & Stratton BIG BLOCK EFI, Repair Manual

Page: 123 / 142

Section 5: Removal/Installation 119
Models 540000/610000 Fuel System Components
Access Cover/Blower Housing
Removal
1. Remove two Phillips screws (1-2) to re-
lease access cover from blower housing.
See Figure 5-15.
2. Lift access cover straight up to release
tongues from grooves in blower housing.
3. If equipped, disconnect tachometer/hour-
meter/MIL connector at back of access
cover.
4. Remove four hex fl ange screws (3-6) from
coupling nuts to release wire guard.
5. Remove hex fl ange screw (7) to release oil
cooler bracket from blower housing.
6. Remove hex fl ange screws (8-9) to release
left and right side air guides and blower
housing from intake manifold.
7. Remove four coupling nuts (3-6). Lift blow-
er housing straight up to disengage from
posts.
Installation
1. Place blower housing into position engag-
ing holes with four posts.
2. Verify high tension leads are routed
through slots on each side or damage will
occur when blower housing is tightened.
3. Install coupling nuts on posts (3-6). Alter-
nately tighten coupling nuts to 78-96 in-lbs
(9-11 Nm) using a crosswise pattern.
4. Install two hex fl ange screws (8-9) to fasten
left and right side air guides and blower
housing to intake manifold. Tighten screws
to 78-96 in-lbs (9-11 Nm).
5. Install hex fl ange screw (7) to fasten oil
cooler bracket to blower housing. Tighten
screw to 35-43 in-lbs (4-5 Nm).
6. Install four hex fl ange screws (3-6) to
fasten wire guard to coupling nuts. Tighten
screws to 78-96 in-lbs (9-11 Nm).
7. If equipped, connect tachometer/hourme-
ter/MIL connector at back of access cover.
8. Lower access cover straight down to en-
gage tongues in grooves of blower housing.
9. Verify IAC connector wire harness conduit
is routed through groove or damage will oc-
cur when access cover is tightened.
10. Install two Phillips screws (1-2) to fasten
access cover to blower housing. Tighten
screws to 35-43 in-lbs (4-5 Nm).
ECM
NOTE: A product improvement to dampen
vibration to the ECM/fuse block bracket was
recently introduced in production. A Briggs &
Stratton Service Kit (Part No. 847337) to up-
5 6
8
1
3
9
7
4
2
Figure 5-15 Remove Access Cover/Blower Housing.