Kohler Command PRO EFI ECH749 [177/180] Reassembly
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Kohler Command PRO EFI ECH749 [177/180] Reassembly

Kohler Command PRO EFI ECH749 [177/180] Reassembly
Install Throttle Control Panel (if equipped)
NOTE: To identify various parts and assembly of throttle
control panel, refer to External Governor Control
Components.
1. Secure throttle control panel to crankcase with
thread forming screws.
2. Attach governor spring to previously marked hole on
governor lever.
Install Air Cleaner Assembly
Refer to Air Cleaner/Intake Air for air cleaner reassembly
procedure.
Heavy-Duty Air Cleaner
1. Install air cleaner assembly onto throttle body
mounting studs. Secure with nuts and screws.
Torque nuts to 7.4-9.0 N·m (65.5-80 in. lb.) and
torque screws to 4.6-6.9 N·m (41-61 in. lb.).
Low-Profi le Air Cleaner ETB ECH EFI
1. Verify O-ring is present in air cleaner base. Position
base on electronic throttle body.
2. Install screws securing base to LPAC support
bracket (with fuses) to fi nger tight.
3. Install nuts securing base to throttle body. Torque
nuts to 8.3 N·m (73 in. lb.).
4. Then torque screws securing base to LPAC support
bracket to 8.3 N·m (73 in. lb.).
B
A
A ETB Cover B Air Cleaner Base
5. Install ETB cover to air cleaner base. Torque screws
to 5.6 N·m (50 in. lb.).
6. Install air cleaner components as described in Air
Cleaner/Intake.
Low-Profi le Air Cleaner
1. Verify O-ring is present around machined O.D. of
throttle body and place air cleaner base onto throttle
body studs. Secure air cleaner base using nuts.
Attach air cleaner base bracket to cylinder heads
with screws behind any control panel or bracket.
Attach air cleaner base to lower bracket with 2 M5
screws through lower section of base. Torque nuts to
8.3 N·m (73 in. lb.), and 2 lower M5 mounting
screws (when applicable) to 4.0 N·m (35 in. lb.).
2. Install air cleaner components as described in Air
Cleaner/Intake.
Setting Initial Governor Adjustment (if equipped)
ECH EFI
1. Move governor lever toward throttle body as far as it
will go (wide-open throttle) and hold in position.
2. Insert a nail into hole on cross shaft and rotate shaft
counterclockwise as far as it will turn, then torque
hex nut to 7.1 N·m (63 in. lb.).
BOSCH EFI (CH26, CH735, CH745)
Refer to EFI SYSTEM-BOSCH section for Initial
Governor Adjustment procedure.
Install Muffl er
Oxygen Sensor Wire Detail
A
A
Keep a minimum of 25 mm (1.0 in.) radius at
grommet.
NOTE: Always route harness away from hot exhaust
and away from moving parts.
1. Install port liners (if equipped), slotted end fi rst, into
exhaust ports until fi nger tight. (Exhaust components
will press them to fi nal depth.) Install exhaust
gaskets and muffl er on exhaust studs.
2. Install muffl er and attaching hardware to muffl er
bracket. Install nuts on exhaust studs.
3. Torque nuts to 27.8 N·m (246 in. lb.). Torque screws
to 9.9 N·m (88 in. lb.).
4. Install oxygen sensor and secure using appropriate
torque.
Torque smaller 14 mm (9/16 in.) wrench size sensor
to 18 N·m (159 in. lb.).
Torque larger 22 mm (7/8 in.) wrench size sensor to
50.1 N·m (37 ft. lb.).
5. Connect sensor to wire harness and secure to fuse
holder bracket.
Reassembly
17724 690 01 Rev. O KohlerEngines.com

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