Engine Service Manual

29
Air Cleaner/Intake
32 690 03 Rev. I KohlerEngines.com
Air Cleaner Base
A
B
F
C
D
E
A
G
D
H
A Air Cleaner Base B Breather Hose
C Ground Lead D Solenoid Lead
E
Smart-Choke
™
Bracket Assembly
F Thermostat
G
eChoke
™
Bracket
Assembly
H Stepper Motor
Disassembly/Reassembly
NOTE: On engines equipped with eChoke
™
, stepper
motor has a special retract routine that can be
activated to ensure motor is in correct position
prior to removal or upon replacement of stepper
motor when a problem is shown to exist with
stepper motor assembly and carburetor.
Activation of this routine will occur by initiating
three (3) consecutive Key On–Off cycles. Every
Key On and Off should be > 2 seconds and <
3.5 seconds. Note that if no other connections
are disturbed, stepper motor will be repositioned
at next key ON and master module will go back
to normal choke operation mode.
If air cleaner base requires removal, proceed as follows:
1. Remove mounting screws for fuel pump (if
equipped), and blower housing.
2. Raise or remove blower housing for access to air
cleaner base.
3. Remove air cleaner components from base.
4. Remove nuts securing air cleaner base onto
mounting studs.
5. Disconnect ground lead and fuel shut-off solenoid
lead (if equipped).
6. If equipped with eChoke
™
, disconnect connecter
from stepper motor.
7. Remove Smart-Choke
™
or eChoke
™
bracket
assembly (if equipped).
8. Disconnect choke linkage from carburetor assembly.
9. Disconnect breather hose from air cleaner base,
then remove base and gasket.
10. Reverse procedure to reassemble components.
Torque nuts to 6.2-7.3 N·m (55-65 in. lb.). Torque
blower housing screws to 4.0 N·m (35 in. lb.), and
front HI-LO screws to 2.8 N·m (25 in. lb.). Torque
Smart-Choke
™
bracket assembly screw to 5 N·m (45
in. lb.).
BREATHER TUBE
Ensure both ends of breather tube are properly
connected.
AIR COOLING
WARNING
Hot Parts can cause severe burns.
Do not touch engine while operating or just
after stopping.
Never operate engine with heat shields or guards
removed.
Proper cooling is essential. To prevent over heating,
clean screens, cooling fi ns, and other external surfaces
of engine. Avoid spraying water at wiring harness or any
electrical components. Refer to Maintenance Schedule.