Kohler CH680 Service Manual

Replace Rotary Stepper Motor
D
C
B
A
A
C
A
Rotary Stepper
Motor
B
Installed with Leads
Down
C
Stepper Motor
Bracket
D Rivet
NOTE: Remove air cleaner system to access carburetor
and eChoke
™
components. Refer to
Disassembly/Inspection and Service and
Reassembly procedure.
1. Open retainer clip securing 4 wire eChoke
™
lead to
#1 inner baffl e. Disconnect stepper motor connector
from wiring harness. Remove 2 screws securing
stepper motor bracket to carburetor.
2. Remove set screw securing stepper motor lever to
stepper motor. Carefully remove lever, keeping
linkage attached.
3. Remove rotatory stepper motor/bracket/rivet
assembly.
4. Position new rotary stepper motor on bracket with
leads down, insert rivet (as shown) and use rivet tool
to pull rivet until tight. Install second rivet to secure
motor to bracket.
5. Position rotary stepper motor/bracket/rivet assembly
on carburetor and reinstall lever on motor. Secure
with set screw. Torque set screw to 0.4 N·m
(3.5 in. lb.).
6. Install 2 screws to secure motor/bracket/rivet
assembly to carburetor. Torque to 4.0 N·m
(35 in. lb.).
7. Connect stepper motor connector to wiring harness.
Install eChoke
™
lead in retainer clip; close clip to
secure.
Fuel System
3924 690 06 Rev. P KohlerEngines.com

Kohler CH680 Specifications

General

Displacement	674 cc
Compression Ratio	8.5:1
Fuel System	Carburetor
Ignition System	Electronic
Cooling System	Air-cooled
Starter	Electric
Engine Type	4-cycle, overhead valve (OHV)
Oil Capacity	1.9 L (2.0 U.S. qt)
Lubrication	Full Pressure
Power	22 hp (16.4 kW) at 3600 rpm