Kohler Command PRO CH620-CH740 Owner's Manual page 74

Disassembly/Inspection and Service
Flywheel/Ignition Components
A Debris Screen
E Flywheel
I Backing Plate
M Ring Support
Remove Ignition Modules
1. Disconnect lead(s) from each ignition module.
Modules for non-SMART-SPARK
have only one kill lead.
2. Rotate fl ywheel so magnet is away from modules.
3. Remove mounting screws and ignition modules.
Note position of ignition modules.
Remove Debris Screen and Fan
1. Small metal retainers are typically attached on 3 of 7
mounting posts for positive retention of plastic debris
screen. Use a hook-end tool next to post and pull
outward to separate small metal retainers. Then
unsnap fan from remaining mounting posts.
2. Remove screws and fan.
Remove Flywheel
NOTE: Always use a fl ywheel strap wrench or holding
tool to hold fl ywheel when loosening or
tightening fl ywheel screw. Do not use any type
of bar or wedge to hold fl ywheel. Use of such
tools could cause fl ywheel to become cracked or
damaged.
NOTE: Always use a fl ywheel puller to remove fl ywheel
from crankshaft. Do not strike crankshaft or
fl ywheel, as these parts could become cracked
or damaged. Striking puller or crankshaft can
cause crank gear to move, affecting crankshaft
end play.
66
J
I
B Fan
F Magnet
J Woodruff Key
N Metal Debris Screen
ignition systems
™
KohlerEngines.com
P
H
D
F
G
E
C Flywheel Screw
G Stator
K Spring Washer
O Washer
1. Use a fl ywheel strap wrench or holding tool (see
Tools and Aids) to hold fl ywheel and loosen screw
securing fl ywheel to crankshaft.
2. Remove screw and washer.
3. Use a puller to remove fl ywheel from crankshaft.
4. Remove woodruff key from crankshaft.
Inspection
Inspect fl ywheel for cracks and fl ywheel keyway for
damage. Replace fl ywheel if it is cracked. Replace
fl ywheel, crankshaft, and key if fl ywheel key is sheared
or keyway is damaged.
Inspect ring gear for cracks or damage. Kohler does not
provide ring gear as a serviceable part. Replace fl ywheel
if ring gear is damaged.
K L
M
C
B
D Washer
H Ignition Module
L Spacer
Metal Debris Screen
P
Assembly
24 690 06 Rev. K
O
N
A