Service Manual

52
Disassembly/Inspection and Service
KohlerEngines.com 66 690 01 Rev. C
Remove Closure Plate
1. Remove screws securing closure plate to crankcase.
2. Locate three splitting tabs, which are cast into
perimeter of closure plate. Insert drive end of a 1/2"
breaker bar between top splitting tab and crankcase.
Hold handle horizontal and pull it toward you to
break RTV seal. If necessary, pry at bottom splitting
tabs also. Do not pry on sealing surfaces, as this
could cause leaks. Note assembly and orientation of
parts. Carefully pull closure plate from crankcase.
Inspection
Inspect oil seal in closure plate and remove it if it is worn
or damaged.
Inspect main bearing surface for wear or damage.
Replace closure plate assembly if required.
Crankcase Components
A
H
I
C
D
E
F
G
L
N
O
P
Q
S
R
A
A
M
K
J
Z
Y
U
V
X
W
T
B
A Oil Seal B Closure Plate (Style A) C Governor Gear Shaft D
Locking Tab Thrust
Washer
E Governor Gear F Regulating Pin G Camshaft H
Gerotor Gears
(Style A)
I
Oil Pump Assembly
(Style A)
J Nipple K Oil Filter L Crankshaft
M Governor Cross Shaft N Piston Pin Retainer O Piston Pin P Connecting Rod
Q Piston (Style B) R Piston Ring Set S Piston (Style A) T Closure Plate (Style B)
U Ball (Style B) V Spring (Style B) W
Oil Pump Cover O-ring
(Style B)
X
Outer Gerotor Gear
(Style B)
Y
Oil Pump Assembly
(Style B)
Z Oil Pick-Up (Style B)