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Disassembly/Inspection and Service
KohlerEngines.com 20 690 01 Rev. F
Balance Weight/Piston Assembly Components
A
B
C
E
F
G
P
O
H
K
L
N
M
J
I
D
A Crankshaft Gear B Crankshaft C Crank Gear Key D
Third Generation
Balance Weight
E Governor Cross Shaft F Washer G Hitch Pin H Oil Seal
I End Cap J Connecting Rod K Wrist Pin Retainer L Wrist Pin
M Piston N Piston Ring Set O
First Generation
Balance Weight
P
Second Generation
Balance Weight
Remove Connecting Rod and Piston
NOTE: If a carbon ridge is present at top of bore, use a
ridge reamer to remove it before attempting to
remove piston.
1. Rotate crankshaft so rod journal is in 9 o’clock
position.
2. Remove screws and connecting rod cap.
3. Carefully push connecting rod and piston away from
crankshaft and out of cylinder bore.
Inspection and Service
Check bearing area (big end) for score marks and
excessive wear. Service replacement connecting rods
are available in STD crankpin size.
Remove Piston from Connecting Rod
Remove wrist pin retainer and wrist pin. Separate piston
from connecting rod.