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Disassembly/Inspection and Service
20 690 01 Rev. F KohlerEngines.com
Disassemble Cylinder Head
NOTE: Before disassembly, mark all valve train
components that will be reused, to assure they
are reassembled on same side.
1. Remove spark plug.
2. Remove adjustment nuts, pivots and rocker arms
from pivot studs.
3. Remove rocker arm pivot studs and push rod guide
plates.
4. Remove valves.
a. Compress valve springs using a valve spring
compressor and remove keepers.
b. Remove compressor; then remove valve spring
caps, valve springs, and valves.
Remove Valve Cover and Cylinder Head
1. Remove screws securing valve cover and any
attached brackets.
2. Remove valve cover and gasket from cylinder head.
3. Loosen inner set screws (T15 TORX) and back off
rocker arm adjusting nuts. Remove push rods and
mark them, so they can be reinstalled in same
location.
4. Remove screws securing cylinder head. Note thick
washer used on screw closest to exhaust port.
5. Remove cylinder head and head gasket.
6. Remove drain back check ball (some models) from
keyhole slot in crankcase. Models without a check
ball have an internal drain back tube in crankcase.
Cylinder Head Components
D
R
Q
J
A
P
O
N
M
L
K
H
F
I
G
E
C
B
A Gasket B Valve C Cylinder Head D Spark Plug
E Cylinder Head Screw F Push Rod G Valve Spring Retainer H Valve Stem Seal
I Valve Spring J Valve Spring Cap K Rocker Arm L Set Screw
M Valve Cover Gasket N Valve Cover O Screw P Rocker Arm Pivot
Q Rocker Arm Stud R Push Rod Guide Plate