Service Manual

63
Reassembly
66 690 01 Rev. C KohlerEngines.com
Install Hydraulic Lifters
NOTE: Hydraulic lifters should always be installed in
same position as before disassembly.
1. Lubricate lifters and lifter bores in crankcase with
engine oil.
2. Install lifters into their respective lifter bores
according to location and cylinder number marked
during assembly.
Valve Stem Seals
These engines use valve stem seals on intake and
exhaust valves. Always use a new seal before valves are
installed in cylinder head. Also, replace seals if they are
deteriorated or damaged in any way. Never reuse an old
seal.
Assemble Cylinder Heads
Prior to installation, lubricate all components with engine
oil, paying particular attention to lip of valve stem seal,
valve stems and valve guides. Install following items in
order listed below using a valve spring compressor.
● Valve stem seals.
● Intake and exhaust valves.
● Valve spring caps.
● Valve springs.
● Valve spring retainers.
● Valve spring keepers.
Cylinder Head Components
A
B
E
F
G
H
I
J
K
L
M
C
D
N
A Valve B Head C Hydraulic Lifter D Push Rods
E Valve Stem Seal F Valve Spring Cap G Spring H Valve Spring Retainers
I Valve Spring Keepers J Rocker Arms K Rocker Arm Pivot L Rocker Arm Screw
M Valve Cover N Fuel Pump