74
Reassembly
KohlerEngines.com 32 690 03 Rev. E
Cylinder Head Components
A
B
C
I
E
F
G
H
D
K
L
M
N
J
P
O
A Gasket B Valve C Cylinder Head D Valve Spring Cap
E Valve Stem Seal F Valve Spring G Valve Spring Keeper H Stud
I Spark Plug J Guide Plate K Push Rod L Rocker Arm
M Rocker Arm Pivots N Adjusters O Washer P Valve Cover
Assemble and Install Cylinder Heads
Valve Stem Seals
Use a new seal whenever valve is removed, or if seal is
deteriorated or damaged. 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.
● Intake and exhaust valves.
● Valve stem seal.
● Washer (intake valve only).
● Valve springs.
● Valve spring caps.
● Valve spring keepers.
Install Cylinder Heads
NOTE: Match numbers embossed on cylinder heads
and crankcase.
NOTE: When installing cylinder heads, new screws
should always be used. New screws are
supplied in gasket sets.
NOTE: Push rods should always be installed in same
position as before disassembly.
1. Check to make sure there are no nicks or burrs on
sealing surfaces of cylinder head or crankcase.
Make sure dowel locating pins are in lower 2 cylinder
bolt holes on each side.
2. Install a new cylinder head gasket (with printing up)
on each side.
3. Install each cylinder head and start 4 new screws.
4. Torque screws in 2 stages; rst to 22.6 N·m
(200 in. lb.), then nally to 41.8 N·m (370 in. lb.),
following sequence.
Install Rocker Arms
1. Note mark or tag identifying push rod as either
intake or exhaust and cylinder 1 or 2. Check each
push rod is straight and not bent. Dip ends of push
rods in engine oil and install in their original
positions, making sure each push rod ball seats in its
tappet socket.
2. Install guide plate and studs. Torque studs to
11.3 N·m (100 in. lb.).
3. Apply grease to contact surfaces of adjusters, rocker
arms and rocker arm pivots. Install rocker arms and
rocker arm pivots onto appropriate cylinder head,
and install adjuster nger tight. Make sure set screw
is backed out until ush with adjuster.
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