Service and Repairs

99
Reassembly
17 690 01 Rev. L KohlerEngines.com
CH260-CH440 Cylinder Head Components
I
J
H
G
D
C
B
A
L
K
M
F
E
N
1
2
3
4
A Valve Cover B Adjuster Nut C Rocker Arm D Rocker Arm Stud
E Push Rod Guide F Push Rod G Valve Keeper H Valve Spring
I Valve Stem Seal J Spark Plug K Cylinder Head L Valve
M Dowel Pin N
Cylinder Head
Gasket
O Torque Sequence
Assemble Cylinder Head
NOTE: Engine utilizes valve stem seals on valves.
Always use a new seal when valves are installed
in cylinder head. Never reuse old seals.
1. Install valves into their respective positions.
2. Install new valve seals on stem of valves.
3. Install valve springs and retainers into their
respective locations in cylinder head. Support valve
heads from underneath. Using hand pressure,
compress each valve spring and slide each retainer
onto valve stem to lock in place.
Install Cylinder Head
1. Check to make sure there are no nicks or burrs on
sealing surfaces of cylinder head or crankcase.
2. Rotate crankshaft to position piston at TDC on
compression stroke.
3. Install dowel pins into recesses around cylinder head
bolt holes as noted in disassembly.
4. Install a new cylinder head gasket.
CH245, CH255, CH260, CH270, CH395
5. Install cylinder head and start screws. Torque screws
in increments using sequence shown. Torque screws
following table.
Model Initial Torque Final Torque
CH245,CH255
CH260,CH270
12 N·m (106 in. lb.) 24 N·m (212 in. lb.)
CH395 18 N·m (159 in. lb.) 36 N·m (319 in. lb.)
CH440
5. Apply clean engine oil under head of each cylinder
head screw. Install cylinder head and start screws.
Finger tighten screws, then torque screws in
increments using sequence shown. Torque screws
following table.
Model Initial Torque Final Torque
CH440 25 N·m (221 in. lb.) 57.5 N·m (509 in. lb.)