68
Reassembly
KohlerEngines.com 32 690 01 Rev. G
NOTE: Make sure engine is assembled using all
specifi ed torque values, tightening sequences,
and clearances. Failure to observe specifi cations
could cause severe engine wear or damage.
Always use new gaskets.
Make sure all traces of any cleaner are removed before
engine is assembled and placed into operation. Even
small amounts of these cleaners can quickly break down
lubricating properties of engine oil.
Check oil pan, crankcase, cylinder heads, and valve
covers to be certain all old sealing material has been
removed. Use gasket remover, lacquer thinner, or paint
remover to remove any remaining traces. Clean surfaces
with isopropyl alcohol, acetone, lacquer thinner, or
electrical contact cleaner.
Connecting Rods/Piston/Breather Components
H
G
J
F
A
B
D
C
B
E
I
K
A Piston Ring Set B Piston Pin Retainer
C Piston (Style A) D Piston Pin
E Connecting Rod F
Connecting Rod
End Cap
G Breather Filter H
Breather Cover
Gasket
I
Inner Breather
Cover
J Oil Seal
K Piston (Style B)
Install Flywheel End Oil Seal
1. Make sure seal bore of crankcase is clean and free
of any nicks or burrs.
2. Apply a light coat of engine oil to outside diameter of
oil seal.
3. Install oil seal into crankcase using a seal driver.
Make sure oil seal is installed straight and true in
bore and tool bottoms against crankcase.
Install Breather Filter and Inner Cover
NOTE: Make sure drainback hole in gasket and cover is
aligned and open after cover is secured. Check
using a piece of wire or similar tool.
1. Install breather fi lter between 2 ribs inside inner
breather chamber.
2. Make sure sealing surfaces are clean and free of
nicks or damage. Install a new breather cover gasket
and breather cover onto chamber.
3. Secure breather cover with M6 screw. Torque screw
to 10.7 N·m (95 in. lb.) into a new, cored hole, or
7.3 N·m (65 in. lb.) into a used hole.
Install Governor Cross Shaft
1. Lubricate governor cross shaft bearing surfaces in
crankcase with engine oil.
2. Slide lower washer onto governor cross shaft and
install cross shaft from inside of crankcase.
3. Install nylon washer onto governor cross shaft, then
start push-on retaining ring. Hold cross shaft up in
position, place a 0.50 mm (0.020 in.) feeler gauge on
top of nylon washer, and push retaining ring down
shaft to secure. Remove feeler gauge, which will
have established proper endplay.
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