36
Disassembly/Inspection and Service
KohlerEngines.com
18 690 01 Rev. F
Remove Valve Cover/Breather, Rocker Arms, Push
Rods and Cylinder Head Assembly
NOTE: Mark location of push rods and any other part
removed that will be reused.
Valve Cover with Gasket
1. Remove screws and remove valve cover and gasket
from engine. Breather assembly is inside valve
cover.
2. Remove screws securing cylinder shroud and
remove cylinder shroud.
3. Loosen and remove rocker arm lock nuts and
adjuster nuts. Remove rocker arms and push rods.
4. Remove spark plug.
5. Remove screws securing cylinder head.
6. Remove cylinder head, dowel pins, and cylinder
head gasket.
Valve Cover with RTV Sealant
NOTE: Valve cover is sealed to cylinder head using
RTV silicone sealant. When removing valve
cover, use care not to damage gasket surfaces
of cover and cylinder head. To break RTV seal,
hold block of wood against 1 fl at surface of valve
cover. Strike wood fi rnly with mallet. If seal
doesn't break loose after 1 or 2 attempts, repeat
procedure on other side.
1. Remove screws and remove valve cover from
engine. Breather assembly is inside valve cover.
2. Using a brass wire brush and gasket remover or
similar solvent, clean old RTV from surface of
cylinder head and valve cover.
3. Remove screws securing cylinder shroud and
remove cylinder shroud.
4. Loosen and remove rocker arm lock nuts and
adjuster nuts. Remove rocker arms and push rods.
5. Remove spark plug.
6. Remove screws securing cylinder head.
7. Remove cylinder head, dowel pins, and cylinder
head gasket.
Remove Valves
NOTE: Mark location of any part removed that will be
reused.
1. Supporting head of valve from below, depress valve
keeper and valve spring until keeper can be
released from valve stem. Remove valve spring and
valve from head. Repeat this procedure for
remaining valve.
2. Remove and replace intake valve stem seal
whenever cylinder head is serviced or disassembled.
