Cylinder Head Components; Remove Valve Covers; Remove Spark Plugs; Remove Cylinder Heads - Kohler Command Pro ECV850 Service Manual

Cylinder Head Components

A
C
F
E
D
B
A J-Clip
E Rocker Arm Pivot
Valve Spring
I
Keepers
M Spark Plug

Remove Valve Covers

1. Remove screw securing each valve cover. Note location of J-Clip on each valve cover for reassembly.
2. Remove valve cover and gasket from each cylinder head. Note valve cover differences for proper location in
reassembly.

Remove Spark Plugs

Remove both spark plugs from each cylinder head.

Remove Cylinder Heads

NOTE: Cylinder head number is embossed on outside of each cylinder head.
1. Loosen set screws and rocker arm pivots for each rocker arm enough to remove push rods.
2. Mark position of push rods as either intake or exhaust and cylinder #1 or #2. Push rods should always be
reinstalled in same positions.
3. Remove screws securing cylinder head.
4. Carefully remove cylinder head and head gasket.
5. Repeat procedure for other cylinder head.
Disassemble Cylinder Heads
NOTE: These engines use valve stem seals on intake and exhaust valves. Use a new seal whenever valves are
removed, or if seal is deteriorated in any way. Never reuse an old seal.
1. Remove set screws, rocker arm pivots, rocker arms, and push rods from cylinder head. Remove pivot studs and
guide plate as required.
2. Compress valve springs using a valve spring compressor.
19 690 01 Rev. --
M
K
I
H
L
J
G
M
B Valve Cover
F Rocker Arm
Valve Spring
J
Cap
N Head Gasket
KohlerEngines.com
Disassembly/Inspection and Service
N
O
P
M
C Gasket
G Rocker Arm Stud
K Valve Spring
O Valve
N
M
C
B
D Set Screw
Push Rod
H
Guide Plate
L Valve Stem Seal
P Push Rod
77