Disassemble Cylinder Heads; Inspection And Service; Valve Details; Exhaust Insert - Kohler Courage SV710 Service Manual

Disassembly/Inspection and Service
2. Mark location of push rods as either intake or
exhaust and cylinder 1 or 2. Push rods should
always be installed in same positions.
3. Remove screws securing each cylinder head.
Discard screws once removed. Do not reuse.
4. Remove cylinder head and head gasket.

Disassemble Cylinder Heads

NOTE: On engines with valve stem seals on intake
valves; use a new seal whenever valve is
removed or if seal is deteriorated or damaged.
Never reuse an old seal.
1. Remove adjusters, pivots, rocker arms, studs, and
guide plate with adjusters from cylinder head.

Inspection and Service

Valve Details

E
G
H
Exhaust Valve
Dimension
A Seat Angle
B Insert O.D.
C Guide Depth
D Guide I.D.
E Valve Head Diameter
F Valve Face Angle
G Valve Margin (Min.)
H Valve Stem Diameter
58
F
C
D
D
Intake
89°
36.987/37.013 mm (1.4562/1.4572 in.) 32.987/33.013 mm (1.2987/1.2997 in.)
4 mm (0.1575 in.)
7.038/7.058 mm (0.2771/0.2779 in.)
33.37/33.63 mm (1.3138/1.3240 in.)
45°
1.5 mm (0.0591 in.)
6.982/7.000 mm (0.2749/0.2756 in.)
KohlerEngines.com
2. Compress valve springs using a valve spring
compressor.
3. Once valve spring is compressed, remove following
items.
● Valve spring keepers.
● Valve spring caps.
● Valve springs.
● Valve spring retainers (only used on cylinder heads
without cast in valve spring retainers).
● Intake and exhaust valves (mark position).
● Valve stem seal (intake valve some models).
● Washer (intake valve only used on cylinder heads
with cast in valve spring retainers).
4. Repeat above procedure for other cylinder head. Do
not interchange parts from 1 cylinder head to
another.

Exhaust Insert

F
B
A
A
A
B
Intake Insert
7.038/7.058 mm (0.2771/0.2779 in.)
29.37/29.63 mm (1.1563/1.1665 in.)
6.970/6.988 mm (0.2744/0.2751 in.)
E
G
H
Intake Valve
Exhaust
89°
6.5 mm (0.2559 in.)
45°
1.5 mm (0.0591 in.)
32 690 01 Rev. G