Kohler MAGNUM M18

SECTION 11
REASSEMBLY
a к
Insert Flat Feeler Gauge к
Between Valve Stem And Tappet
pose SN W
Intake Valve г Exhaust Valve
Cylinder Barrel
Valve Spring ARES Valve Springs
Compressor à
Keepers
Figure 11-32. Measuring Valve-to-Tappet Clearance.
Clearance Specifications -
Intake Valve
(Closest to Flywheel) -003”/.006”
Exhaust Valve (Seat Angle)
(Closest to PTO) 45° -016"/.019"
30?* .011"/014"
*Serlal No. 1816500646 and later.
3. Rotate the crankshaft 360° and measure the
valve-to-tappet clearance for the remaining
cylinder.
4, If the clearance is insufficient, grind the valve
stems until the correct clearance is obtained.
Make sure the valve stems are ground perfectly
flat and smoath.
If the clearance is excessive, replace the valves
and recheck clearance.
INSTALL VALVES
1. Install the intake valve seals to valve guides.
2. Install the valve springs (close coils towards cylin-
der head surface), exhaust valve rotators, lower
intake valve spring retainers, and valves.
3. Compress the springs using a valve spring com-
pressor and install keepers. Refer to
Figure 11-33.
11.12
Figure 11-33. Installing Valves. Side #2 Shown.
INSTALL CYLINDER
HEADS AND SPARK PLUGS
1. Install gaskets, cylinder heads, plain washers,
and hex. cap screws (lubricate threads with oil).
Torque hex. cap screws in increments in the se-
quence shown in Figure 11-34 to 15/20 ft. Ib.
Figure 11-34. Cylinder Head Fastener
Torque Sequence.
2. Install the spark plugs (0.035" gap); torque to
10/15 ft. Ib.