Kohler K91 Service Manual page 19

Fig ure 3-6. Cleaning Cylinder Head And
Combustion Chamber.
1. Remove the cylinder head baffle and cyl1nder
head .
2 . Clean away combustion deposits using a
wooden or plastic scraper.
3. Reinstall the cylinder head using a new gasket .
Torque the cylinder head fasteners in se­
q uence to the values specified in Figure 3-7 .
CHECK VALV E -TO -TAPPET CLEARANCE
Every 500 operating hours, remove breather/valve
cover and check valve-to-tappet clearance with a
flat feeler gauge . Refer to Figure 3-8 . The engine
must be cold when checking t his clearance .
1. Remove the air cleaner assembly, carburetor,
and breather assembly . ( Refer to appropriate
.. Disassembly " section . )
2 . Position the crankshaft so the piston is at top
of com pression stroke (cam has no effect on
tappets) .
Figure 3-8. Measuring Valve-To-Tappet
Clearance.
g
1
K161, K1 8 1
15-20 ft. Ibs.
�
2
8
({) )
7 ({) )
1
CO)
K241,
K301, K321
(Q)
25-30 ft. Ibs.
3
({)) s
K341
({))
25-30 ft. Ibs.
3
y S ({))
2
I ncludes K 1 4 1
*
Figure 3 - 7 . Cyl inder Head Fastener
Tightening Sequence.
1\1
©
4
9
({))
({J)
6