Kohler K91 Service Manual page 118

The following sequence is suggested for complete
engine reassembly. This procedure assumes that
all components are new or have been recondi­
tioned , and all component subassembly work has
been completed. This procedure may have to be
varied slightly to accommodate options or special
equipment .
NOT E : Make sure the engine is assembled using
all specified torque values , tightening sequences ,
and clearances . Failure to observe specifications
could cause severe engine wear or damage .
Always use new gaskets .
1 . I nstall rear bearing.
2. I nstall governor gear and cross shaft .
3 . Install tappets and camshaft .
4 . Install balance gears .
5 . Install crankshaft .
6 . Install front bearing .
7 . Install fuel line and wiring harness .
8 . Install bearing plate.
9. Install oil seals.
1 0 . Install piston rings
1 1 . Install piston to connect ing rod .
1 2 . Install piston/connecting rod .
1 3 . I nstall oil pan .
1 4 . I nstall valves .
1 5 . Install stator.
1 6 . Install flywheel , grass screen , and drive cup or
rope start pulley.
1 7 . Install blower housing .
1 8 . Instal l cylinder head and spark plug .
1 9 . I nstall breather assembly .
2 0 . Install side air baffles and cylinder head baffle.
2 1 . Install d ipstick .
2 2 . Install fuel tank.
23 . I nstall electric starter.
24. Install retractable starter .
2 5 . Install f u e l p u m p .
2 6 . Install external governor components and
throttle controls.
2 7 . I nstall carburetor and throttle linkage .
2 8 . Install m uffler.
29. Install air cleaner .
SECTION 1 2
REASSEM BLY
I NSTALL REAR BEARING
1 . Install the rear bearing into crankcase using
the #4747 handle and appropriate bearing in­
staller. (Refer to the " Special Tools " section ) .
Make sure the bearing is bottomed fully, and
is straight and true i n bore . Refer to Figure
1 2-1 . Install the rear main bearing by pressing
it into cylinder block. If using a shielded type
bearing , install with shielded side facing toward
inside of block.
I N STALL GOVERNOR G EAR AND CROSS
S HAFT
1 . Slide cross shaft into place from inside of
block .
2 . Place speed control disc o n governor bushing
nut and thread bushing nut into block. On ear­
lier models, the cross shaft has an extension
riveted in place to line up with governor gear.
Torque bushing nut as follows :
K9 1
K 1 61 , K1 81
K24 1 , K30 1 , K32 1 , K341
3 . I nstall the thrust washer, governor gear, cop­
per washer, and stop pin. Refer to Figures
1 2-2 and 1 2-3 .
Rear Bearing ... .. ..
Figu re 1 2-1 . I nstalling Rear Bear i n g .
lb.
70/90 i n .
lb.
1 30 / 1 50 in.
lb.
1 00 / 1 2 0 i n .
1 2 . 1