Kohler K91 Service Manual page 128

SLEEVE BEARING
( TYPICAL)
PRESS SEAL
AGAINST
SHOULDER
I N STALL OIL S EALS
1 . Slide the appropriate seal sleeves over the
crankshaft (refer to the " Special Tools " sec­
tion ) . Generously lubricate the lips of the oils
seals with light g rease . Slide the oil seals over
the sleeves . Refer to Figure 1 2-33 .
2 . Use the # 1 1 795 handle and appropriate seal
drivers to install the front oil seals to the fol­
lowing depths :
Note that the front oil seal depth varies with en­
gine model and type of bearing plate used-bearing
plate configu ration differs with type of ignition sys­
tem used-these d ifferences are shown in the cut­
away views in Figure 1 2-33 to help identify the
various bearing plate types . Rear oil seal installa­
tion details are shown in Figure 1 2-34 .
INSTALL PI STO N RING
NOTE : For detailed piston inspection and piston
ring instal lation proced ures , refer to the " Inspec­
tion And Repair/Reconditioning " section .
INSTALL P I STON TO CONN ECTING ROD
Style "A" P isto n
1 . I nstall wrist pin and retainers .
" 0"
Style "C" And Pistons
NOTE : Proper orientation of the piston to the con­
necting rod is extremely important. I m proper orien­
tation may cause extensive wear or damage .
FLYWHEEL MAGNETO BREAKERLESS
(TYPICAL)
- 8--i- --i- - S EAL
DEPTH
Fig ure 1 2-34. Front Oil Seal Location.
1 .
2 .
I NSTALL PI STON/CON NECTING ROD
NOTE : Proper orientation of the piston to the con­
necting rod is extremely important . Improper orien­
tation may cause extensive wear or damage.
1 .
2 .
(TYPICAL )
DEPTH
Orient piston and con necting rod so that the
notch (Style " C " piston) or Fly symbol (Style
" 0 " piston) on piston and the match mark on
connecting rod are facing the same direction .
Install wrist pin and retain ers . Refer to Figure
1 2-35 .
Figure 1 2-35. I nsta l l i n g Piston T o Connecting
Rod (Style
Stagger the piston rings in their grooves until
end gaps are 1 20 0 apart .
Lubricate the piston and rings with engine oil .
I nstall the piston ring compressor around pis­
ton . Refer to Figure 1 2-36.
BATTERY
(TYPICAL)
SEAL
-
" 0"
Piston Shown ) .
1 2 . 1 1