Kohler K91 Service Manual page 8

HORSEPOWER (Maximum RPM)
En ine Model
GENERAL
BALANCE
GEAR
CAMSHAFT
CONNECTING
ROD
M
A
I
N
S
CRANKSHAFT
CYLINDER
BORE
IGNITION
PISTON
Mal, iling Side Clearance
VALVES
(j)
Mru:: i mum limits combination of
0.0.
measurements
�
Ball boaring 1.377911,3784, Maximum Wear 1.3779
Q>
8all bearing 1.7716/1.7721. Maximum Wear 1.7716
•
Includes K141
1 . 6
Bore x Slroke
Displacement Cu. In.
Max. Op�
New
Shall
0.0,
Maximum
i
rl-
End Play
1.0.
Sleeve Installed
Play
.0051.020
Red To Crank.-
Pin '6 .001/,0025
Rod To traIt-
Running
rLimit .003
Clearance Pi
Rod To Plslon
.
.00071.0008
Pin
, 56301.5633
New
I 1.181111.1814
.98411.9844
.9841
Maximum
.93601,9355
.9350
.0005
.001
.004/.023
Ne.
2.375512.3745 2.9380/2,9370
Inside
m
Maximum
Dlameler
l
2.378
i i
Max. Oul 01 Round
.003
Max. Tall � r,
.003
Max. Dul 01 Aatness
.003
fl
Type@
RCJ·8
S ark y
B
l lug e
a .025
tt r
e
TY
Magneto"
.025
Gap
"I
.018
Nominal Point Gap
.020
2,371/2,369
2.366
.0035/.006
.0071.017
.027
.006
New8ore@
Use; flore@)
Oulside Diameter
.56231,5625
.250
Inlake
.0051.009
Exhaltst
.0111.015
Iq,te
.2035
.1768
1.-
.2478
EJbaust
.2458
Seat
Valve
45'
lilI ...
.005
Elhallst
.007
tD. @ Pre
Serles 111,3733/1.3738, Maximum Wear 1.3728
and
@
BaH bearing .002/,023
®
Champion spark plugs or equivalent
([)
Measure just below oil ring groove and
at right angles to piston pin
Figure 1 -5 . E n g i n e Specificatio n s And Tolera nces.
,0051.010 .005/,010
.0051,010
,001/.002 ,001/.002 .001/,002
.0025 .0025 ,0025
.0006/,0011 ,00031.0008
,0006/.0011
,8596/.8599
,62551.6258 .62551.6258
1.181111.1814 1.574511.5749
1.1811 1.1811 1.5745
1.5001)1 1 .4995
.0021.023
2,941 2,941
.003 .003
,003 .003 .002
.003 .003 .003
RCJ·8 RCJ·8 RH·l0
.025 .035
.025
.025 .025 .025
.018 .018 .018
.020 .020 .020
3.243213.2413
3.236
.0071.010
.0101.020
.030
.006
3,370013,3693
2.931
.00341.0051
.010/.023
.032
.006
.62471.6249 .62471.6249 .8591/.8593
.3125 .3125 .3125
.00til.OOO .00til.oOS .b08I.010
.017/.019
.Om.019 .0171.019
.2718 .2710 .318
.2482 .2482 .318
.3103 .3103 .3103
.3088
.3088 .3074
45' 45' 45"
.005 .005 .006
.007 .008
.007
®
®
®I
.0051.010 .0051.010 .0051.010
.0011.002 .0011.002 .0011.002
.0025
.0025 .0025
,00031,0008 .00031,0008 .00031,0008
.87571,8760 ,87571,8760 .87571.8760
1.5745/1.5749 1.574511.5749 1.574511.S749
1.5145 1.5145 1.5745
3.753
3.378 3.503
.003 .003 .003
.002 .002 .002
.003 .003 .003
RH·l0 RH·l0
.035
.025
.018
3.36813.355
3.363
.0071.010
.010{,020
.030
3.367
.0045/.0062 .0050/.0067 .00301.0050
.0101.020 .0101.020 .0101.020
.030 .030 .030
.006 .006
.006
.87521.8754 .8752/.8754 .87521.8754
.3125 ,3125 .3125
•
.008/.010 .0001.010 -----r- -- - -- .008l.010®
.0171.019 .0171.019 .0171.019
.318
.318
.3103
.307 4
45' 45 ' 45'
.006 .006 .006
.008 .000
RPM
1800 generator sets .005!.O07
1f,z"
Measure above the bottom
of the piston skitt.
Top and center compression rings.