Table of Contents
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1.6
HORSEPOWER
(Maximum RPM)
En ine Model
GENERAL
BALANCE
GEAR
CAMSHAFT
CONNECTING
ROD
Bore x Stroke
Displacement Cu. ln.
Max. Operating RPM
Shalt
0.0.
New
.~axlmum
W&arlimil
End Play
Sleeve
1.0.
Installed
End Play
Small End 1.0. (New)
PTO &
New
Flywheel
Maximum
M End
0.0.
wear li
11
A
R
~~~- ~~~~e~el
I
Max. Taper (Sleeve)
2.375x2.000
8.86
4000
.005/.020
.001/.0025
.003
.0007/.0008
.5630/.5633
.9841/.9844
.9841
2.938x2.500
16.94
3600
.005/.010
.001/.002
.0025
.0006/.0011
.6255/.6258
1.1811/1.1814
1.1811
2.938x2.750
18.64
3600
.005/.010
.001/.002
.0025
.0006/.0011
.6255/.6258
1.1811/1.1814
1.1811
3.251x2.875
23.85
3600
.4998/.5001
.4996
.002/.010
.005/.010
.001/.002
.0025
.0003/.0008
.8596/.8599
1.5745/1.5749
1.5745
3.375x3.250
29.07
3600
.4998/.5001
.4996
.002/.010
.005/.010
.001/.002
.0025
.0003/.0008
.8757/.8760
1.5745/1.5749
1.5745
3.500x3.250
31.27
3600
.4998/.5001
.4996
.002/.010
.005/.010
.001/.002
.0025
.0003/.0008
.8757/.8760
1.5745/1.5749
1.5745
3. 750x3.250
35.90
3600
.4998/.5001
.4996
.002/.010
.005/.010
.001/.002
.0025
.0003/.0008
.8757/.8760
1.5745/1.5749
1.5745
N Running
Ma~~r:,um
_
_
_
_
_
_
S Clearance
f----'l~<L-...f--.....:::_--jf--.........:=--+-=--t-.....:::_--jf--.........:=--+-=--t--==-----1
CRANKSHAFT
-(Sieevef
wear limit ro
CYLINDER
BORE
CYLINDER HD.
IGNITION
cv-•
=z--,:;;.
0
./
--""
PISTON
®:..:~.~~
PISTON
New
Ste
1
~v~a'l~~ring
I.D.
c
New
.9360/.9355
1.186011.1855
1.186011.1855
1.5000/1.4995
1.500011.4995
1.500011.4995
1.500011.4995
:f---M-a_x __
~w~e~ar_L_im-il-~~.~93~5~0~~~1.~18~5~0~+--1~.1-8-50~-r-1~.4-99-0~~-1.-49_9_0_+--1-.4-9-90--r-1-.4-9-90-~
~~-~M=ax~.~O~u~l~of~R~o~u~nd-~.........:_~oo=0~5-+~.o~o=o5~-t-~.o~oo~5=--~.........:.~oo~o=5.........:+~.o~o=o5~-t-~.0~00~5:_~.........:~.o~oo=5.........:~
ff--~~~~~~~.........:~:_-t-~~-t--~=---j--~~--jL_~~-~~~-t-~~--~
N
Max. Taper
.001
.001
.001
.001
.001
.001
.001
End Play
.004/.023
.002/.023
.002/.023
.003/.020
.003/.020
.003/.020
.003/.020
Max. Oul ol Round
Max. Taper
Max. Oul of Flatness
Spark
Plug
T~e
Gap
Type®
BaHery
Magneto
Gaseous
Fuel:
Nominal Point Gap
Service Replacement Sizes
2.3755/2.3745 2.9380/2.9370 2.9380/2.9370 3.251513.2505 3.375513.3745 3.5005/3.4995 3.7505/3.7495
2.378
2.941
2.941
3.254
3.378
3.503
3.753
.003
.003
.003
.003
.003
.003
.003
.003
.003
.003
.002
.002
.002
.002
.003
.003
.003
.003
.003
.003
.003
RCJ-8
RCJ-8
RCJ-8
RH-10
RH-10
RH-10
RH-10
.025
.025
.025
.035
.035
.035
.035
.025
.025
.025
.025
.025
.025
.025
.018
.018
.018
.018
.018
.018
.018
.020
.020
.020
.020
.020
.020
.020
.003 - .010 - .020 - .030
Thrust Face
f--="cc:ew=---11--"2~.3~71:...:/2:...:.3~6~9 -+=2~.9.::c29:..:.7..::/2.:.:.9.::c28:..:1+='2.-"92:.:9.:c7/.::c2
·..:c92:.:8c..1
+'3:...:.2:.:4..:c32:...:/3:...:.2:.:4:...:13+"'3.-=-36~8-=/3.:.:.3..:c65
4
-=-3.'-'49:.:4..::1/-=-3.~49:.:2c:.5
+' 3 :..:.. 7:. . . : 42:. : 5. . . : /3:. . . : . 74.:..c1:.:0®
4
o.D.(J)
::::mr~,
Ring
End Gap
New Bore
Used Bore
M '·
Max. Ring Side Clearance
2.366
2.925
.0035/.006
.007/.010
.007/.017
.007/.017
.027
.027
.006
.006
2.925
3.238
3.363
3.491
.007/.010
.007/.010
.007/.010
.007/.010
.007/.017
.010/.020
.010/.020
.010/.020
.027
.030
.030
.030
.006
.006
.006
.006
Service Replacement Sizes
.003- .010- .020- .030
3.738®
.007/.010®
.010/.020
.030
.006
Thrust Face
New
-
-
2.9329/2.9336
-
3.3700/3.3693 3.4945/3.4938 3.7465/3.7455
0.0.®
f--o..;;M;;cc";;'=;m=:'"""n--ll--.........:_=---+---=_=----t.::c=2=.9.::c31=+-~_=---+==3:.:.3...:6.:.:7=-t.::c=3::..4::.92=-=+=-"3.::_74:..:.4:....:.:.
4
~~~~:C~".'':.t&~
-
-
.0034/.0051
-
.0045/.0062
.0050/.0067
.0030/.0050
~
Ring
hNr.:e;:;;w"Bo;:;re;;o":--tt-----+------t---·0_1_0i_.0_23_t-----+-·-01..,0.,..i.0:--2_0-t-·0_1_0i_.0_20_+-_.0_10,...i.-:-02_0--l
®-}raJJ
"""' ! :
End Gap
Use~::""
_
_
.032
_
.030
.030
.030
Max. Ring Side Clearance
_
_
.006
_
.006
.006
.006
PISTON PIN
Outside Diameter
.5623/.5625
.62471.6249
.62471.6249
.8591/.8593
.8752/.8754
.8752/.8754
.8752/.8754
Guide Reamer Size
.250
.3125
.3125
.3125
.3125
.3125
.3125
c!appet
f--~'"=ak=e--~~·0:.:05:...:/.=00~9--j.........:·=00~6~/.0:.:0:::8-+~·0:.:0::.6/~.0=08:_~~-U=08~/.::.01...:0--j~·::.00~8~/.0~1::.0-+~·0:.:0::.8/~.0~10:_~·=00:.:8/~.0~1=0®~
··r~~f~ce
Exhaus•
.0111.o15
.o17I.019
.o17I.019
.o111.o19
.o17I.019
.o17I.019
.o111.o19
MiTmum
f----'"'_ak_e __
~--~-2"'o3~5---+-~·.::c27~1=8---t--~·2:..:.7:...:18~-tc--~·3:..:.1~8--+---=·3_18~-t--~·c:.31~8---+--~·3~1=8--~
(Zero Lash)
E•haust
.1768
.2482
.2482
.318
.318
.318
.318
VALVES
Minimum
Intake
.2478
.3103
.3103
.3103
.3103
.3103
.3103
Valve Stem
r------+---~r----~-------t-----r-------t-----t------i
0.0.
Exhaust
.2458
.3088
.3088
.3074
.3074
.3074
.3074
Nominal Angle Valve Seat
45'
45'
45'
45'
45'
45'
45'
Guide
1.0.
Intake
.005
005
005
006
006
006
006
w~::l~~Wmlf---Ex-h-
. . -..
---+--~.o=o"'7---+----":o~o7~~---:...:oo~7---+---:o~o...:8
__
-r--~:o...:oa--~--_...::o"'o8~-t---:=oo~8--~
CD Maximum limits combination of 1.0. and
0.0. measurements
®Ball bearing 1.3779/1.3784, Maximum Wear 1.3779
(])Ball bearing 1.7716/1.7721, Maximum Wear 1.7716
• Includes
K141
®
Pre Series II 1.3733/1.3738, Maximum Wear 1.3728
®
BaH bearing .002/.023
®
Champion spark plugs or equivalent
(J)
Measure just below oil ring groove and
at right angles to piston pin
®
1800 RPM generator sets .005/.007
®
Measure W' above the bottom
of the piston skirt.
~
Top and center compression rings.
Figure 1-5. Engine Specifications And Tolerances.
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